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Adaptive Finite-Time Reconfiguration control for Spacecraft Formation with Collision Avoidance

Adaptive Finite-Time Reconfiguration Control for Spacecraft ...

引用

International Conference on Guidance, Navigation and control, ICGNC 2020

作者： Yang, Xicheng Zong, Qun Zhang, Xiuyun Liu, Wenjing School of Electrical Automation and Information Engineering Tianjin University Tianjin300072 China Beijing Institute of Control Engineering Science and Technology on Space Intelligent Control Laboratory Beijing100190 China

ISBN: (纸本)9789811581540

This paper studies formation reconstruction problem for multi-spacecraft with collision avoidance. Firstly, the virtual velocity for desired formation is designed based on the artificial potential field (APF) approach. An adaptive potential field for collision avoidance is proposed to enable the spacecraft to adjust the repulsion force automatically when implementing the collision avoidance strategy. An auxiliary function is introduced to solve the local minimum problem without destabilizing the multiple spacecraft system. Then, we propose a new adaptive finite-time reconfiguration controller, which can achieve fully distributed formation under collision avoidance. The stability of the multiple spacecraft system is proved by Lyapunov analysis. Simulation results verify the proposed strategy can accomplish the target of formation reconstruction successfully. © 2022, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Collision avoidance

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MA-RRT∗ Algorithm for Path Planning with Maximum Rotation Angle Constraint and Adaptive Crossing Threat Zone 42

MA-RRT∗ Algorithm for Path Planning with Maximum Rotation A...

引用

42nd Chinese control Conference, CCC 2023

作者： Luo, Jiong Heng, Yong Li, Qi Hua, Yongzhao Dong, Xiwang Ren, Zhang School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Beijing Institute of Electronic System Engineering Beijing100854 China Institute of Artificial Intelligence Beihang University Beijing100191 China

ISBN: (纸本)9789887581543

With the gradual diversification of modern application scenes, the demand for UAV path planning is becoming more and more abundant. This paper first introduces a possible battle scenario, and the problems that must be considered in path planning in this scene are analyzed: the maximum rotation angle constraint and the demand that the UAV can cross the threat zone flexibly. Maximum rotation angle and Adaptive crossing threat zone RRT∗(MA-RRT∗) algorithm is proposed to solve the above problems. The algorithm improves the reconnection process of neighbor set in RRT∗, and adds the maximum rotation angle constraint to the RRT∗ framework, so that the generated path strictly meets this constraint. In addition, the above process also reduces the time consumption of RRT∗, and the speed advantage of MA-RRT∗ becomes more and more obvious with the increase of iteration times. Then, the obstacle information is regarded as one of the components of the node cost of the path, and the original obstacle is regarded as a soft constraint. This enables the path to adaptively cross the threat zone, which is more in line with the actual situation. We compare our algorithm with RRT∗ in numerical simulation, which verifies the effectiveness and time consumption advantages of the algorithm. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Motion planning

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Predefined time attitude control for quadrotor UAV with output constraints and input saturation

Predefined time attitude control for quadrotor UAV with outp...

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2024 China automation Congress, CAC 2024

作者： Li, Shuo Pei, Hailong Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangdong Engineering Technology Research Center of Unmanned Aerial Vehicle Systems College of Automation Science and Enginneering South China University of Technology Guangzhou510640 China Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangdong Engineering Technology Research Center of Unmanned Aerial Vehicle Systems School of Automation Science and Enginneering South China University of Technology Guangzhou510640 China

ISBN: (纸本)9798350368604

In this paper, we examine the predefined time flight control of a quadrotor UAV with output constraints and input saturation. The attitude tracking error of UAV is constrained by the tan-type barrier Lyapunov function. The undesirable effects of the saturated input limitations are addressed by introducing an auxiliary system. Then a predefined time tracking control strategy is designed and the stability of the scheme is analyzed. Eventually, the simulation results show the method allows the angular tracking error to converge to the specified range in a predefined time. © 2024 IEEE.

关键词： Unmanned aerial vehicles (UAV)

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Impact Angle control Guidance for a Moving Target with General Field-of-View Constraints 42

Impact Angle Control Guidance for a Moving Target with Gener...

引用

42nd Chinese control Conference, CCC 2023

作者： Tang, Xiangyu Yu, Jianglong Peng, Siting Dong, Xiwang Li, Qingdong Ren, Zhang School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Institute of Artificial Intelligence Beihang University Beijing100191 China Beijing Electro-Mechanical Engineering Institute Beijing100074 China

ISBN: (纸本)9789887581543

This paper studies the impact angle control guidance problem with general field-of-view (FOV) constraints for a moving target. Firstly, the control Lyapunov function (CLF) is constructed based on the state-dependent Riccati equation (SDRE) technique, and a nominal controller is designed to intercept the moving target at the desired impact angle without FOV constraints. The control barrier functions (CBFs) are designed according to the FOV constraints. Secondly, the CLF that guarantees stability is combined with the CBFs that guarantee forward invariance of the constraint sets. The minimum modification framework is used to numerically solve the guidance command through quadratic programming to ensure that the look angle of the missile always remains within the constraint interval during the interception process. Finally, the effectiveness of the proposed guidance law is verified by numerical examples. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Electronic guidance systems

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ELECTROMAGNETIC THERMAL DESIGN AND ANALYSIS OF AVIATION DUAL THREE-PHASE PERMANENT MAGNET MACHINE

ELECTROMAGNETIC THERMAL DESIGN AND ANALYSIS OF AVIATION DUAL...

引用

2024 CSAA/IET International Conference on Aircraft Utility Systems, AUS 2024

作者： Wang, Jin Yan, Liang Gao, Xiaoshan Su, Hang School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Tianmushan Laboratory Hangzhou310023 China Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China

The multi-phase redundant permanent magnet machine is essentially a permanent magnet synchronous motor (PMSM) with multiple sets of windings arranged on the stator. This configuration facilitates fault-tolerant operation of the PMSM in the event of one or multiple phase windings failing. In response to the practical requirements of electromechanical actuation systems in the aviation industry, this paper proposed a solution for a high-power, high-speed multi-phase redundant permanent magnet machine. The stator and rotor configuration of the multi-phase machine, along with short-circuit current suppression, are analysed, leading to the design of a prototype with specifications of 7.3 kW and 14,000 rpm. The finite element method is employed to simulate the machine's performance under no-load and full-load conditions, as well as its redundancy and thermal characteristics. The simulation results verify the correctness of the design approach well. © The Institution of engineering & Technology 2024.

关键词： Stators

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Improved Auction Algorithm for Weapon Target Assignment with Firepower-Health Model 42

Improved Auction Algorithm for Weapon Target Assignment with...

引用

42nd Chinese control Conference, CCC 2023

作者： Wang, Shuobo Heng, Yong Hua, Yongzhao Dong, Xiwang Ren, Zhang Institute of Artificial Intelligence Beihang University Beijing100191 China Beijing Institute of Electronic System Engineering Beijing100854 China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China

ISBN: (纸本)9789887581543

This paper proposes an improved auction algorithm to optimize the efficiency of dynamic weapon target assignment (WTA) problem. Firstly, the dynamic battlefield environment of firepower-health model is analyzed and the constraints of weapon assignment problem are established. The firepower-health model is about the idea of adding constraints of weapon firepower and target health to promote the result of assignment more effectively. Secondly, in order to improve the computing speed of WTA algorithm, the penalty mechanism is introduced in the compensation auction algorithm. The main idea of improved algorithm is to reduce the extra consuming of the weapon during the assignment, from which penalty mechanism can optimize the assignment results and reduce the number of algorithm iterations by punishing the overkilled target under certain rules. Finally, the simulation results based on the dynamic firepower-health model show that the proposed algorithm can meet the requirements of firepower allocation, and can promote the effectiveness of assignment with high real-time response. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Dynamics

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Adaptive control Scheme for Clustering of Nodes Based on the Signs of Connections in Dynamical Signed Networks 19th

Adaptive Control Scheme for Clustering of Nodes Based on ...

引用

19th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2023

作者： Wang, Qi Wang, Yinhe Gao, Zilin Gao, Peitao Xiong, Jianbin Cen, Jian Gao, Ying School of Automation Guangdong Polytechnic Normal University Guangzhou510665 China School of Automation Guangdong University of Technology Guangzhou510006 China College of Computer Science and Engineering Chongqing Three Gorges University Chongqing404020 China School of Electronics and Information Guangdong Polytechnic Normal University Guangzhou510665 China Guangzhou Intelligent Building Equipment Information Integration and Control Key Laboratory Guangzhou510665 China School of Computer Science and Engineering South China University of Technology Guagnzhou510641 China

ISBN: (纸本)9783031651229

The concept of clustering has garnered significant attention within the field of complex networks. Numerous clustering algorithms have been documented in the extant academic literature. However, most of them consider static signed networks, which are not suitable for dynamical networks. For dynamical signed networks, there is a class of algorithms called cluster dynamics. Nevertheless, they regard the connection to be time-invariant, which is a constraint. In this paper, for a kind of dynamical signed networks with time-varying connections, we discuss the adaptive control scheme for clustering of nodes, such that the network evolves asymptotically into a classifiable network that contains several friends’ groups with clear sign boundaries. In other words, through the careful design of the controller for the nodes and the establishment of coupling relationships between the nodes and their connections, we ensure that the connection of the dynamical signed network can approximate asymptotically the connection of a given classifiable network, as measured by the concept of uniformly ultimately bounded (UUB). Finally, the simulation is used to illustrate the validity of the method proposed in this paper. © ICST Institute for Computer sciences, Social Informatics and Telecommunications engineering 2024.

关键词： Adaptive control Classifiable networks Multi-clustering

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ANALYSIS OF SURFACE-MOUNTED PERMANENT MAGNET SYNCHRONOUS ELECTRIC MACHINE PARAMETERS ON THE OUTPUT TORQUE AND EFFICIENCY

ANALYSIS OF SURFACE-MOUNTED PERMANENT MAGNET SYNCHRONOUS ELE...

引用

2024 CSAA/IET International Conference on Aircraft Utility Systems, AUS 2024

作者： Su, Hang Yan, Liang Wei, Xiaocheng Wang, Jin Jin, Zijian Dong, Ziwei School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Tianmushan Laboratory Hangzhou310023 China Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China

Surface-mounted permanent magnet synchronous electric machines play an important role in industrial production. Output torque and efficiency are important indicators of electric machines. The key parameters of electric machines have a great influence on output torque and efficiency. First, this paper gives the conceptual design diagram of the electric machine and derives the governing equations of output torque and efficiency. The electric machine structure parameters are optimized by numerical simulation, and the relationships between the core material, permanent magnet grade and output torque and efficiency are studied. Subsequently, the influence of stator and rotor parameters on output torque and efficiency is researched. The research results show that high-performance cores, high-grade permanent magnets, large tooth width, small slot open width, large magnet thickness and electrical angle, and small magnet reduction can help improve the output torque and efficiency of the motor. © The Institution of engineering & Technology 2024.

关键词： Permanent magnets

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Q-learning-based space target selection for CNS/INS integrated navigation

Q-learning-based space target selection for CNS/INS integrat...

引用

Chinese control and Decision Conference, CCDC

作者： Dong Wang Jing Yang Kai Xiong School of Automation Science and Electrical Engineering Beihang University Beijing China Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control Engineering Beijing China

ISBN: (数字)9798350387780

ISBN: (纸本)9798350387797

To solve the problem that intermittent celestial observation will hamper the navigation accuracy of celestial and inertial integrated navigation system (CNS/INS), a Q-learning-based space target selection method is proposed. The visibility situation of space targets is analyzed under given flight mission, which lays the foundation for subsequent pointing optimization. Q-learning algorithm is employed to optimize the sequence of visible space target. The reward function is designed based on the trace of Fisher information matrix and the rotation angle of optical axis which could make a synthetic balance between navigation accuracy and rotation cost. By setting the optimized pointing sequence to CNS/INS integrated navigation system, unintermittent celestial observation can be achieved to guarantee filtering performance with relatively low rotation cost, which has a certain value of practical engineering application. Comparative simulation experiments demonstrate the effectiveness of the proposed method in terms of navigation accuracy and rotation cost.

关键词： Optical filters Accuracy Costs Q-learning Navigation Filtering Space missions

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Event-Triggered Fault Detection and Isolation for Continuous-Time Piecewise Linear Systems

Event-Triggered Fault Detection and Isolation for Continuous...

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Chinese control and Decision Conference, CCDC

作者： Zongzheng Ma Xiao-Lei Wang School of Control Science and Engineering Dalian University of Technology Dalian China School of Mechatronic Engineering and Automation Shanghai University Shanghai China

ISBN: (数字)9798350387780

ISBN: (纸本)9798350387797

In this article, the fault detection and isolation (FDI) problem for continuous-time piecewise linear systems with sensor outage faults is investigated via event-triggered (ET) mechanisms. First, the output space is defined, and the design method of FDI filters is proposed, in which it is necessary to re-divide the regions of the output space in the design of isolation filters after sensor failures. Then, ET mechanisms are designed on the basis of the filters gains, and an ET FDI scheme is constructed. Different from the existing results, the influence of sensor faults on the output space is considered, and the gains of the designed filters in the absence of ET mechanisms are still applicable after the ET mechanisms are introduced, while the ones in the existing results need to be redesigned. Finally, a simulation example is presented to verify the effectiveness of the proposed method.

关键词： Linear systems Filters Fault detection Design methodology Aerospace electronics

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