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Adaptive fuzzy backstepping control for attitude stabilization of flexible spacecraft with signal quantization and actuator faults

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Science China(Information Sciences) 2021年第5期64卷 135-150页

作者： Qiuhong LIU Ming LIU Guangren DUAN Research Institute of Intelligent Control Systems Harbin Institute of Technology Research Center of Satellite Technology Harbin Institute of Technology Center for Control Theory and Guidance Technology Harbin Institute of Technology

In this study, the fault-tolerant attitude control of flexible spacecraft is investigated over digital communication channels, where a uniform quantizer is considered with respect to the sensor signals and controller indexes. Further, an adaptive fuzzy backstepping control strategy has been developed for the considered attitude stabilization issue, where the adaptive fuzzy logic method is used to approximate the rigid-flexible coupled nonlinearity of the spacecraft. In this design, the online adjusting quantizer parameters are injected into the controller gains to simultaneously compensate for the quantization errors and timevarying actuator faults. In the proposed control method, the attitude stabilization task is achieved in the presence of external disturbances, time-varying actuator faults, and signal quantization. Finally, the practical examples are compared to demonstrate the effectiveness of the proposed control strategy.

关键词： fault-tolerant control attitude stabilization signal quantization adaptive fuzzy control backstepping control

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Actuator fault sliding mode observer design with signal quantization

Actuator fault sliding mode observer design with signal quan...

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第36届中国控制会议

作者： Yongjun Cao Ming Liu Zhuoshi Li South China Robotics Innovation Research Institute Research Center of Satellite Technology Harbin Institute of Technology

ISBN: (纸本)9781538629185

In this paper,the design problem of sliding mode observer is addressed for a class of linear continuous-time systems with actuator faults and limited data communication.A new descriptor sliding mode observer approach is developed to solve this design issue,where a discontinuous input is constructed to reject actuator faults.It is proved that the lower bound on the density of the quantizer is 1/3,under which the quantization errors could be compensated completely by the switching term of the observer.Based on the proposed observer method,the system state vector can effectively track the state estimator and quantization errors simultaneously.Finally,a practical example is provided to show the effectiveness of the presented observer design method.

关键词： State estimation signal quantization Sliding mode observer Actuator fault

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Adaptive dynamic programming-based fault-tolerant attitude control for flexible spacecraft with limited wireless resources

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Science China(Information Sciences) 2023年第10期66卷 213-228页

作者： Ming LIU Qiuhong LIU Lixian ZHANG Guangren DUAN Xibin CAO School of Astronautics Harbin Institute of Technology Beijing Institute of Control Engineering

This paper investigates the attitude control for flexible spacecraft subject to actuator faults and limited onboard communication resources. The control torque quantization scheme is considered between the controller and actuator to reduce the communication burden on the spacecraft. An integral sliding mode control method is designed to stabilize the closed-loop attitude control system and ensure the near-optimal performance of the sliding motion. First, an iterative learning observer scheme is employed to reconstruct the actuator faults and the unknown nonlinear flexible dynamics. Second, an integral sliding surface is combined with the backstepping control method to resolve the time-varying characterization of the closed system. Third, a combination of the adaptive dynamic programming technique and the adaptive single critic neural network approximation is employed to examine the optimal control policy. Finally, the efficacy of the proposed spacecraft attitude control method is demonstrated via a simulation.

关键词： flexible spacecraft fault-tolerant attitude control signal quantization adaptive dynamic programming neural network learning

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Networked H∞ filter with bounded packet dropouts 25th

Networked H∞ filter with bounded packet dropouts

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第25届中国控制与决策会议

作者： Wei-Wei Che Xiao-Zheng Jin the Key Laboratory of Manufacturing Industrial Integrated Automation Shenyang University

ISBN: (纸本)9781467355339

This paper investigates the quantized H∞ filtering problem for a class of networked systems. The networked system is modeled as a Markov system with employing new transition probabilities matrix. And the mode-dependent H∞ filter is studied. The logarithmic quantizer is considered and the quantzied measurement signals are dealt with by utilizing the sector bound method, in which the quantization error is treated as sector-bounded uncertainty. By using the quadratic separator lemma, a new method is proposed to deal with the sector-bounded uncertainty and further to give convex sufficient conditions for designing the quantized and modedependent H∞ filter in terms of LMIs. The resulting design guarantees the augmented system stochastically asymptotically stable and the H∞ attenuation level less than a prescribed level. A numerical example is given to illustrate the the effectiveness of the proposed method.

关键词： Networked systems signal quantization Markov dropout H∞ filtering LMI.

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Fault Detection in Finite Frequency Domain for Networked Multi-Rate Systems under Stochastic Communication Protocol

Fault Detection in Finite Frequency Domain for Networked Mul...

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第40届中国控制会议

作者： Yuxin Han Li Sheng College of Control Science and Engineering China University of Petroleum （East China）

This paper deals with the problem of fault detection（FD） in finite frequency domain for networked multi-rate systems（NMSs） with logarithmic quantization under the stochastic communication protocol（SCP）.First,consider a class of NMSs where the output sampling period is an integer multiple of the input.To reduce the communication burden of the network and the occurrence of data collisions,the quantized measurement outputs are transmitted via the SCP,which is governed by a discretetime Markov chain.NMSs are converted into networked single-rate systems by using the lifting technique,and then the residual system model for the filter-based FD is established.The purpose of this paper is to design a FD filter satisfying H∞ disturbance attenuation level in a restricted frequency domain.Then,the sufficient conditions for this problem are derived by using the generalized Kalman-Yakubovich-Popov（GKYP） lemma and expressed in the form of linear matrix inequalities（LMIs）.Finally,an example is employed to illustrate the effectiveness of the proposed method.

关键词： Fault Detection Finite Frequency Domain Multi-rate Systems signal quantization Stochastic Communication Protocol

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H∞ Filtering with Logarithmic Quantizer

H∞ Filtering with Logarithmic Quantizer

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第25届中国控制与决策会议

作者： Wei-Wei Che the Key Laboratory of Manufacturing Industrial Integrated Automation Shenyang University

ISBN: (纸本)9781467355339

In this paper, the H∞ filtering problem with signal quantization is considered. The logarithmic quantizer is considered and the quantzied measurement signals are dealt with by utilizing the sector bound method, in which the quantization error is treated as sector-bounded uncertainty. By using the vertex separator, a new method is proposed to deal with the sector-bounded uncertainty and further to give convex sufficient conditions for designing the quantized H∞ filter in terms of LMIs. The resulting design guarantees the augmented system asymptotically stable and the H∞ attenuation level less than a prescribed level. A numerical example is given to illustrate the the effectiveness of the proposed method.

关键词： Networked systems H∞ filtering signal quantization Vertex Separator LMI.

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