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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Li, Geng Zhou, Qinbo Wang, Guoping Li, Tang National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing China Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

At present, each program for launch dynamics of multibody systems (LDMS) has its own data structure without a unified standard, which is not beneficial to the program development and maintenance. To improve the program's versatility, it is important to study the standardization of the data structure and input data for the LDMS code. Based on the launching subsystem proposed in (Zhou et al., Def Technol 17(6), 2011–2026 [4]), we design a general data structure and standard input data (SID) for the codes of the launching subsystem dynamics in this work. Based on object-oriented programming (OOP) technology, the unified modeling language (UML) is adopted to describe the geometry, kinematics, kinetics and subjected forces of the launching subsystem. The UML class diagram is used to describe the variable properties, such as definitions, types, and default units within each data structure. At the same time, the relationship among various classes is represented by straight or dashed line segments with a specialized convention. Further, the input data structure of the launching subsystem dynamics code is designed: the SID is defined for parameter initialization, which is stored in an extensible markup language (XML) document and read by the program. This work provides a theoretical basis and important guidance for the program design of LDMS. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： XML

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Research on Fault Diagnosis and Related Control Software of Armored Vehicle Magnetorheological Suspension system 2nd

Research on Fault Diagnosis and Related Control Software of ...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Liang, Jiahao Zhu, Hongtao Zhu, Wei National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The damping force of armored vehicle magnetorheological (MR) dampers is controlled by changing the coil current, so whether the coil current can be effectively controlled and fault diagnosis has a significant impact on the working effect of MR dampers. To address this issue, the excitation coil is simplified as an inductance resistance model. By detecting the working current and voltage, the circuit operating state parameters of the MR damper are observed to determine system faults and achieve effective estimation;Based on the estimated results, control algorithms are used to control the working state of the coil circuit, improving the response speed of the system without affecting the stability of the MR damper. Based on heat transfer theory, a temperature rise model of a MR damper can be established. Combined with Bingham model, the relationship between the output force and temperature of the MR damper can be obtained. By using an improved genetic algorithm, the corresponding mechanical parameters can be identified. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Armored vehicles

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Research on High-Speed Camera Testing Method for Initial Disturbance of Large-Caliber Artillery Projectiles 2nd

Research on High-Speed Camera Testing Method for Initial Dis...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Rao, Zixuan Zhang, Xu Yang, Fufeng Feng, Yu National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The initial disturbance of the projectile has an important impact on the accuracy of artillery shooting, and in order to reduce the initial disturbance and improve the shooting accuracy of large-caliber artillery, a high-speed camera method is adopted to study the initial disturbance of the projectile. The velocity, attitude angle, and angular velocity of the projectile at the muzzle are used to characterize the initial disturbance of the projectile. A binocular camera calibration model is constructed to obtain the camera parameter matrix, and the three-dimensional reconstruction of the markers on the projectile and the gun barrel is performed to obtain the initial disturbance parameters of the projectile and the muzzle vibration parameters. This method has the characteristics of non-contact and strong flexibility, and the obtained experimental data truly reflects the state of the projectile at the muzzle and the muzzle vibration parameters during the period from launch to muzzle exit of the projectile. The obtained data can provide a basis for the structural design of artillery. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Projectiles

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Track system Dynamic Analysis by the Riccati Multibody system Transfer Matrix Method 2nd

Track System Dynamic Analysis by the Riccati Multibody Syste...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Miao, Yangyang Rui, Xiaoting Wang, Pingxin Zhang, Jianshu Institute of Launch Dynamics National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The track systems are an important part of the tracked vehicle dynamics modeling. The Riccati Multibody system Transfer Matrix Method (RMSTMM) is adopted to model the dynamics of the tracked systems. During the process, the state variables at the connected ends of the elements within the track systems are transferred through low-order matrices that are independent of the system degrees of freedom, and there are no global dynamics equations with a system inertia matrix. Therefore, using the RMSTMM to analyze the track system has the advantage of facilitating access to the physical quantities associated with the state variables of the components. In conjunction with modeling process, the dynamic characteristics of the track system under different simulation conditions are analyzed, including the applied force of a track shoe running for one revolution and the dynamic tension distribution of the track system. Numerical investigations have shown that based on the RMSTMM, the analysis method of the track system can analyze the dynamic characteristics of tracks at a detailed level, while the method has strong designability and practical. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Transfer matrix method

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Mitigating overtrust towards robot in mixed reality interfaces 1

Mitigating overtrust towards robot in mixed reality interfac...

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1st International Conference on Artificial Intelligence and Human-Computer Interaction, ArtInHCI 2023

作者： He, Di Zhao, Changshun Zhang, Kaiyue Yang, Hongrong Liu, Ying University of Electronic Science and Technology of China Chengdu China National Key Laboratory for Complex Systems Simulation Beijing China Officers College of PAP Chengdu China

ISBN: (纸本)9781643685083

This research focuses on the role of trust in human-agent interaction, particularly in the context of home robot systems. The study found that participants were more likely to collaborate when they understood the agent's intentions. The research involved 36 participants working with an agent across three different interfaces to complete household tasks. The results showed that clear agent intentions can increase cooperation and calibrate trust to an appropriate level. © 2024 The Authors.

关键词： Human robot interaction

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Turbulent drag reduction by sector-shaped counter-flow dielectric barrier discharge plasma actuator

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Chinese Physics B 2025年第2期34卷 362-370页

作者： Borui Zheng Shaojie Qi Minghao Yu Jianbo Zhang Linwu Wang Dongliang Bian School of Automation and Information Engineering Xi’an University of TechnologyXi’an 710048China School of Mechanical and Precision Instrument Engineering Xi’an University of TechnologyXi’an 710048China Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi’an 710038China Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi’an 710048China Shaanxi University Key Laboratory of Photonic Power Devices and Discharge Regulation Xi’an 710048China

The primary objective in aircraft transportation is to minimize turbulent drag, thereby conserving energy and reducing emissions. We propose a sector-shaped counter-flow dielectric barrier discharge plasma actuator, which leverages jet synthesis for drag reduction. A drag control experiment was conducted in a low-speed wind tunnel with a controlled flow velocity of 9.6 m/s(Re = 1.445 × 10^(4)). This study investigated the effects of varying pulse frequencies and actuation voltages on the turbulent boundary layer. Using a hot-wire measurement system, we analyzed the pulsating and time-averaged velocity distributions within the boundary layer to evaluate the streamwise turbulent drag reduction. The results show that the local TDR decreases as the pulse frequency increases, reaching a maximum reduction of approximately 20.97% at a pulse frequency of 50 Hz. In addition, as the actuation voltage increases, the friction coefficient decreases, increasing the drag reduction rate. The maximum drag reduction of approximately 33.34% is achieved at an actuation voltage of 10 kV.

关键词： plasma flow control turbulent boundary layer turbulent drag reduction

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simulation Experiment Factor Screening Method Based on Combinatorial Optimization 21st

Simulation Experiment Factor Screening Method Based on Combi...

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21st Asia simulation Conference, AsiaSim 2022

作者： Zhang, Peng Li, Wei Chen, Qingao Tong, Jiahui Control and Simulation Center Harbin Institute of Technology Harbin China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (纸本)9789811991974

When conducting complex simulation experiments, experimental factor screening is of great significance to improve the effectiveness and efficiency of the simulation. Aiming at the problems of unsatisfactory accuracy and efficiency of existing experimental factor screening methods, a simulation experiment factor screening method based on combinatorial optimization (EFS-CO) was designed. EFS-CO abstracts the experimental factor screening problem into a combinatorial optimization problem, designs the experimental factor evaluation criteria based on the support vector machine model, uses it as the fitness function of the genetic algorithm, and finally obtains the significant experimental factor. At the same time, to eliminate the influence of the randomness of the genetic algorithm on the screening results, the screening results of the experimental factors were determined based on the results of multiple experiments. Finally, the effectiveness of the method is verified by example analysis and comparing the results with the traditional experimental factor screening method. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Combinatorial optimization

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An ISAR Image Reconstruction Method via Signal Support Reweighted l1 Minimization 2

An ISAR Image Reconstruction Method via Signal Support Rewei...

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2nd IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024

作者： Zhao, Tiehua Wu, Qihua Xu, Zhiming Ai, Xiaofeng Zhao, Feng Xiao, Shunping National University of Defense Technology The State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System College of Electronic Science and Technology Changsha China

ISBN: (纸本)9798331515669

The sparse aperture caused by data loss or unintentional interference is the actual problem in radar imaging process. Therefore, a compressed sensing (CS) based ISAR image reconstruction method with signal support aided is proposed in this paper. Firstly, the signal support is constructed from FFT-based imaging results. Then the signal support is introduced as a prior information into the reweighted function during the CS reconstruction. The simulation results show that, when the azimuth effective aperture ratio is as low as 30 % and signal-to-noise ratio (SNR) equals to -10 dB, the proposed method can obtain clear imaging results like that of complete aperture data. Besides, compared with the traditional CS reconstruction method, the number of false points in the reconstruction results by proposed method is greatly reduced. © 2024 IEEE.

关键词： Radar imaging

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Morphing-Aided Maneuver Control of Morphing Aircraft with Variable Wing Span and Sweep Angle

Morphing-Aided Maneuver Control of Morphing Aircraft with Va...

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International Conference on Guidance, Navigation and Control, ICGNC 2022

作者： Wang, Zijian Hou, Mingzhe Hao, Mingrui Harbin Institute of Technology Harbin China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (纸本)9789811966125

This paper presents a longitudinal morphing-aided maneuver control model of an aircraft which could change wing span and change sweep angle, and solved the morphing aircraft control problem of parameter uncertainty and external disturbance by a robust composite control strategy with nonlinear control allocation. Based on DATCOM simulation software and nonlinear least square interpolation, the aerodynamic model is obtained, and established the longitudinal morphing-aided maneuver control model of morphing aircraft. To ensure the maneuverability of the morphing aircraft, a nominal controller which could converge in finite time is designed. The integral sliding mode disturbance observer with super screw control is designed to eliminate the tremor, and the uncertainties and external disturbances are observed and compensated. Then the obtained control signals are assigned to each control inputs through nonlinear control allocation. The simulation result show the effectiveness of the scheme, and prove that the aircraft has good tracking performance by independently changing the shape to assist the traditional control surface. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Aircraft control

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An In-Bore Projectile and a Flexible Tube Seen as a Superelement in Launch Dynamics Using Reduced Multibody system Transfer Matrix Method 2nd

An In-Bore Projectile and a Flexible Tube Seen as a Superele...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Zhou, Qinbo Zhang, Jianshu Wang, Xun Li, Geng Rui, Xiaoting Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China National Key Laboratory of Complex Multibody System Dynamics Nanjing China

ISBN: (纸本)9789819980475

Launch dynamics of multibody systems (LDMS) studies the forces and motions of the rigid-flexible coupled multibody system composed of an artillery and a projectile during the launch process. In the authors’ previous work, the marching fire of LDMS where the launching carrier experiences a large overall motion in space is simulated, with the artillery being formulated by the multibody system transfer matrix method (MSTMM) and the projectile by the Newton–Euler method. However, such a hybrid formulation does not facilitate the study of LDMS. In this paper, the marching fire of LDMS is formulated in a unified framework of the reduced MSTMM. This is achieved by treating the flexible tube and the rigid projectile as a superelement and deducing the reduced transformation at the output end O of the superelement. The kinematics and kinetics of the superelement are analyzed and then used as basic equations for such deduction. The derived reduced transformation fits for launching subsystem with marching fire including rocket-launcher, and projectile-artillery with or without rifling. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Transfer matrix method

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