List of Dissertation Abstract （Environment and System Sciences System Design Course）
NameSupervisor

Title

Abstract
This study discusses on the deployment method for multi-agent system which is constructed by unmannedYosinori
ASADA

Study on Deployment Method for
Seiya UENO

Multi Unmanned Vehicles withTracking Networkvehicles. The tracking network is one of multi-agent system. It is expected to connect network between twoplaces divided by distances and obstacles. In this study, the deployment method for tracking network isproposed. This method is composite method which contains the network optimization method and thecoverage control method. Moreover, in this study, new evaluation method is considered. In this study, asimulation result of tracking network system controlled by proposed method is showed.
A linear electrical generator is a kind of device which can be used to Point-absorber type wave energy

HydroHydrodynamic Response ofHaruyuki

Motohiko

Arrayed Point Absorber WECs

IKEMASU

MURAI

Considering Hydrodynamic
Interaction and Control Forces

converter, for directly converting mechanical energy of a floating structure into electrical energy. A wave
farm consists of multiple Point absorber WECs which equipped in a sea area. In this paper, a numericalmodel is proposed considering `Hydrodynamic interaction' in the multiple floating structures, and the`Control force' of each linear electrical generator. We calculated the heave motion of plural floating bodies
by the numerical simulation considering that 2 issues, and verified the method of evaluating the power
generating performance of each body or the array-itself.

Takuo OGAWA

Kazumi
MATSUI

A mixed formulation for multi-In this paper, a mixed formulation for multi-scale simulation method is shown. In order to avoid volumetricscale simulation method in finite

locking caused by uncompressed problem, mixed formulation of 6 variables was done. This research madedeformations

it possible to perform uncompressed multiscale analysis with lower computational cost.
In the sliding friction of elastomer, abrasion pattern (AP) orthogonal to the sliding direction may begenerated in some cases. When AP is generated, machine performance and life span are reduced, soTomohiro

KenKANONAKANO

Liner wear of elastic block andrigid blade

understanding of its mechanism is desired. Also, internal deformations of elastomer which can be importantin understanding the sliding friction of the elastomer easily occurs. In this study, to understand themechanism of AP generation, a novel experimental apparatus has been developed, which can obtain internalinformation. By using this device, the influence of the sliding speed on the AP was investigated and theresults were classified.

In this paper, a guidance and control law in the power descending phase for lunar lander is focused on. InYuta KIMURA

Takehiro
HIGUCHI

Study on Robust Guidance andControl Law using Variable
Coasting Time for Lunar Lander

this phase, guidance by the polynomial guidance law is operated. However, a calculation by this guidance
law is sometimes diverged due to large error. In this paper, a variable coasting time is proposed to solve thisproblem. Comparing the velocity and the position at a start point and a target point, the coasting time iscalculated by a simple equation automatically. In a simulation, an effect and an available range of proposed
method are shown.

Takuhiro

Takahiro

KUMAGAIYAMADAMoeko

Takahiro

KOICHIYAMADA

Large Deformation Analysis of

In this paper, we propose a numerical procedure for large deformation problems of tension structures forTension Structures by using Level

surgical simulators. We employ Level Set method without element decomposition to analyze them. We

Set Boundary Expressions

discuss validity of this technique by comparing the conventional lagragian technique.

On application of finite element
analysis to evaluation of sutureskillsMedical treatments are rarely evaluated as physical phenomena and the technique to evaluate skills ofsurgeons quantitatively needs to be developed. In this work, a numerical procedure using ALE finite
element method is proposed to evaluate suture skills. In the present approach, sliding can be expressed in aform in which the soft tissue and the suture thread are always aligned in the deformed shape.
In recent years, demand for unmanned vehicle has increased and group control is an important technology.

ShoheiTakehiro

KOYAMAHIGUCHI

Study on Formation Control ofIn this research, we aim to control to distribute vehicles with different objects in areas. In order to mixHeterogeneous Vehicles Using

attributes, we introduce a pole control law simulating magnetic force. As a method for quantitatively

Multi Poles

evaluating the mixture of attributes, the mixing degree by information entropy is applied. By simulation, it
was possible to confirm the mixture of attributes by visual and mixing degree.

Ryota SUZUKI

Takehiro
HIGUCHI

Study on Trajectory Optimization

This paper and simulations aim to establish the method of trajectory generation of Trajectory Basedof Multiple Aircraft Using

Operation (TBO). TBO requires trajectory calculation, but its method has not been established yet. In this

Homotopy Method

paper, calculation method for trajectory optimization problem including conflict resolution is proposed.
Some of the abdominal surgery have been performed by laparoscopic surgery in recent years. We havedeveloped practical preoperative training simulators using patient particular data and surgery navigation

Kensuke

KazumiSUHARA

MATSUI

Automatic generation of geometricmodel including membranes inhuman abdominal cavity

system connecting the result of preoperative simulation with real operation electronically. The surgeon getspatient particular data by segmenting some required objects based on CT data manually. However, thesystem can’t currently generate membranes because it doesn’t recognize them from CT data. In this paper,
we propose an automatic algorithm to generate geometric model for surgical operation simulator. It is
included membranes in human abdominal cavity which can’t be recognized from CT data. We employ alevel set method to morph the model that internal organs and membranes simultaneously.

KenyaKazumi

SUMIDA

MATSUI

Development Of Elasticity

Finite element analysis in the current surgical simulator processes organs and uses them as physicalModulus Identification System For

property values of the identified organs. The purpose of this study is to develop a system for identifying theThe Soft Tisuue After Removal

elasticity modulus of the soft tissue immediately after removal using inverse analysis.
According to the development of Deep Learning, the neural networks have been widely used in many kindsof fields. But the main use of the neural networks is classification problem, which classify inputs intoTomokiToshihikoDOURASHIRAISHI

A Study of Sound Source

appropriate categories by pattern recognition, and there have not been developed effective way to use neural

Separation Using Spectrogram

networks to sound source separation problems. In this study, we developed a novel method to use neural

Analysis by Neural Networks

networks to sound source separation by using spectrogram analysis, which could convert separation
problems into classification problems. And by the simulations, we confirmed the validity and usefulness ofthe method.
This study considers that the deformation of the lubricated surface varies depending on the position. And
this study evaluate the influence of the flow path deformation on the lubrication characteristics by using

Hidemasa

Takahiro

Numerical evaluation of fluid withNAKAJIMAYAMADAelastic deformations

Fluid-Structure Interaction analysis. At that time, the patterns of the deformation of the wall was classified
as translational deformation, angle change, elastic deformation, and the influence of each deformation
pattern on the lubrication characteristics was evaluated using Stribeck curve. There are cases where the wall
surface to be deformed is the upper surface and the lower surface. So, this paper proposed an analyticalmodels for each cases, and evaluated the friction characteristics.

A Study of a Mechanosensing
YukiToshihiko

NAKAMURASHIRAISHI

System of a Cultured Osteoblast
under Mechanical Vibration
Considering Its Modes ofVibration.

Osteoblastic cells respond to mechanical vibration and generate the bone mass with a peak at a specificfrequency like a resonance curve. However, a cell sensing mechanism to the vibration has not beenclarified. To reveal the mechanism, the objective of this study is to observe a cell under the vibration
focusing on cell deformation considering an analogy between cell biochemical response to the vibration anda resonance curve. We vibrated a cell on a microscope stage by an exciter and captured images with a highsensitivity and high speed camera.

This paper describes the mechanism of cell proliferation promotion by mechanical vibration focusing on β-Akitoshi

Toshihiko

NISHIJIMASHIRAISHIA Study of a Proliferation

catenin. In recent medical treatments, Low Intensity Pulsed Ultrasound (LIPUS) has been reported toPromotion

promote fracture repair. However, it is unknown how cells sense mechanical vibration and transmit growth

Mechanism of Cultured

information. I focused on β-catenin which is a kind of protein related to cell proliferation. The frequency

Osteoblasts by Mechanicaland the acceleration amplitude were set to 12.5 Hz and 0.5 G, respectively. The experiments indicate thatVibration Focusing on β-catenin

the cell density of the vibration group was significantly higher than that of the non-vibration group after day
10.
Researches and developments of a Flying Test Bed (FTB) for planetary landing have been advanced toDevelopment of Experiment MultiChiharu NIWA

Seiya UENO

rotor UAV for Planetary Landing
Flying Test Bed (FTB)

develop landing technologies for planetary investigation such as the Moon and Mars in the future. In thisstudy, a pre-experimental unit using Unmanned Aerial Vehicle (UAV) is prepared as an independent
verification environment for FTB control system. In order to verify whether it is possible to fly as aircraft
performance, a control law was examined by simulation introducing PD control and a flight test wasconducted.

Shota
HAYAKAWAA Possibility of Learning andLearning ability of cells has been examined by mathematical models of signaling networks. In cells,Memorizing

signaling networks are expected to play the part of a control system considering analogy with actual neural

MORISHITA of Cells through Signaling

network. Mathematical models of signaling network are proposed and applied to map signals. The results

Shin

Networkshow the possibility of learning ability of cells.
This study proposes a new multirotor equipped with Control Moment Gyro (CMG). The airframe has more

Takumi HOSHI

Takehiro
HIGUCHI

Study on Guidance Control andpotential than standard multirotor. However, there is a serious problem for CMG system. This isSingularity Problem of Multirotor‘Singularity problem’. In this airframe, any rotor error may cause singularity. Therefore, a control law iswith CMGs

required for rotor error to avoid singularity. This study shows the fault diagnosis method using CMG input
and the control input for any rotor error.
Numerical simulation is utilized widely for shortening the development period and the cost cut including

Hiroki
MINAMIZAWA

Method of Nearby Problems forKazumi

Finite Element Analysis

MATSUI

Considering Dissimilar MaterialInterface

manufacturing industry in recent years. Therefore improvement of reliability becomes important. The
approach called V&V which performs Verification and Validation is used as a confirmation method of thereliability. In this reserch, method of nearby problems is applied for the elastic finite-element analysis
considering the dissimilar material interface. A lamp function is introduced to a basis function in order tomake a characteristic of the discontinuity of strain on a dissimilar material interface. Numerical examples
are shown to evaluate a characteristic and validity of this approach.

Recently, the introduction of wind energy is progressing mainly in the developed countries as a key energy,
A study on the motion of the twinand wind turbine steps forward on the sea. In 2013, Hashimoto studied experimentally a twin floating

Ryohei

Motohiko

floating vertical wind turbines

vertical wind turbines system. The system showed effective, but it was pitching in waves of comparatively

MOCHIZUKI

MURAI

equipped with Oscillating Water

short period. Therefore, I focus on Oscillating Water Column which is one of the wave generation types andColumn

is expected reduction in the motion of floating. In this study, I confirmed reduction in the motion by effectof OWC and power generation at the same time by calculating the motion of FOWT equipped with OWC.
The experiments focusing on a cell membrane protein under vibration and natural vibration analysis wereconducted to reveal a mechanism of sensing vibration and translating into signals. Integrin, one of cell
membrane protein and acts as cell adhesion, is one of most candidate for sensors of their dynamicShotaYAMAMOTOShin

A cell membrane protein's sensing

MORISHITA function for vibration

surroundings. In order to access integrin was related to sensing vibration and cell response, we cultured 6
types of cells which express different conditions under vibration and constructed lumped mass-spring
system of integrin and analyzed in NASTRAN. The results of experiments showed integrin attaching
fibronectin is one of essential factors for sensing vibration and proliferation. The results of natural vibration
analysis indicated the lowest natural frequency of integrin with fibronectin was in order of MHz.

Sungbae OHTakahiroYAMADA

Method of Global-local Simulation

In this paper, I implement an effective remeshing method for local region assuming polycrystal model andFor Marker Integration Finite

restart function corresponding to multiple passes in marker integral finite element method. Through this, I

Element Method

constructed a series of flows which based on global - local non-coupled approximate solution method.