The Experts below are selected from a list of 84687 Experts worldwide ranked by ideXlab platform
Bin Jiang - One of the best experts on this subject based on the ideXlab platform.
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robust nsv fault tolerant control system design against actuator faults and control surface damage under actuator dynamics
2015Co-Authors: Bin Jiang, Peng ShiAbstract:In this paper, a decentralized fault-tolerant control (FTC) system is proposed for near-Space Vehicle (NSV) attitude dynamics. First, NSV reentry attitude dyna mic models with an uncertainty, actuator failure models, and a control surface damage model are described. Next, a new local fault identification algorithm is proposed to iden tify different types of actuator faults, which is based on multiobserver techniques. The local fault identification is constituted by a fault detection observer, fault parameter identification observers, and a decision-making mechanism. Then, a global adaptive sliding-mode observer is used to design the command filter backstepping fault- tolerant controller. Our focus is on the accommodation for actuator faults, control surface damage, uncertainties, and the resulting disturbances of the NSV. Finally, simulation results are given to demonstrate the effectiveness and poten tial of the proposed FTC scheme.
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adaptive neural observer based backstepping fault tolerant control for near Space Vehicle under control effector damage
2014Co-Authors: Bin Jiang, Peng Shi, Chengchew LimAbstract:In this study, a theoretical framework for reconfigurable flight control is developed and applied to near Space Vehicle (NSV) attitude dynamics. First, NSV reentry mode is described. Second, an adaptive neural network observer is proposed, which ensures asymptotic convergence of the state observer error to zero under control effector damage and uncertainty. Next, a reconfigurable command-filter backstepping controller is designed based on the adaptive neural network observer. The authors focus is on the accommodation of the control effector damage, uncertainty and resulting disturbances. It is shown that the presented new control design results in asymptotic convergence of the attitude tracking error to zero. Finally, simulation results are given to demonstrate the effectiveness and potential of the proposed fault tolerant control scheme.
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decentralized asymptotic fault tolerant control of near Space Vehicle with high order actuator dynamics
2013Co-Authors: Bin Jiang, Peng Shi, Hongtao LiuAbstract:Abstract In this paper, a decentralized asymptotic fault tolerant control system is proposed for near Space Vehicle (NSV) attitude dynamics. First, NSV reentry mode is described, and the actuator failure model is developed whose behavior is described by high-order dynamics. Next, the multi-model based fault diagnosis and identification (FDI) algorithm is proposed for high order actuator dynamics, which can accurately diagnose and identify the fault in short time. Based on sliding mode, command filter, and backstepping technique, using information of FDI, a constrained fault tolerant control (FTC) is designed for reentry NSV. Finally, simulation results are given to demonstrate the effectiveness and potential of the proposed FTC scheme.
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a lyapunov method based multiple model adaptive actuator failure compensation scheme for control of near Space Vehicles
2013Co-Authors: Chang Tan, Gang Tao, Xuelian Yao, Bin JiangAbstract:In a recent paper [7], a multiple-model adaptive actuator failure compensation control scheme is proposed for the control of a near-Space Vehicle, using the gradient algorithm, to achieve fast and accurate actuator failures compensation. In this paper, a new multiple-model adaptive actuator failure compensation control scheme is developed for nonlinear systems motivated from a near-Space Vehicle control application. Such a design also employs multiple controllers based on multiple-model failure estimations and a control switching mechanism, based on finding the minimal performance cost index, to select the most appropriate controller. Different from [7], each estimator is designed based on the Lyapunov method, which ensures the system stability and desired tracking properties. Moreover, a smooth control are introduced to the multiple-model control system frame to avoid the discontinuity problem from the control switching, to widen the application of such design. Simulation results for a near-Space Vehicle dynamic model are presented to show the desired failure compensation performance.
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fuzzy logic system based adaptive fault tolerant control for near Space Vehicle attitude dynamics with actuator faults
2013Co-Authors: Qikun Shen, Bin Jiang, Vincent CocquempotAbstract:This paper addresses the problem of fault-tolerant control (FTC) for near-Space Vehicle (NSV) attitude dynamics with actuator faults, which is described by a Takagi-Sugeno (T-S) fuzzy model. First, a general actuator fault model that integrated varying bias and gain faults, which are assumed to be dependent on the system state, is proposed. Then, sliding mode observers (SMOs) are designed to provide a bank of residuals for fault detection and isolation. Based on Lyapunov stability theory, a novel fault diagnostic algorithm is proposed, which removes the classical assumption that the time derivative of the output error should be known. Further, for the two cases where the state is available or not, two accommodation schemes are proposed to compensate for the effect of the faults. These schemes do not need the condition that the bounds of the time derivative of the faults should be known. In addition, a sufficient condition for the existence of SMOs is derived according to Lyapunov stability theory. Finally, simulation results of NSV are presented to demonstrate the efficiency of the proposed FTC approach.
Peng Shi - One of the best experts on this subject based on the ideXlab platform.
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robust nsv fault tolerant control system design against actuator faults and control surface damage under actuator dynamics
2015Co-Authors: Bin Jiang, Peng ShiAbstract:In this paper, a decentralized fault-tolerant control (FTC) system is proposed for near-Space Vehicle (NSV) attitude dynamics. First, NSV reentry attitude dyna mic models with an uncertainty, actuator failure models, and a control surface damage model are described. Next, a new local fault identification algorithm is proposed to iden tify different types of actuator faults, which is based on multiobserver techniques. The local fault identification is constituted by a fault detection observer, fault parameter identification observers, and a decision-making mechanism. Then, a global adaptive sliding-mode observer is used to design the command filter backstepping fault- tolerant controller. Our focus is on the accommodation for actuator faults, control surface damage, uncertainties, and the resulting disturbances of the NSV. Finally, simulation results are given to demonstrate the effectiveness and poten tial of the proposed FTC scheme.
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adaptive neural observer based backstepping fault tolerant control for near Space Vehicle under control effector damage
2014Co-Authors: Bin Jiang, Peng Shi, Chengchew LimAbstract:In this study, a theoretical framework for reconfigurable flight control is developed and applied to near Space Vehicle (NSV) attitude dynamics. First, NSV reentry mode is described. Second, an adaptive neural network observer is proposed, which ensures asymptotic convergence of the state observer error to zero under control effector damage and uncertainty. Next, a reconfigurable command-filter backstepping controller is designed based on the adaptive neural network observer. The authors focus is on the accommodation of the control effector damage, uncertainty and resulting disturbances. It is shown that the presented new control design results in asymptotic convergence of the attitude tracking error to zero. Finally, simulation results are given to demonstrate the effectiveness and potential of the proposed fault tolerant control scheme.
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decentralized asymptotic fault tolerant control of near Space Vehicle with high order actuator dynamics
2013Co-Authors: Bin Jiang, Peng Shi, Hongtao LiuAbstract:Abstract In this paper, a decentralized asymptotic fault tolerant control system is proposed for near Space Vehicle (NSV) attitude dynamics. First, NSV reentry mode is described, and the actuator failure model is developed whose behavior is described by high-order dynamics. Next, the multi-model based fault diagnosis and identification (FDI) algorithm is proposed for high order actuator dynamics, which can accurately diagnose and identify the fault in short time. Based on sliding mode, command filter, and backstepping technique, using information of FDI, a constrained fault tolerant control (FTC) is designed for reentry NSV. Finally, simulation results are given to demonstrate the effectiveness and potential of the proposed FTC scheme.
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adaptive fault tolerant tracking control of near Space Vehicle using takagi sugeno fuzzy models
2010Co-Authors: Bin Jiang, Zhifeng Gao, Peng ShiAbstract:Based on the adaptive-control technique, this paper deals with the problem of fault-tolerant tracking control for near-Space-Vehicle (NSV) attitude dynamics. First, Takagi-Sugeno (T-S) fuzzy models are used to describe the NSV attitude dynamics; then, an actuator-fault model is developed. Next, an adaptive fault-tolerant tracking-control scheme is proposed based on the online estimation of actuator faults, in which a compensation control term is introduced in order to reduce the effect of actuator faults. Compared with some existing results of fault-tolerant control (FTC) in nonlinear systems, the technique presented in this paper is not dependent on fault detection and isolation (FDI) mechanism and is easy to implement in aeroSpace-engineering applications. Finally, simulation results are given to illustrate the effectiveness and potential of the proposed FTC scheme.
Sergey Surzhikov - One of the best experts on this subject based on the ideXlab platform.
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radiative gas dynamics of msl at angle of attack
2016Co-Authors: Sergey SurzhikovAbstract:Three-dimensional numerical simulation radiative gasdynamic (CFD/RadGD) models of physically and chemically nonequilibrium flow fields around Space Vehicle are used for investigation of radiative aerothermodynamics of the Mars Science Laboratory (MSL) entry, descent and landing (EDL) system under angles of attack for conditions of Martian entry [Edquist,K.T., Hollis, B.R., Johnston, C.O., Bose, D., White, T.R., and Mahzari, M., “Mars Science Laboratory Heat Shield Aerothermodynamics: Design and Reconstruction,” JSR, 2014. Vol.51. No.4]. The first part of the paper contains a description of the nonequilibrium radiative gasdynamic model which is used for numerical investigation of thermophysics of the Martian entry. The second part describes numerical simulation results obtained with the use of the three dimensional code NERAT(3D)+ASTEROID. Distinguishing feature of obtained data is the comparison of convective and radiative heating the MSL's surface from the forward stagnation line up to the backside. It is demonstrated that radiative heating of MSL Space Vehicle has its origin in presence of molecules CO2, CO, O2 in shock layer and in its wake. Calculations were performed with the use of multigroup spectral model taking into account most significant radiative mechanisms of absorption and emission. Last part of the paper contains comparison of calculated data with experimental data, presented in the paper mentioned above.
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radiative gasdynamics of re entry Space Vehicle of large size with superorbital velocity
2015Co-Authors: Sergey SurzhikovAbstract:Radiative and convective heating of a large scale Space Vehicle (SV) of segmental-conical shape with radius of blunting of aerodynamic heat shield of 528 cm is investigated numerically for the Earth entry trajectory with super-orbital initial velocity at zero angle of attack. Calculations were performed along entry trajectory with the use of multi-group spectral model taking into account most significant radiative mechanisms of absorption and emission. Computer platform NERAT(2D)+ASTEROID with different models of radiation heat transfer was used. The main goal of the study is investigation of contribution of atomic lines in the radiative heating of the super-orbital SV of large size in the non-equilibrium and quasi-equilibrium regimes of the flows.
Vincent Cocquempot - One of the best experts on this subject based on the ideXlab platform.
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fuzzy logic system based adaptive fault tolerant control for near Space Vehicle attitude dynamics with actuator faults
2013Co-Authors: Qikun Shen, Bin Jiang, Vincent CocquempotAbstract:This paper addresses the problem of fault-tolerant control (FTC) for near-Space Vehicle (NSV) attitude dynamics with actuator faults, which is described by a Takagi-Sugeno (T-S) fuzzy model. First, a general actuator fault model that integrated varying bias and gain faults, which are assumed to be dependent on the system state, is proposed. Then, sliding mode observers (SMOs) are designed to provide a bank of residuals for fault detection and isolation. Based on Lyapunov stability theory, a novel fault diagnostic algorithm is proposed, which removes the classical assumption that the time derivative of the output error should be known. Further, for the two cases where the state is available or not, two accommodation schemes are proposed to compensate for the effect of the faults. These schemes do not need the condition that the bounds of the time derivative of the faults should be known. In addition, a sufficient condition for the existence of SMOs is derived according to Lyapunov stability theory. Finally, simulation results of NSV are presented to demonstrate the efficiency of the proposed FTC approach.
Qikun Shen - One of the best experts on this subject based on the ideXlab platform.
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fuzzy logic system based adaptive fault tolerant control for near Space Vehicle attitude dynamics with actuator faults
2013Co-Authors: Qikun Shen, Bin Jiang, Vincent CocquempotAbstract:This paper addresses the problem of fault-tolerant control (FTC) for near-Space Vehicle (NSV) attitude dynamics with actuator faults, which is described by a Takagi-Sugeno (T-S) fuzzy model. First, a general actuator fault model that integrated varying bias and gain faults, which are assumed to be dependent on the system state, is proposed. Then, sliding mode observers (SMOs) are designed to provide a bank of residuals for fault detection and isolation. Based on Lyapunov stability theory, a novel fault diagnostic algorithm is proposed, which removes the classical assumption that the time derivative of the output error should be known. Further, for the two cases where the state is available or not, two accommodation schemes are proposed to compensate for the effect of the faults. These schemes do not need the condition that the bounds of the time derivative of the faults should be known. In addition, a sufficient condition for the existence of SMOs is derived according to Lyapunov stability theory. Finally, simulation results of NSV are presented to demonstrate the efficiency of the proposed FTC approach.
