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Adaptive Backstepping slide mode control of Pneumatic Position Servo System

Chinese Journal of Mechanical Engineering 2016年第5期29卷 1003-1009页

作者： REN Haipeng FAN Juntao Shaanxi Key Laboratory Complex System control and Intelligent Information Processing Xi'an University of Technology

With the price decreasing of the pneumatic proportional valve and the high performance micro controller, the simple structure and high tracking performance pneumatic servo system demonstrates more application potential in many fields. However, most existing control methods with high tracking performance need to know the model information and to use pressure sensor. This limits the application of the pneumatic servo system. An adaptive backstepping slide mode control method is proposed for pneumatic position servo system. The proposed method designs adaptive slide mode controller using backstepping design technique. The controller parameter adaptive law is derived from Lyapunov analysis to guarantee the stability of the system. A theorem is testified to show that the state of closed-loop system is uniformly bounded, and the closed-loop system is stable. The advantages of the proposed method include that system dynamic model parameters are not required for the controller design, uncertain parameters bounds are not need, and the bulk and expensive pressure sensor is not needed as well. Experimental performance, as compared with some existing methods. results show that the designed controller can achieve better tracking

关键词： pneumatic position servo system adaptive backstepping design slide mode control uncertain parameter tracking accuracy

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Three-dimensional nonlinear coupling guidance for hypersonic vehicle in dive phase

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Science China(Technological Sciences) 2014年第9期57卷 1824-1833页

作者： ZHU JianWen LIU LuHua TANG GuoJian BAO WeiMin College of Aerospace Science and Engineering National University of Defense Technology China Aerospace Science and Technology Corporation

Three-dimensional(3D)nonlinear diving guidance strategy considering the coupling between longitudinal and lateral motions for hypersonic vehicle is investigated in this *** constructs the complete nonlinear coupling motion equation without any approximations based on diving relative motion relationship directly,and converts it into linear state space equation with the same relative degree by feedback *** the linear equation,slide mode control with strong robustness is employed to design the guidance law,and 3D diving guidance law which can satisfy terminal impact point and falling angle constraints with high precision is obtained by substituting the previous control law into the origin nonlinear guidance ***,regarding lateral overload as the standard,hybrid control strategy which can take full advantage of the excellent characters of both bank-to-turn(BTT)and skid-to-turn(STT)controls is designed to improve the guidance accuracy ***,the results of CAV-H vehicle guidance test show that the algorithm can realize high accuracy guidance even if serious motion coupling exists,and has strong robustness to the path disturbances and navigation errors as well.

关键词： hypersonic vehicle 3D diving guidance coupling feedback linearization slide mode control hybrid control strategy

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Single-point preview driver and non-linear tyre model-based direct yaw moment control method for vehicles 36

Single-point preview driver and non-linear tyre model-based ...

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第36届中国控制会议

作者： Guoqiang Huang Weida Wang Wenjun Chen Long He School of Mechanical Engineering Beijing Institute of Technology The Fourth Branch Company Inner Mongolia First Machinery Group Co.Ltd PLA Military Economics Academy

ISBN: (纸本)9781538629185

Vehicle direct yaw moment control can significantly improve vehicle driving stability and *** closed-loop simulation of man-vehicle-road based on the driver model is valuable for the evaluation of control *** this paper,the co-simulation method based on the single-point preview driver model and veDYNA dynamics software is studied.A direct yaw moment control algorithm based on sliding-mode variable structure control theory is proposed,and the Dugoff tyre model is *** on the non-linear tyre model,the target slip rate is *** simulated test of the single-shift line condition on a high-,and low-adhesion road was carried out by MATLAB

关键词： Direct yaw-moment control driver model single-point preview slide mode control non-linear tyre model

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