bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rolling active load relief technology for launch vehicle bundled with common booster core in face
Authors: He Mianchao , Liu Yuxi , Zhang Zhiping , Sheng Yinghua 
Published: May 2024

Abstract
The aerodynamic interference forces and moments of different windward surfaces of a launch vehicle bundled with a common booster core in the face vary considerably. The servo mechanism is laid out to maximize the control capability of the rocket at a certain angle. The dominant surface of the rocket is determined by aerodynamic interference and control capability. For the problem of large interference and asymmetry during the flight of a nominal rocket, a rolling active load relief control law based on the optimization of the spatial interference vector is proposed. The direction with the largest spatial interference vector is obtained online by visual acceleration information. By adjusting the rolling program angle, the rocket will align the dominant face with the direction of the largest interference when flying through the windy area. And then, the rocket obtains a good control effect. The simulation results show that the control law proposed in this paper can effectively improve the adaptability of the rocket control in the case of sudden changes in wind direction. It achieves the purpose of reducing the static load of the rocket body structure during the flight.
Research on fault-tolerant control methods for Bi-rotor vehicles under actuator failure
Authors: Sun Xue , Wang Donghui , Zhan Zhengyong , Cui Yuwei 
Published: May 2024

Abstract
A PID-self-impedance fault-tolerant controller based on the inner and outer loop structure is developed for a new form of bi-rotor vehicle, taking into account the fault-tolerant control problem when the actuator fails. First, the dynamics model and actuator fault model of the bi-rotor vehicle are established, the PID active fault-tolerant controller with control parameter switching is selected for the outer loop, and the self-immune controller is selected for the inner loop. Second, when a fault occurs, the outer loop PID controller’s settings are switched to the controller parameters of the relevant fault state based on the extent of the fault, and the parameters are matched with the robust controller of the inner loop to achieve fault-tolerant control. Finally, simulation experiments show that the designed fault-tolerant controller can still achieve stable tracking of position and attitude in the presence of actuator faults. This indicates that the flight control system is robust to fault-induced disturbances and effectively improves the vehicle’s fault-tolerant performance.
Trajectory planning and control strategy optimization design of double electric cylinder erecting device
Authors: Liu Dong , Zong Xiaorui , Zhao Yu , Jiang Zhen , Cheng Dong 
Published: May 2024

Abstract
The transition of the rocket from a horizontal to an erect state before its launch on the offshore platform is a crucial stage. Compared with erecting the rocket on the ground, higher servo control and synchronization accuracy are required for erecting it on the offshore platform. Most rocket erecting devices on offshore platforms rely on hydraulic drive systems, posing challenges due to their lower servo control accuracy and difficulties in achieving high-precision synchronization. The erecting process, trajectory planning, control system, and control strategies of rockets driven by a double electric cylinder erecting device are studied, aiming at the requirement of erecting rocket devices on offshore platforms. This paper commences by establishing the kinematic model of erecting the rocket with a double electric cylinder erecting device. It delves into the process and trajectory of the erection rocket with a double electric cylinder erecting device. Subsequently, the focus shifts toward designing the control system, while inclination and angular velocity sensors monitor the erection process. Finally, designing and demonstrating control strategies for a double electric cylinder erecting device, three different control strategies, master control, master-slave control, and cross-coupling control, are analyzed, and the cross-coupling control strategy is selected as the control strategy of the double electric cylinder offshore platform rocket erecting device.
Research on the cabin pressure control system based on the gray wolf fuzzy PID algorithm
Authors: Wang Shun , Meng Fanxing , Yang Yonghui , Yang Changbao 
Published: May 2024

Abstract
The cabin pressure control system is typically nonaffine-nonlinear time-varying system. In this paper, the fuzzy PID control method optimized by gray wolf algorithm is proposed to solve the problems of large overshoot and long adjustment times in traditional control methods. Simulation results show that the fuzzy PID control method optimized by gray wolf algorithm proposed in this paper improves the dynamic characteristics of the system, reduces cabin pressure error and adjustment time, stabilizes the control process, and improves the comfortableness of passengers.
A Method for micro-vibration test analysis of small satellites with laser loading
Authors: Zhang Yousheng 
Published: May 2024

Abstract
Based on the parameters of the structure configuration and equipment layout of a small laser satellite in the design stage, the in-orbit micro-vibration simulation analysis of the satellite is carried out by finite element method, which mainly includes [1-2]: 1) modal analysis obtaining the main vibration frequency and modal shape of the satellite in orbit; 2) micro-vibration analysis of the satellite in orbit with the micro-vibration disturbance of the moment gyroscope as the excitation condition. Through the in-orbit micro-vibration simulation analysis of the satellite, we can obtain the vibration transmission relationship from the moment gyroscope to the laser communication load and the micro-vibration state of the laser communication load.
Analysis and study of maximum allowable turning speed for civil aircraft
Authors: Feng Kai , Pan Lijun , Zhao Da , Jin Ding 
Published: May 2024

Abstract
The maximum allowable turning speed of an aircraft is a critical factor affecting the safety of civil aviation. Evaluating the maximum permissible taxiing turn speed for civil aircraft is an essential aspect of aircraft design. To ensure that the aircraft does not experience unbalanced forces leading to a lateral rollover due to excessive taxiing speed, an engineering estimation method is employed to study the maximum permissible taxiing turn speed for civil aircraft. This method begins with certain assumptions and calculation scenarios, followed by the derivation of a calculation model based on the analysis of aircraft forces. Lastly, a case study of a specific aircraft’s maximum taxiing turn speed is conducted in conjunction with practical engineering considerations. The study reveals that as crosswind forces on civil aircraft increase, the maximum turning speed decreases. Moreover, for lighter aircraft with a forward center of gravity, the risk of lateral rollovers is higher. These findings underscore the engineering applicability of the estimation method.
Predefined-time prescribed performance guidance law design against maneuvering target under input saturation
Authors: Wei Zhenyan , Li Jianfeng , You Weishuai , Song Shenmin , Shi Xiaoping 
Published: May 2024

Abstract
A novel SMC-based prescribed performance guidance law combined with a base generator (TBG) is proposed. A TBG-based modified Lyapunov function is first proposed, which ensures that the LOS tracking error converges into zero within a predefined time. A novel sliding manifold with adjusting convergent time property is proposed, which brings about a smaller control magnitude and predefined time convergent rate. To ensure a satisfied transit and steady performance, some converted variables are defined based on which a novel prescribed performance guidance law is constructed. The input saturation problem is properly solved by designing a novel TBG-based one-order auxiliary system. Extensive simulation results have verified the effectiveness of the proposed method.
Attitude consensus coordination algorithm for spacecraft formation under compound disturbance
Authors: Zhang Yunxiao , Chen Chuanzhi , Zhang Yingxue , Yu Hongzhi , deng Xiaokang 
Published: May 2024

Abstract
To address the attitude coordination and consensus tracking problem in the multi-spacecraft system, a distributed attitude-coordinated strategy based on the Fixed-time theory is proposed. An observer based on second-order integral sliding mode is designed to accurately estimate the compound disturbance, which consists of external disturbance and inertia uncertainties. On the basis of the observed information, a distributed Fixed-time attitude coordination controller is proposed, which can guarantee the attitude tracking errors converge to zero in a fixed time. System stability is analyzed by using the Lyapunov function. Finally, simulations and comparison analysis demonstrate the effectiveness and superiority of the proposed control scheme.
Research on asymmetric spatial heterodyne spectroscopy for velocimetry navigation
Authors: Gao Yiwei , Wang Qiansheng , Cui Wenxin , Li Zhiwei , Luo Haiyan , Xiong Wei 
Published: May 2024

Abstract
The further development of deep space exploration contributes to the exploration of the universe and the origin and evolution of life on Earth, and is a prerequisite and foundation for the development and utilization of space resources. Autonomous navigation of deep space probes, one of the key technologies for deep space exploration, can significantly reduce ground support costs and improve the autonomous operation, management, and on-orbit survivability of deep space probes. Among them, autonomous astronomical navigation methods based on velocity measurements directly measure velocity information, effectively avoiding the impact of using calculus to solve velocity on response time and navigation accuracy in navigation methods based on angle and distance measurements. The passive radial velocity measurement technique of asymmetric spatial heterodyne spectroscopy has the advantages of compact structure, large luminous flux, and multiple spectra detected simultaneously. Taking the Sun as the navigation target source, we carried out the selection of observational spectral lines and the parameter design of the velocimetry navigation system, designed the calculation of phases for the absorption characteristic line under the complex polychromatic strong background, carried out the simulation analysis of velocimetry under the typical relative velocimetry.
Relative positioning method for unmanned aerial vehicles in complex electromagnetic environment
Authors: Yu Dongming , Liu Hong 
Published: May 2024

Abstract
In view of the problem that satellite navigation and positioning systems may fail or be unreliable in complex electromagnetic environments, which may lead to divergence of UAV positioning, the inertial navigation systems working for a long time may lead to increasing errors. This paper adopts a relative navigation algorithm that combines airborne inertial navigation systems and inter-aircraft relative information measurement. The algorithm requires each UAV to load relative navigation equipment and inertial navigation systems and acquire and fuse relative navigation information through inter-aircraft communication. In this relative navigation algorithm, the host and wing plane can transmit their respective navigation information and relative navigation information to each other, and fuse information from different sources through a Kalman filtering algorithm to enhance the accuracy of relative positioning data. With the help of corrected and feedback relative positioning data, the relative location of the host and wingman is achieved. The actual simulation results show that the relative position RMSE of the host, Wing Plane 1, and Wing Plane 2 in the X, Y, and Z dimensions are 1.345 m, 0.7388 m, 1.645 m, 2.167 m, 1.201 m, and 2.069 m, respectively. It is apparent that this scheme improves the relative navigation performance and robustness of the UAV group.
Design and characterization of a new high-count wide-range fission chamber based on GEM
Authors: Ye Yan-Xi , Zhao Xiu-Liang , Wang Xiao-Dong , Feng Song , Wei Qi-an , Tian Jin , He San-Jun 
Published: May 2024

Abstract
As one of the main detectors for monitoring neutron flux
rate in a nuclear reactor, the fission chamber (FC) suffers from
issues such as low sensitivity, limited counting rate dynamic range,
and system mode switching is cumbersome. This study utilizes the
advantages of gas electron multipliers (GEM), which are easy to
fabricate in large areas and have high counting rates, to design a
novel fission chamber. By conducting Monte Carlo simulations on
parameters such as the thickness of the 235U coating, the drift
distance, and the operating electric field strength, a wide-range
fission chamber design that combines high sensitivity and a counting
rate range based on GEM has been obtained. The simulation results
demonstrated that using a GEM detector to build a fission chamber
can significantly improve sensitivity and extend the counting rate
range. Subsequently we built a proof-of-concept GEM-based fission
chamber and tested it with a 55Fe low-energy X-ray source and
an Am-Be neutron source. The results showed that the
proof-of-concept detector had a good signal-to-noise ratio and
energy linearity, as well as clear discrimination between alpha
background and neutron pulse amplitudes.
Nonstationary thermodynamic and dynamic contributions to the interannual variability of winter sea ice growth in the Kara–Laptev Seas
Authors: Zhang Anjie , Yi Daling Li , Fan Ke 
Published: May 2024

Abstract
The Kara–Laptev Seas (KLS), known as the ‘Ice Factory of the Arctic’, witnesses rising instead of falling winter sea ice growth (WSIG) under the shrinkage of Arctic ice. However, knowledge of the large year-to-year variation is still unclear. Combining a seasonal ice concentration budget, a composite analysis, and a typical case study, we study both the interannual variability of WSIG in the KLS and the associated air-sea forcings during 1985–2021. Results quantitatively reveal that, during 1985–2021, thermodynamic melt in the melting season (April–August) contributed 80.3% to the interannual ice loss difference and promoted the subsequent WSIG by the recovery mechanism in the KLS. This consistent thermodynamic melt is caused by the strengthened summer Beaufort High, transporting heat and introducing a locally positive ice-albedo feedback. However, since 2010, the dynamic growth during the freezing season (October–February) has increasingly stimulated the WSIG. Typical cases in 2013 and 2017 indicate that the overlying anticyclonic atmospheric regime restricts the ice drift from the KLS and contributes to the dynamic growth of 41.6% of the WSIG difference, while the turbulent-heat-induced thermodynamic growth in winter is down to 58.4%. In short, we reveal an unstable relationship between the summer ice loss and the subsequent WSIG under the background of Arctic warming. Our study points out that the distinct dynamic ice growth driven by surface winds or ocean currents during the freezing season is likely to increase in the near future, with thinner and more mobile seasonal ice predominating in the Arctic.
Spinoza’s Theological-Political Treatise and the German Romantic Tradition
Authors: Forster Michael N 
Published: May 2024

Abstract
This chapter argues that the key figure in the channeling of Spinoza’s thought into German thought in the eighteenth century was the pre-Romantic philosopher Herder and that Herder’s earliest reception of it concerned not the Ethics, whose metaphysics he first embraced around 1773 but, rather, the Theological-Political Treatise, whose principles in philosophy of mind, hermeneutics, and political philosophy he already took over as early as 1768/9. The chapter explains Herder’s appropriation of ideas from the Theological-Political Treatise in each of these three areas. It then clarifies their continued influence via Herder on German Romanticism proper (Schleiermacher and Friedrich Schlegel).
Goethe and Spinoza on Faith, the State, and the Old Testament
Authors: Bollacher Martin 
Published: May 2024

Abstract
The relationship between Spinoza’s philosophy and Goethe’s own ideas, which Goethe himself refers to as “elective affinity,” is primarily guided by the Ethics and its identification of God and Nature. And yet, Goethe’s preoccupation with the Old Testament would be difficult to imagine without Spinoza’s historical-critical exegesis, his exploration of “libertas philosophandi,” or his distinction between national-religious authority and philosophy. Spinoza’s early influences can be inferred from the 1770s onward; his hermeneutic method had a fortifying effect on Goethe’s examination of the Book of Books, and the essay Israel in the Desert. Goethe’s direct knowledge of the TTP has been traced by H. E. G. Paulus to, at the latest, the 1802/3 edition of Spinoza’s Opera. But Goethe, whose engagement with Spinoza was widely influential, also differs from his “old lord and master” in his appreciation of the Bible as a record of prehistoric poetry.
Spinoza and the Growing Divide between Radical Enlightenment and Socialism in the German-Jewish Intellectual World of the 1830s and 1840s
Authors: Israel Jonathan 
Published: May 2024

Abstract
This chapter focuses on the divergent roles of early nineteenth-century intellectual revolutionaries Ludwig Börne, Heinrich Heine, and Moses Hess. It attempts to identify common ground between them and, more specifically, the reasons for the growing gulfs driving them apart despite their common rejection of the existing political, social, and religious status quo in Europe. Spinoza, both his philosophy and inspiring image, was to some extent a common bond, especially between Heine and Hess, and to a degree also between both of these and the young Karl Marx. At the same time, however, the growing incursion of early forms of socialism into their thinking came to operate as a factor driving their trajectories apart. While Heine’s revolutionary outlook is shown to be integral to the Radical Enlightenment tradition, the ideological positions of the others were definitely not.
David Friedrich Strauß and Spinoza
Authors: Beiser Frederick 
Published: May 2024

Abstract
This chapter outlines how “the father of unbelief” finally became, through a long struggle, the perfect Spinozist—more Spinozist in biblical interpretation than Spinoza was himself. David Friedrich Strauß may have explicitly engaged Spinoza only in lesser-known writings, and would initially have maintained Hegelian tendencies in tension with Spinoza, for instance finding philosophical truth in scripture by means of interpretation. However, Strauß would eventually abandon such Hegelianism and even come to criticize Spinoza for his inconsistency in elevating Christ, for his reading a naturalistic metaphysics into the Bible, and more. Insofar as he does so, he arguably adheres more closely to Spinoza’s hermeneutic principles, for instance proposing a focus on scripture itself in understanding scripture (solo scriptura), than Spinoza was able to.
Spinoza, Mendelssohn, and Hess on Zion
Authors: Harvey Warren Zev 
Published: May 2024

Abstract
Developing ideas of Maimonideans like Abulafia, Kaspi, and Polqar, Spinoza remarked in his Theological-Political Treatise that the re-establishment of the Jewish state would not be miraculous but natural. The ways of history are “changeable,” and nations rise, fall, and rise again. However, he continued, when opportunity presents itself to the Jews to regain their sovereignty, they will not be able to take advantage of it, since their religion has rendered their souls effeminate. When Mendelssohn was asked about a plan to re-establish the Jewish state, he replied that the Jewish nation does not have the strength for such a grand project. “Hundreds of years of oppression,” he wrote, “have drained our vigueur.” In Rome and Jerusalem, Moses Hess reinterpreted Spinoza’s remarks. “Spinoza,” he wrote, “held that the restoration of the Jewish state depends on the courage of the Jews.” This chapter aligns and elucidates these discussions.
“Let the Historian Be a Philosopher!”
Authors: Billet Shira 
Published: May 2024

Abstract
Spinoza developed a method of biblical interpretation that posited a strict division between Scripture’s history and philosophy’s history. Nineteenth-century philosophy’s more expansive sense of philosophy’s history created an opportunity to revisit Spinoza’s separation of philosophy from historical-philological sources such as the Bible. Hermann Cohen, with his unique background in philosophy as well as in classical and Hebrew philology, seized this opportunity in his extensive engagement with Spinoza in the final decade of his life. This chapter uncovers the methodological critique of Spinoza’s scriptural exegesis that is at the core of Cohen’s 1915 harshly critical monograph on Spinoza. To see the primarily philosophical-methodological aspect of Cohen’s work, it must especially be situated within a general methodological commitment to reading historical-philological sources philosophically, and vice versa, that he first developed in the 1870s and was central to Marburg neo-Kantianism.
Fractured Goodness
Authors: Shields Christopher 
Published: May 2024

Abstract
When Aristotle rejects Plato’s Form of the Good, he incurs a debt: given that he thinks that goodness is non-univocal—that there is no single, essence-specifying account of goodness covering all good things—he needs to provide an account of how the good things he wishes to compare and bring into ordinal rankings may be so ranked. For he also thinks that two things are commensurable under a single predicate F only if they are univocally F. We are thus left with two families of questions: (i) what, precisely, are Aristotle’s objections to the Form of the Good, and how successful are they? And (ii) on the assumption that they are successful, what is his alternative? Plato, it seems, whatever the final tenability of his theory may be, has an easy time with commensurability. He thinks that everything which qualifies as good does so because it participates in the Form of the Good, and that one good thing is better than another precisely to the degree that it realizes the Form of the Good by its participation in it. Given that according to Aristotle there simply is no Form of the Good, how and how well does he arrive at a defensible account of the commensurability of those good things he wishes to rank as better or worse than one another?