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3rd international symposium on aerospace Engineering and systems, ISAES 2024

作者： Huang, Zhiruo Qiu, Hongling School of Architecture and Design Nanchang University Nanchang China College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China

ISBN: (纸本)9798350350418

In recent years, quadrotors have received attention from a wide range of scholars. For the flight control of quadrotors, trajectory tracking control is particularly important. This paper introduces a Lyapunov-based backstepping model predictive control (LBMPC) method to address the quadrotor trajectory tracking problem under input saturation. Firstly, the mathematical formulation of the quadrotor is introduced, and the position model and attitude model are written separately. For the position controller, the backstepping control is adopted, while for the attitude controller, the Lyapunov-based model predictive control is used. Then, the stability of the system using the LBMPC is demonstrated. Finally, the simulation results show that LBMPC is able to complete the trajectory tracking task with input saturation. © 2024 IEEE.

关键词： Predictive control systems

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Multi-Spacecraft Formation Attitude Coordinated control with Communication Delay 2

Multi-Spacecraft Formation Attitude Coordinated Control with...

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2nd international symposium on aerospace Engineering and systems, ISAES 2023

作者： Zhou, Zhanjie Wang, Yan Harbin Institute of Technology School of Astronautics Harbin China

ISBN: (纸本)9798350303728

This paper proposes a novel approach to manage the attitude of spacecraft formation systems facing persistent communication delays. Communication delays can significantly impact the performance of attitude control systems. To tackle this issue, the proposed algorithm introduces an innovative technique that utilizes the theory of double-exponential control to accelerate the convergence of auxiliary variables constructed based on system errors. This approach effectively reduces the impact of communication delays and ensures stable attitude control. To establish the stability of the system, a Lyapunov-Krasovskii function is employed to derive stability conditions. Simulations are conducted to evaluate the effectiveness of the proposed approach. The simulation results demonstrate that the algorithm is highly effective in managing the attitude of spacecraft formation systems. © 2023 IEEE.

关键词： Time delay

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A Study on the Evaluation Technology of Human-Machine Interaction System Safety Considering the Comprehensive Impact of Time Pressure and Scenario Fusion control Transformation 10

A Study on the Evaluation Technology of Human-Machine Intera...

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10th international symposium on System Security, Safety, and Reliability, ISSSR 2024

作者： Liu, Kanglun Li, Xiaopeng Ren, Liming Zhang, Shanshan China Astronautics Standards Institute Beijing China

ISBN: (纸本)9798350362930

This study proposes a Bayesian network-based method for evaluating the security of human-machine interaction systems. It considers the effects of time pressure and scenario fusion control transitions on group member performance factors (such as cognitive load, BDI, and distributed situational awareness), and their relationship with system security. By constructing a multi-Agent discrete dynamic event framework, it investigates the independent impacts of time pressure and external environmental disturbances on system security and establishes a model for system security. Additionally, it analyzes various risk scenarios in aerospace systems, including ground risks, launch and in-orbit teleoperation risks, and extravehicular activity risks, while considering risk factors in different scenarios. Ultimately, the dynamic risk level of the system is assessed through dynamic Bayesian networks, resulting in a calculated accident probability of 0.14‰, demonstrating the effectiveness of the method. This research provides a new technological approach for evaluating the security of human-machine interaction and contributes to enhancing the safety of aerospace systems. © 2024 IEEE.

关键词： Bayesian networks

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Research on Spacecraft Structural Field Nodes Temperature Interpolation Algorithm 3

Research on Spacecraft Structural Field Nodes Temperature In...

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3rd international symposium on aerospace Engineering and systems, ISAES 2024

作者： Fu, Xiaoyi Hua, Yuntao Ma, Wenlai Cui, Hutao Zhao, Yang School of Astronautics Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)9798350350418

This research paper explores the application and effects of different interpolation algorithms in the thermal-structural coupling analysis of spacecraft, particularly comparing the back propagation (BP) neural network interpolation method with the multivariate Barnes interpolation method. Through actual case test simulations, the study demonstrates that the BP neural network interpolation surpasses the traditional multivariate Barnes interpolation method in terms of accuracy and efficiency. This research provides scientific evidence for selecting interpolation strategies based on different engineering requirements. © 2024 IEEE.

关键词： Interpolation

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Top-Level Modeling and Simulation of Civil Aircraft Fly-by-Wire Flight control System for Airworthiness Compliance Verification in Virtual Flight Testing 3

Top-Level Modeling and Simulation of Civil Aircraft Fly-by-W...

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3rd international symposium on aerospace Engineering and systems, ISAES 2024

作者： Guo, Banjun Cao, Yunfeng Ding, Meng Wang, Xichao College of Astronautics Nanjing University of Aeronautics and Astronautics Nanjing China College of Electrical Engineering Shanghai Dianji University Shanghai China

ISBN: (纸本)9798350350418

With the advancement of computer technology, Virtual Flight Testing (VFT) methods have gradually integrated into the early validation activities of the civil aircraft product Iifecycle, becoming a mainstream approach in product development. Addressing issues such as inconsistent understanding in traditional document-based methods and weak correlation between requirements and validation activities, this paper focuses on the civil aircraft Fly-by-Wire (FBW) Flight control System and proposes a top-level modeling and integrated simulation method for airworthiness validation in virtual flight testing. Firstly, starting from the descriptions in airworthiness regulations, we construct activity models for flight testing verification oriented towards compliance and quantitative constraint models. Secondly, we clarify the static structure, dynamic activities, and parameter constraint relationships within the system, establishing the top-level architecture model of the system. Subsequently, we create low-level simulation models for each unit within the system and achieve the correlation between the top-level and low-level models, thereby constructing a virtual integrated simulation environment based on SysML & Simulink. Finally, with the support of the virtual integrated simulation environment, we achieve real-time virtual simulation based on flight testing verification activities and automatic validation of airworthiness compliance. Experimental results demonstrate the system's compliance with the example airworthiness regulations, validating the feasibility of the proposed method. © 2024 IEEE.

关键词： Flight testing

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Algorithm for High-Dimensional Data Based on Comprehensible Deep Progressive Fuzzy Network 7

Algorithm for High-Dimensional Data Based on Comprehensible ...

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2023 7th international symposium on Computer Science and Intelligent control, ISCSIC 2023

作者： Qian, Jinyang Qi, Ruiyun Nanjing University of Aeronautics and Astronautics State Key Lab. of Mechanics and Control for Aerospace Structures College of Automation Engineering Nanjing China

ISBN: (纸本)9798350342987

Aiming at the 'dimension explosion' challenge of fuzzy systems in high-dimensional data processing, this paper proposes an algorithm of DPFS (Deep progressive fuzzy system), whose structure is the connection of many low-dimensional fuzzy systems. Through the comparison of experiments with different data sets, it is found that: *** algorithm retains the advantages of strong interpretability of the fuzzy system. *** DPFS algorithm, characterized by its progressive structure, exhibits a superiority of 7.9% over machine learning algorithms like BP and RBF. Moreover, it outperforms fuzzy system algorithms such as DNFS by more than 31.5% in terms of accuracy on the BF dataset. The research demonstrates that DPFS serves as an effective fuzzy system inference algorithm capable of effectively handling high-dimensional data, showcasing robust comprehensive capabilities. © 2023 IEEE.

关键词： Fuzzy systems

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Bidirectional energy-controlled piezoelectric shunt damping technology and its vibration attenuation performance

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international Journal of Mechanical System Dynamics 2024年第1期4卷 63-76页

作者： Yipeng Wu Quan Yuan Kaibin Ren Xin Shen Hui Shen Adrien Badel Hongli Ji Jinhao Qiu State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjingChina College of Mechanical and Electrical Engineering Qingdao UniversityQingdaoChina SYMME Laboratory Universite Savoie Mont BlancAnnecy le VieuxFrance

Piezoelectric material-based semi-active vibration control systems may effectively suppress vibration amplitude without any external power supply,or even harvest electrical *** bidirectional electrical energy control phenomenon is theoretically introduced and validated in this paper.A flyback transformer-based switching piezoelectric shunt circuit that can extract energy from or inject energy into piezoelectric elements is *** analytical expressions of the controlled energy and the corresponding vibration attenuation are therefore derived for a classical electromechanical cantilever *** predictions validated by the experimental results show that the structure vibration attenuation can be tuned from−5 to−25 dB under the given electrical quality factor of the circuit and figure of merit of the electromechanical structure,and the consumed power is in the range of−13 to 25 mW,which is a good theoretical basis for the development of self-sensing,self-adapting,and self-powered piezoelectric vibration control systems.

关键词： vibration control piezoelectric shunt damping electromechanical energy

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Dynamic Analysis of Thermo-Flexible Coupled Deployable Robotic Arm Solar Panels Based on ANCF 5

Dynamic Analysis of Thermo-Flexible Coupled Deployable Robot...

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5th international symposium on Robotics and Intelligent Manufacturing Technology, ISRIMT 2023

作者： Cai, Chensheng Zhu, Qinghua Tian, Qinglong Shao, Xiaowei Yang, Yulin Zhao, Zhenyu School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai Aerospace Control Technology Institute Shanghai200240 China Shanghai Aerospace Control Technology Institute Shanghai201101 China School of Mechanical and Electrical Engineering Hohai University Changzhou213200 China School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai200240 China Nanjing University of Aeronautics and Astronautics State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing China

ISBN: (纸本)9798350316087

The dynamic modeling and analysis of a deployable robotic arm with solar panels were conducted using thermo-flexible coupled thin plate elements and circular cross-section beam elements. The displacement and temperature field are discretized within one element based on unified description of absolute nodal coordinate formulation (ANCF). Therefor the thermo-flexible coupled element can conveniently describe the coupling of large-scale motion, large deformation, and thermal effects. The generalized-a method is used to solve dynamic equations and the heat transfer equations at the same time, which can accurately solve the bidirectional coupling problem between displacement and temperature fields. Finally, the numerical results show that the proposed method can effectively model and analyze the dynamics of thermo-flexible coupling systems. © 2023 IEEE.

关键词： Robotic arms

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Adaptive dynamic programming approach for Stackelberg game-based fault-tolerant control 6

Adaptive dynamic programming approach for Stackelberg game-b...

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6th international symposium on Autonomous systems, ISAS 2023

作者： Xu, Yuhang Jiang, Bin Meng, Yizhen Nanjing University of Aeronautics and Astronautics College of Automation Engineering Nanjing210016 China Shanghai Aerospace Control Technology Institute Shanghai201109 China Shanghai Key Laboratory of Aerospace Intelligent Control Technology Shanghai201109 China

ISBN: (纸本)9798350316155

Game-based fault-tolerant control is one of the critical aspects in modern control system, and it becomes more challenging for large-scale interconnected systems. In this article, an adaptive dynamic programming (ADP) approach is established for solving the Stackelberg game-based fault-tolerant control problem of the interconnected systems. Two critic neural networks are constructed for approximating the solutions of Stackelberg equilibrium, in which a group of adaptive weight updating laws are proposed to ensure the uniform ultimate bounded property of the systems' state as well as the weights of the critic neural networks. The outcomes of the simulations exhibit the efficacy of the designed approach. © 2023 IEEE.

关键词： Dynamic programming

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Fluid-structural interaction of dielectric elastic membrane airfoil 2

Fluid-structural interaction of dielectric elastic membrane ...

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2nd international symposium on aerospace Engineering and systems, ISAES 2023

作者： Hu, Shilin Kang, Wei Wang, Yanqing Northwestern Polytechnical University School of Astronautics Xian China

ISBN: (纸本)9798350303728

The flexible wing provides better maneuverability and efficiency in the low Reynolds number flow from the bioinspiration. A dielectric elastic membrane airfoil for active flow control is proposed. The aero-electro-structural coupling model is established using CFD/CSD coupling technique and verified. The results show that the lift of the dielectric elastic membrane airfoil is 12.33% higher than that of the rigid airfoil at angle of attack 14°, and the contribution ratio of the camber effect and vibration to the lift enhancement is 3:2. © 2023 IEEE.

关键词： Reynolds number

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