bluuebunny/crossref_metadata_2025 huggingface dataset:
In a manner of speaking
Authors: Corona Luisa , Pietrandrea Paola
Published: November 2021

We provide a functional, corpus-driven definition
of the category of Manner and we observe its (co)-construction in
interactional discourse. In the linguistic literature, Manner has been
traditionally approached as a basic cognitive prime, expressing the
way in which an action is performed. It has been traditionally
considered as a category fulfilling a basically descriptive function,
necessarily realized by a limited inventory of means essentially
encoded either at the lexical level, on verbal roots, or at the
syntactic level, on verbal adjuncts. In this paper, we propose a
functional definition of Manner that allows identifying Manner
constructions without prejudging their morphosyntactic realization. We
present an annotation scheme of Manner constructions that allows for
an exploration of the realizations of this category in a corpus of
spoken interactional data. The analysis of 514 occurrences of Manner
constructions shows that, far from being a static descriptive
monological category, Manner can be regarded as an interactional,
gradable category co-constructed by participants in discourse. Manner
is used by speakers not only to describe reality but also to reach, in
discourse and through discourse, a shared perception of reality.
Clocking the buildup dynamics of light-induced states through attosecond transient absorption spectrum
Authors: Wu Xiaoxia , Zhang Shaofeng , Ye Difa
Published: November 2021

The buildup processes of the light-induced states (LISs) in attosecond transient absorption spectroscopy are studied by solving the time-dependent Schrödinger equation and compared with the quasistatic Floquet theory, revealing a time lag of the maximal shift and strongest absorbance of the LIS with respect to the zero delay that is referred to as the buildup time. We analytically derive a scaling law for the buildup time that confirms the numerical results over a wide range of detunings. Our theory verifies the commonly accepted scenario of nearly instantaneous response of matter to light if the pump field is blue-detuned, but some differences are found in the near-resonant and red-detuning cases. Implications of the buildup time in petahertz optoelectronics are discussed.
On the optical measurement of microparticle charge using quantum dots
Authors: Pustylnik M Y , Marvi Z , Beckers J
Published: November 2021

We investigated the possibility of using a layer of quantum dots (QDs) deposited on the microparticle surface for the measurement of the charge the microparticle acquires when immersed into a plasma. To that end, we performed the calculations of the Stark shift of the photoluminescence spectrum of QDs caused by the fluctuating local electric field. In our calculations, we assumed the plasma-delivered surplus electrons to be distributed on the surface of a microparticle. According to our calculations, the Stark shift will acquire measurable values when the lifetime of the quasi-stationary configuration of the surplus electrons will be determined by their diffusion along the surface. Experiments with flat QD-covered floating plasma-facing surfaces suggest that measurable Stark shift of the photoluminescence spectrum can be achieved. Based on our model, modern microscopic plasma-surface interaction theories and analysis of the experiments, we suggest the possible design of the charge microsensor, which will allow to measure the charge accumulated on its surface by means of visible-light optics.
Controlled growth of silicon particles via plasma pulsing and their application as battery material
Authors: Schwan Joseph , Wagner Brandon , Kim Minseok , Mangolini Lorenzo
Published: November 2021

The use of silicon nanoparticles for lithium-ion batteries requires a precise control over both their average size and their size distribution. Particles larger than the generally accepted critical size of 150 nm fail during lithiation because of excessive swelling, while very small particles (<10 nm) inevitably lead to a poor first cycle coulombic efficiency because of their excessive specific surface area. Both mechanisms induce irreversible capacity losses and are detrimental to the anode functionality. In this manuscript we describe a novel approach for enhanced growth of nanoparticles to ∼20 nm using low-temperature flow-through plasma reactors via pulsing. Pulsing of the RF power leads to a significant increase in the average particle size, all while maintaining the particles well below the critical size for stable operation in a lithium-ion battery anode. A zero-dimensional aerosol plasma model is developed to provide insights into the dynamics of particle agglomeration and growth in the pulsed plasma reactor. The accelerated growth correlates with the shape of the particle size distribution in the afterglow, which is in turn controlled by parameters such as metastable density, gas and electron temperature. The accelerated agglomeration in each afterglow phase is followed by rapid sintering of the agglomerates into single-crystal particles in the following plasma-on phase. This study highlights the potential of non-thermal plasma reactors for the synthesis of functional nanomaterials, while also underscoring the need for better characterization of their fundamental parameters in transient regimes.
Review of soft fluidic actuators: classification and materials modeling analysis
Authors: Pagoli Amir , Chapelle Frédéric , Corrales-Ramon Juan-Antonio , Mezouar Youcef , Lapusta Yuri
Published: November 2021

Soft actuators can be classified into five categories: tendon-driven actuators, electroactive polymers, shape-memory materials, soft fluidic actuators (SFAs), and hybrid actuators. The characteristics and potential challenges of each class are explained at the beginning of this review. Furthermore, recent advances especially focusing on SFAs are illustrated. There are already some impressive SFA designs to be found in the literature, constituting a fundamental basis for design and inspiration. The goal of this review is to address the latest innovative designs for SFAs and their challenges and improvements with respect to previous generations, and to help researchers to select appropriate materials for their application. We suggest seven influential designs: pneumatic artificial muscle, PneuNet, continuum arm, universal granular gripper, origami soft structure, vacuum-actuated muscle-inspired pneumatic, and hydraulically amplified self-healing electrostatic. The hybrid design of SFAs for improved functionality and shape controllability is also considered. Modeling SFAs, based on previous research, can be classified into three main groups: analytical methods, numerical methods, and model-free methods. We demonstrate the latest advances and potential challenges in each category. Regarding the fact that the performance of soft actuators is dependent on material selection, we then focus on the behaviors and mechanical properties of the various types of silicone that can be found in the SFA literature. For a better comparison of the different constitutive models of silicone materials proposed and tested in the literature, ABAQUS software is here employed to generate the engineering and true strain-stress data from the constitutive models, and compare them with standard uniaxial tensile test data based on ASTM412. Although the figures presented show that in a small range of stress–strain data, most of these models can predict the material model acceptably, few of them predict it accurately for large strain-stress values. Sensor technology integrated into SFAs is also being developed, and has the potential to increase controllability and observability by detecting a wide variety of data such as curvature, tactile contacts, produced force, and pressure values.
Characterization of energy dissipative cushions made of Ni–Ti shape memory alloy
Authors: Güllü Ahmet , Danquah Josiah Owusu , Dilibal Savaş
Published: November 2021

Earthquake-resistant design of structures requires dissipating seismic energy by deformations of structural members or additional fuse elements. Owing to its easy-to-produce, plug-and-play, high equivalent damping ratio, and large displacement capacity characteristics, energy dissipative steel cushions (SCs) were found to be an efficient candidate for this purpose. However, similar to other conventional metallic dampers, residual displacement after a strong shaking is the most notable drawback of the SCs. In this work, cushions produced from Ni–Ti shape memory alloy (SMA) are evaluated numerically by experimentally verified finite element models to assess their impact on the performance of earthquake-resistant structures. Furthermore, a reinforced concrete testing frame is retrofitted with energy dissipative steel and Ni–Ti cushions. Performance of the frames (e.g. dissipated energy by the cushions, hysteretic energy to input energy ratio, maximum drift, and residual drift) with different types of cushions are evaluated by nonlinear response history analyses. The numerical results showed that the SCs are effective to reduce peak responses, while Ni–Ti cushions are more favorable to reduce residual drifts and deformations. Hence, a hybrid system, employing the steel and SMA cushions together, is proposed to reach optimal seismic performance.
A study of multi-soliton solutions, breather, lumps, and their interactions for kadomtsev-petviashvili equation with variable time coeffcient using hirota method
Authors: Kumar Sachin , Mohan Brij
Published: November 2021

This paper investigates the new KP equation with variable coefficients of time ‘t’, broadly used to elucidate shallow water waves that arise in plasma physics, marine engineering, ocean physics, nonlinear sciences, and fluid dynamics. In 2020, Wazwaz [1] proposed two extensive KP equations with time-variable coefficients to obtain several soliton solutions and used Painlevé test to verify their integrability. In light of the research described above, we chose one of the integrated KP equations with time-variable coefficients to obtain multiple solitons, rogue waves, breather waves, lumps, and their interaction solutions relating to the suitable choice of time-dependent coefficients. For this KP equation, the multiple solitons and rogue waves up to fourth-order solutions, breather waves, and lump waves along with their interactions are achieved by employing Hirota's method. By taking advantage of Wolfram Mathematica, the time-dependent variable coefficient's effect on the newly established solutions can be observed through the three-dimensional wave profiles, corresponding contour plots. Some newly formed mathematical results and evolutionary dynamical behaviors of wave-wave interactions are shown in this work. The obtained results are often more advantageous for the analysis of shallow water waves in marine engineering, fluid dynamics, and dusty plasma, nonlinear sciences, and this approach has opened up a new way to explain the dynamical structures and properties of complex physical models. This study examines to be applicable in its influence on a wide-ranging class of nonlinear KP equations.
Spatio-temporal warping for myoelectric control: an offline, feasibility study
Authors: Jabbari Milad , Khushaba Rami , Nazarpour Kianoush
Published: November 2021

Objective. The efficacy of an adopted feature extraction method directly affects the classification of the electromyographic (EMG) signals in myoelectric control applications. Most methods attempt to extract the dynamics of the multi-channel EMG signals in the time domain and on a channel-by-channel, or at best pairs of channels, basis. However, considering multi-channel information to build a similarity matrix has not been taken into account. Approach. Combining methods of long and short-term memory (LSTM) and dynamic temporal warping, we developed a new feature, called spatio-temporal warping (STW), for myoelectric signals. This method captures the spatio-temporal relationships of multi-channels EMG signals. Main results. Across four online databases, we show that in terms of average classification error and standard deviation values, the STW feature outperforms traditional features by 5%–17%. In comparison to the more recent deep learning models, e.g. convolutional neural networks (CNNs), STW outperformed by 5%–18%. Also, STW showed enhanced performance when compared to the CNN + LSTM model by 2%–14%. All differences were statistically significant with a large effect size. Significance. This feasibility study provides evidence supporting the hypothesis that the STW feature of the EMG signals can enhance the classification accuracy in an explainable way when compared to recent deep learning methods. Future work includes real-time implementation of the method and testing for prosthesis control.
Kinematic study of a road power generator for the port transport network
Authors: Lyashenko Yu M , Prudii A V , Menshenin S E
Published: November 2021

Nowadays, energy-saving applications are based on alternative energy sources that enable autonomous powering of electrical consumers. Within the port transport network, 62% of freight transport is carried by road. One solution for the alternative generation of electrical energy for lighting and power supply of small power consumers is the use of road electromechanical systems such as artificial road bumps with an electromagnetic generator that converts the energy of vehicle movement into electrical energy. This article deals with a road power generator transducer with a slider-rocker kinematic pair for converting translational motion into rotational motion. The authors conducted a kinematic study of the actuating force transducer and analysed its performance at various connecting rod lengths with the required speed and dimensional criteria. They determined the effect of the connecting rod length on the trajectory and speed of the rocker arm. Analysis has shown that a connecting rod length of 100 and 150 mm, providing a working section with a uniform increase in speed of the rocker arm, satisfies the specified requirements. For further investigation of the electromechanical power system, the researchers adopted a 100 mm long connecting rod, as this allows the unit to be realised with reduced dimensions.
Charging stations for electric cars using hybrid energy storage systems
Authors: Latyshev R N , Abramov E Y , Tolstobrova L I
Published: November 2021

In this article, it is proposed to use energy storage devices as a part of charging stations to reduce the powerful load for the power system during the hours of the greatest energy consumption. This is due to the analysis results for the growth trends of the electric vehicles. By the example of the city Novosibirsk, according to the forecasts of analytical companies about the trend of increasing the number of electric cars (ECs) in Russia, the average energy consumption per day for charging ECs has been calculated. Based on the calculation results, the influence of charging stations on the daily schedule of the active load for the industrial power grid is shown and the capacity lack problem is identified. The experimental measurements results at traction substation No. 29 in Novosibirsk are presented.
Method for synthesis of an intelligent automatic system for diagnosing combustion engine vibration of the power supply system of an unmanned vessel
Authors: Epikhin A I
Published: November 2021

The paper considers the implementation prospects and features of the synthesis of an intelligent automatic system for diagnosing the internal combustion engine vibration of a power supply system in terms of developing technologies for automatic or remote control of unmanned vessels. The paper addresses the issue of predicting the technical condition of a combustion engine using available diagnostic methods. The study focuses on the equipment required for monitoring and analyzing the technical condition of the engine of an unmanned vessel when operating in automatic or remotely controlled mode. An algorithm has been developed for collecting, storing and accumulating data on the condition of the engine components and units in the on-board information system of the vessel to exchange data on the condition of the engine and its components during remote monitoring and to determine fault codes. The approaches to the synthesis of an intelligent automatic system for diagnosing the combustion engine vibration are considered from a methodological point of view. Vibration diagnostics equipment used for the analysis of the technical condition of the engine is proposed. Some results of the classification of the technical condition of the engine are presented. The expediency of introducing and using hybrid intelligent systems based on artificial neural networks is exemplified by diagnostics of the MITSUBISHI S16R engine.
Operation of propeller motors composed of ship electric propulsion systems with semiconductor converters
Authors: Grigoriev A V , Tokarev L N , Makarov D A
Published: November 2021

The calculations of transient processes in ship electric propulsion systems (EPS) with semiconductor converters (SC) show that when the inverter transistors are locked, overvoltage occurs that may break through the insulation of propeller motors (PM). A feature of this overvoltage is its short duration and large value. Pulsed overvoltage of small duration and the EPS value of dozens or more kilovolts may occur in the circuits of the inverter supplying the PM winding. The main cause of overvoltage is the EPS self-induction resulting from rapid current reduction in circuits with inductances, including in motor windings, when the inverter transistors are locked. The paper presents the results of mathematical modeling of the processes arising when the inverter transistors functioning as part of the frequency converter are locked. The results of the analysis confirmed the possibility of overvoltage on the PM winding, which should be taken into account when designing the EPS and selecting equipment.
Algorithm for improving energy efficient wheel motor for electric vehicles
Authors: Kokourov D V , Malozyomov B V
Published: November 2021

In accordance with the tendency to reduce the number of mechanical assemblies in electric driven machines and mechanisms, attempts are made to bring the electric motor and the actuator of the mechanism into a single whole. Thereby increasing the quality and productivity of the machines. A motor-wheel is a kind of a driving wheel, an actuator of a traction electric drive system of a pneumatic-wheeled transport vehicle. The work is devoted to the modernization of urban electric transport by equipping it with high-energy efficiency motor wheels, based on the frequency converter system - asynchronous motor. This paper describes the improvement algorithm and technological features.
Energy-efficient variable frequency asynchronous electric drive
Authors: Vasilyev D A , Gavrilov R I , Panteleeva L A
Published: November 2021

Currently, there are quite a large number of various scientific papers on the creation of a controlled asynchronous engine and the optimization of its modes, and the availability of acceptable results for practical implementation, but there is still no single generally accepted approach to solving the problem. In this regard, the issue of synthesis of scalar control systems that provide the minimum value of one or another criterion of energy efficiency is relevant. In this paper, we consider the obtained mathematical model of an asynchronous engine (AE), which differs from the known ones in that the parameters of the substitution scheme are expressed in terms of the stator and rotor conductivities. The energy characteristics of the AE in the sliding function are obtained, which make it possible to determine the dependences of the active and reactive components of the AE current and the possibility of their redistribution within the nominal value of the AE phase current. The principle of optimal frequency-current control of AE is formulated, which differs from the known ones in that, as an energy efficiency indicator, the value of the maximum energy efficiency of AE is used, expressed as the ratio of the active resistance of the rotor circuit to the total conductivity of the AE phase.
Analyzing vibration parameters of a modern high-speed engine during operation
Authors: Gerasidi V V , Lisachenko A V
Published: November 2021

The paper presents results of experimental research into vibration parameters of a modern electronic control-enabled main high-speed engine, Caterpillar CAT 3516B as obtained during a running trial of a sea tug. CAT 3500 series Caterpillar high-speed engines are extensively used in sea tugs; there are about 40 units installed in vessels operating in the Azov and Black Sea region. The research technique involved measurement of vibration displacement, vibration velocity, vibration acceleration at an engine and its turbocharger components. The conducted experimental research has shown that in order to evaluate the technical state of an engine, it is necessary to measure vibration displacement and vibration velocity in a frequency range from 1 to 1000 Hz at 0.1 Hz intervals. For turbochargers, the vibration acceleration shall be measured in a frequency range from 1 to 15000 Hz at 1 Hz intervals. The results of the experimental research allowed determining necessary conditions for measurement of vibration parameters of Caterpillar CAT-3500 series modern high-speed engines commonly used in sea tugs. The experimental research into vessel installations by in-place diagnostics at operating sea-going vessels forms a foundation of an autonomous ship control system.
Analysis of fuel consumption of modern electronically controlled high-speed marine engines
Authors: Gerasidi V V , Lisachenko A V
Published: November 2021

The paper presents thermal tests of modern electronically controlled high-speed main engines of Caterpillar 3500 series of marine vessels. During the thermotechnical tests, experimental studies were carried out to change the values of the actual fuel consumption depending on the engine load. The number of engines under study installed on sea tugs during 10 years of operation was 80 units. The accumulated experience in conducting experimental studies of the technical condition control by the CIP method of diagnostics will make it possible to move from the classical approaches of technical operation to the new ones included in the system of remote monitoring and control of ship technical means of autonomous ships in operation. The experimental research methodology includes a classic approach to conducting such tests and a modern approach with remote data transmission to the shipowner’s office. Studies have shown that different types of 3500 series engines have different actual fuel consumption values, but for each series, for example, 3512B, the scatter of points is small. The results of experimental studies of Caterpillar 3500 series engines made it possible to construct generalized dependences of the actual fuel consumption for each engine model separately. Experimental studies of ship technical means by the CIP method of diagnostics of sea vessels in operation are the basis for the control system of autonomous ships.
Thermophysical characteristics of gas-power dual-fuel engines w12v50 df for liquefied gas shipping vessels
Authors: Nikolaev N I , Arangulov A S
Published: November 2021

Maritime transport plays important role in the economic development of society – 90% of goods are transported by ships. At the same time, maritime transport requires a significant amount of fuel resources. Production of liquefied natural gas (LNG) is becoming the fastest growing industry in the modern global energy sector. Today, LNG accounts for 40% of the physical volume of world gas trade, and its share will increase up to 60% by 2040. Currently, natural gas is used on ships in the form of liquefied petroleum gas, compressed natural gas, and liquefied natural gas (LNG). The article deals with the urgent problem of operation of dual-fuel diesel-electric installations of ships. The need to study the heat-engineering parameters of two-fuel diesel generators of the Wartsila company has been substantiated. The authors present the dependencies of main heat-engineering parameters on the load of Wartsila W12V50DF dual-fuel engines used as a generator drive in the main electric propulsion engines on LNG tankers. A comparative assessment of the dependencies of exhaust gas temperature, turbocharger rotation speed, boost pressure and gas pressure on the load of diesel generators on two LNG tankers has been carried out. The article analyzes the presented dependencies. The authors substantiate the need for further improvement of their design and workflow.
Study of pneumatic sources of elastic waves for marine seismic exploration
Authors: Kozenkova G L , Talamanov V N , Kozenkov V A , Kondratyev S I , Khekert E V , Modina M A
Published: November 2021

An extensive use of geophysical methods necessitates the development of new methods and improvement of existing methods for seismic exploration to provide reliable data on the structure of the environment in difficult geological conditions. Therefore, it is especially relevant to solve the problems arising in marine petroleum geophysics, which require constant improvement of the methodology and technology of work, and the development and implementation of the advanced seismic equipment. Pneumatic sources that use compressed air as a working medium are among the most effective non-explosive sources for marine seismic exploration. Pneumatic sources exhibit high-energy characteristics, reliability and versatility. Compressor equipment that provide pneumatic sources with high-pressure compressed air is relatively easy to embed into the marine vessel’s power system. The above requires the development and improvement of theoretical methods for studying dynamic problems of a liquid half-space with buried sources of various types. A theoretical description of the formation of an elastic signal in water is given in a number of works. However, the authors of these works do not perform the analysis of gas transportation. The paper considers a number of characteristics of gas flow at a subsonic speed along the high-pressure hose from a vessel’s compressor unit to a pneumatic source. The airflow rate in the receiver-pneumatic source system is determined, and the friction force at a quasi-steady isothermal mode of gas flow is calculated. The paper presents recommendations for planning geophysical works.
Improving the mathematical stability in the numerical simulation of the vehicle movement with an electronic movement control system
Authors: Balakina E V , Sarbaev D S , Sergienko I V
Published: November 2021

The aim of the study is to determine the influence of the calculated radius type on the calculated parameters of the vehicle movement, equipped with an electronic movement control system. A numerical simulation of the vehicle movement equipped with an electronic movement control system was carried out. Under calculated conditions, there are forces that disrupt the stable and controlled vehicle movement. The studies carried out have shown that in the numerical simulation of the parameters of the vehicle movement, the use of a dynamic radius instead of a rolling radius never affects the calculated values of the vehicle’s longitudinal shifts. In this case, the values of the lateral shifts and the turning angle of the vehicle on a dry hard surface change insignificantly, but there is a significant mathematical instability of the solution. On a wet hard surface, the influence of the calculated radii types on the characteristics of the simulated vehicle movement is preserved, but this influence is less pronounced.
Intelligent anti-lock braking system of electric vehicle with the possibility of mixed braking using fuzzy logic
Authors: Umnitsyn A A , Bakhmutov S V
Published: November 2021

This article discusses the work of an intelligent anti-lock braking system (ABS), in which electric machines and friction brakes act as actuators. Combining several actuators at one control object is a difficult task. One of the possible ways to solve it is the use of a control system based on fuzzy logic. The paper compares two tracking algorithms for controlling the actuators of the anti-lock braking system: - slipping control using mixed braking, with a control system based on fuzzy logic; - slipping control by means of braking by one actuator - friction brakes. Research results have shown that the use of mixed braking allows one to increase the performance of this system in various driving conditions.
Artificial intelligence for data collection and application of the probabilistic-logistic method in ship traffic control systems of seaports
Authors: Alekseev A A , Popov V V , Boran-Keshishyan A L
Published: November 2021

An increase in the number of ships, their sizes, speeds and displacement increases the number of accidents, especially in places with intensive shipping. Control over the positions of vessels, their movement, identification of intentions is exercised by the vessel traffic control system (VTCS). A new generation VTCS that can predict optimal and safest traffic patterns in water areas requires artificial intelligence and forecasting elements. Currently, the fifth generation VTCSs are being implemented. They can plan optimal and safe traffic patterns in the water areas, depending on various external factors controlled by artificial intelligence. The VTCS is a traffic control body. Due to the intensive ship traffic, the control over water traffic is becoming more and more urgent. The “probabilistic” model and the target-object can stop moving when the signal is lost, and it is impossible to continue moving along the same route with the same speed. This must be taken into account when using software [4,5]. The knowledge base for developing a logistic-probabilistic method is available, but there is no real application, due to the lack of massive implementation of artificial intelligence in the software.
Method of fragment based tracking of displacement of a large areal object in images
Authors: Lopatina V V
Published: November 2021

Automation of technological processes using computer vision systems necessitates fragment based tracking of the displacement of a large areal object in images. Examples of such processes are monitoring mooring operations, loading and unloading operations, analyzing the environment from the vessel’s bridge, and tracking berthing. These processes are cyclical in the maritime transport industry and thus require methods for automatic data analysis in 24×7 mode. The paper proposes a method of fragment based tracking of the displacement of a large areal object in images in real time. The algorithm that underlies the method enables tracking the object fragment using convolution of pixel matrices and ensures data processing by frequency methods, including computational operations using Fourier images. The developed method is applicable for real-time tracking the object in images, even when it can be hardly distinguished from the background. The method of tracking the displacement of a large areal object proposed in the study can be used in software and hardware meters for longitudinal and vertical displacement, which are used in the maritime transport industry.
Neurocontrol methods in the context of development of technical solutions for transition to unmanned navigation
Authors: Epikhin A I
Published: November 2021

The paper considers the features and prospects of using neurocontrol methods in the context of development of technical solutions for transition to unmanned merchant vessels. The paper suggests a non-iterative training based artificial neural network (ANN), which is based on the principles of “direct inverse control” to control the speed and motion of unmanned surface vessels. The model is identified, and the structure of an artificial neural network and the diagram of the automatic control system (ACS) of an unmanned vessel (UV) are considered on the example of an electric propulsion vessel. A series of computational experiments is carried out to obtain a sufficiently complete training sample. and the control law is presented. The principle of the control system for an unmanned vessel is considered based on a neural network. At the next stage of the study, focus is on the synthesis of the optimal control system for UV navigation. The problem of the fastest motion of a third-order control object from one point (with any initial speed) to another (at the end point the vessel stops and the speed is zero) is considered. Based on the results of a series of experiments with the UV model, the controller parameters that provide the best indicators of control quality were set in the MATLAB Simulink environment.
A method for constructing a small-sized unmanned vessel and its automatic wiring
Authors: Burylin Ya V
Published: November 2021

In the article, the author proposes a method for constructing a small-sized unmanned vessel with a communication system with its operator, receiving data on control actions for the purpose of navigating the vessel in automatic and manual modes along a given trajectory, transmitting the necessary kinematic and navigation data for identifying mathematical models of the movement of sea-surface vessels, setting up the automatic steering in real time, as well as entering proofreading into sensor readings via the data transmission protocol via TCP-IP stack on public Wi-Fi radio frequencies. The method of constructing a small-sized unmanned vessel and its automatic wiring allows us to work out the principles of creating full-scale, fully functional unmanned cargo, passenger and military vessels. It allows you to work out the principles of creating automatic control systems for a given trajectory for fully functional crewed and unmanned vessels for various purposes. This method can be used to study the principles of construction and identification of mathematical models of vessel movement. The method proposed in the article was implemented at the competition “Talent and Success” of the “Sirius” educational center, where it successfully won the championship in the category “Marine Intelligence”.
Implementation of modern approaches to development and testing of advanced driver assistance systems, including driverless systems
Authors: Endachev D V , Bakhmutov S V , Evgrafov V V , Mezentsev N P , Ryazantsev V A , Khorychev A A , Yusupov D T
Published: November 2021

The paper describes FSUE “NAMI” competences in the field of on-board Advanced Driver Assistance Systems (ADAS) and driverless systems for automated vehicle driving. In recent years, FSUE “NAMI” has developed a number of prototype advanced driver assistance systems and vehicle driving automation systems. In order to comprehensively address the control automation tasks, the first SHATL prototype was developed, which was a demonstrator of capabilities of the fully digital control over the vehicle. SUE “NAMI” specialists conduct developments in three primary focus areas of computer vision systems evolution: visual recognition, radar technologies and lidar technologies. In modern technical systems, they are used cumulatively in order to increase the reliability and level of sophistication of computer vision systems, including the redundancy (reservation) principle.
Virtual cargo security model in digital logistics
Authors: Efimenko D B , Zaikin R N
Published: November 2021

The object of research is the security of cargo in case of alteration of vehicle traffic parameters. The necessity of this research is explained by the lack of methodology and practice in applying the data provided by the navigation communication units installed in vehicles. It is proposed to apply the navigation data in the cargo security monitoring. The research theoretical significance lies in the possibility of creating a virtual online model of cargo’s condition during transportation in real time. The research practical significance lies in the possibility of creating a key element in the system of digital logistics designed for analyzing and monitoring supply chains in terms of transportation quality and cargo security. Practical application of the proposed conclusions will provide for improvement of the sphere of cargo transportation monitoring, the sphere of settling losses; it will facilitate speeding up the processes of goods damage assessment and mutual settlement of accounts; it will present valid evidence in litigation.
The choice of rational complex of active safety systems for smart cars
Authors: Markovnina A I , Tsyganov N D , Papunin A V , Makarov V S , Belyakov V V
Published: November 2021

The problem of ensuring road safety affects all elements of the Driver-Car-Road-Environment system. Smart cars equipped with enough traffic assistants can significantly improve road safety. Active vehicle safety systems, including intelligent driver assistance systems and assistants, perform similar road safety functions. With all the variety of possibilities for equipping cars with systems complexes, the need arises to assess the feasibility and profitability of installing a particular complex of systems. For this, it is proposed to apply the methods of multi-criteria assessment. As a result of calculations, the best options for the sets of systems that most widely cover the road situation have been identified.
Principles of building competitive motion control systems for highly automated vehicles
Authors: Saykin A M , Buznikov S E
Published: November 2021

The relevance of the issue of development of efficient motion control systems for highly automated vehicles capable to successfully compete with foreign systems of similar purpose is defined by importance of the issue of creation of competitive high-tech products under modern market economy conditions. The research objective was to scientifically justify the building principles for motion control systems for highly automated vehicles providing directed search for solution options for the issue of multi-criterion optimization in the software and hardware space. The research involved methods of system analysis and modern control theory. The research result is a set or complex of building principles for motion control systems for highly automated vehicles providing minimization of hardware environment while keeping observability of all vehicle state coordinates significant for safe control and their dynamic boundaries, as well as ensuring controllability via the channels of traction, braking and direction. The conceptual core or base of such integrated intelligent control systems is mathematical and programming support (software) of indirect measurements of the parameters of motion and control of traction, brakes and direction adapting to the vehicle state and environment changes.
A steering control system for the tractor – semi-trailer combination vehicle with the electromechanical transmission
Authors: Chudakov O I , Gorelov V A , Gartfelder V A
Published: November 2021

The article offers an algorithm for the operation of the steering and active drive control system of a saddle-type tractor – trailer combination. The algorithm allows reducing the width of the cornering corridor when maneuvering at low speeds. In the combination vehicle under study, all the wheels of the tractor and semi-trailer are driving and steered. The algorithm of the steering control system takes into account the current values of the folding angle and speed of the combination vehicle. The active drive control is based on the analysis of the forces in the coupling device. The efficiency and effectiveness of the proposed algorithm has been proved using computational experiments.
Hardware in the loop simulation technology evaluation method for power steering systems
Authors: Potashov I S , Bokarev A I
Published: November 2021

In the paper, the method of measuring and assessing of steering systems with the help of test benches with HILS technology implementation is justified in part of the adaptive algorithms of the regulation of the assistant steering torque. In the article, overall principal of creating virtual – physical system using as a physical part the rack and pinion steering system with electromechanical assistant is described. Interaction of the physical and virtual parts and fields of usage are described. Development, calibration and tweaking of the newly designed ECU and adaptive algorithms suppose a lot of testing. Time consumption and difficultness can be reduced only by the way of carrying out bench tests with usage of HILS technology.
Design of Commodity Settlement System Based on Deep Learning
Authors: Liu Mouli
Published: November 2021

In order to solve the problem that the salesmen need to scan the bar code of commodity price one by one in supermarket settlement system, a commodity settlement system is proposed. The system hardware includes smart phone, PC and LCD. The image information is obtained after the smart phone scans goods, then the acquired image is uploaded to the upper computer, which identifies commodity and obtains the unit price of goods through the image, finally, the payment QR code is displayed on the LCD screen. Without scanning the cods again at the checkout counter, the payment could be accomplished in a manner that saved time and manpower cost.
Personalized Clothing Design Support System for Special Crowds Based on Artificial Intelligence Technology
Authors: Hu Yuli
Published: November 2021

In today’s society, people’s demand for personalized clothing is increasing, and they are increasingly pursuing traditional elements. Therefore, many fashion designers will incorporate folk elements into the traditional clothing design concepts to meet this demand. Sc a kind of computer technology Personalized auxiliary design software is produced. The function of this software is to use the MVC architecture to create system function modules, and then use the Kinect-based three-dimensional scanning system to model the human body, so as to clearly understand and obtain human body models with different characteristics. Take the folk art elements of opera as an example, integrate the opera elements into the costume design and save it in the database of the system. Under the action of the virtual algorithm, the personalized costume is matched with the human body model, which completes the costume design. Personalized design, and better design results can be obtained through this auxiliary design software.
IT Audit of Cloud Accounting Platform Based on Big Data
Authors: Liu Kangying
Published: November 2021

So far, the level of science and technology in China has experienced unprecedented development, at the same time, the computer level of our country has improved significantly. At present, more and more Big data technologies are gradually entering the field of vision of people, in most industries of our country they are dedicated to the research and application of big data technology. Big data, these can provide people with more and more reliable information.At the same time, it also brings great convenience to people’s daily life and brings creativity to enterprises.With the development of the times and the progress of science and technology, the application of modern computer technology can achieve the digitization of information technology audit. That is, the audit project data ion of digital IT are kept and stored according to actual needs. According to the relationship between different electronic documents, link and combine them to improve the efficiency of IT audit and minimize audit costs. In recent years, Our country’s informatization process has become deeper and deeper, which has brought great convenience to all walks of life. In traditional IT auditing, it has been unable to meet the current development needs. This requires redesigning IT auditing thinking, establishing a new framework, and creating digital IT auditing to meet the needs of the times and improve IT auditing efficiency. In this article, we will study all kinds of data in the digital IT audit project, and we will discuss the application audit of the cloud-based computing platform.Big Data, mainly the audit of cloud computing platform data, and whether it is effective in the input, processing and output process, in order to achieve the effect of high speed and high quality.Finally, summarize the research results.The efficiency of IT verification has improved significantly.
Multi-Degree-of-Freedom Manipulator Joint Trajectory Tracking Control Method Based on Decision Tree
Authors: Gao Gangyi , Ou Cuixia , Shi Linian
Published: November 2021

For industrial-grade manipulators, the study of trajectory tracking control issues provides an important guarantee for accurate and safe work. Therefore, the trajectory control input driving torque can meet the requirements of the robot arm to accurately track a given target trajectory, and the process of building a decision tree is a process of dividing the feature space. For a given training data set, a set of if-then is summarized the rule of. Based on this, this paper launches the research of multi-degree-of-freedom manipulator joint trajectory tracking control method based on decision tree. Based on the established kinematics and dynamics model of the manipulator, this paper uses a proportional-integral-derivative (PID) sliding mode controller based on the sliding mode surface of the manipulator to perform the trajectory tracking control of the end of the manipulator, and the simulation results of the improved sliding mode control are compared with the simulation results of the improved sliding mode control. The simulation results of the PID controller and the traditional sliding mode controller are compared. This paper finally verifies the effectiveness of the proposed new sliding mode controller based on the expanded state observer through the experimental platform. The speed and chattering problems of the trajectory tracking at the end of the manipulator are better than those of the controller on the experimental platform. Finally, this paper adopts the sliding mode variable structure control strategy combining the double-power reaching law and the improved terminal sliding mode surface to study the trajectory tracking control of the planar two-degree-of-freedom manipulator.
Research and Design of Java Timing Processing Method
Authors: He Weiwen
Published: November 2021

There are differences among programming languages. In contrast to C/C++ in Linux, standard Java timer has some issues, such as uncontrollable execution order, unpredictable start moment and running duration, when it’s applied to handle dense timing tasks. So it could not be directly used by some military applications with strict requirements on time sequence. In this paper, its root cause is analyzed, and then an improved method based on queue and delay feedback is presented, as well as its implementation flow chart. The test results show that, this method is able to not only ensure the correct execution order, but also reduce the uncontrollable delay. So it could satisfy the time sequence demand of military applications.