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一类不确定非线性系统的最优控制 被引量:6
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作者 许天舒 史小平 《哈尔滨理工大学学报》 CAS 2000年第6期82-85,共4页
应用非线性系统精确线性化方法,将一类满足一定条件的不确定非线性系统最优控制问题变换成一种参数不确定线性系统的二次型最优调节器问题,从而求得原系统的最优控制.设计例子及仿真验证了本文方法的正确性.
关键词 不确定线性系统 最优控制 精确线性 参数不确定线性系统 二次型最优调书器
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ROBUST CONTROL OF A CLASS OF NONLINEAR SYSTEM WITH TIME-VARYING PAR AMETRIC UNCERTAINTIES
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作者 朱永红 姜长生 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2003年第1期97-102,共6页
A class of triangular non li near system with disturbances which has unknown multiplicative time varying par ametric uncertainties in each virtual control is treated by a backstepping techn ique. The controller desig... A class of triangular non li near system with disturbances which has unknown multiplicative time varying par ametric uncertainties in each virtual control is treated by a backstepping techn ique. The controller designed for all admissible uncertainties can guarantee tha t all states of its closed loop system are uniformly bounded. The robust contro ller design algorithm and a sufficient condition of the system stability are giv en. In addition, the closed loop system has an ISS property when the multiplica tive time varying parametric uncertainties are viewed as inputs to the system. Thus, this design provides a way to prevent a destabilizing effect of the multip licative time varying parametric uncertainties. Finally, simulational example i s given and simulational result shows that the controller exhibits effectiveness and excellent robustness. 展开更多
关键词 nonlinear system robus t control backstepping design
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Sliding mode identifier for parameter uncertain nonlinear dynamic systems with nonlinear input 被引量:2
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作者 张克勤 庄开宇 +2 位作者 苏宏业 褚健 高红 《Journal of Zhejiang University Science》 CSCD 2002年第4期426-430,共5页
This paper presents a sliding mode (SM) based identifier to deal with the parameter identification problem for a class of parameter uncertain nonlinear dynamic systems with input nonlinearity. A sliding mode controlle... This paper presents a sliding mode (SM) based identifier to deal with the parameter identification problem for a class of parameter uncertain nonlinear dynamic systems with input nonlinearity. A sliding mode controller (SMC) is used to ensure the global reaching condition of the sliding mode for the nonlinear system; an identifier is designed to identify the uncertain parameter of the nonlinear system. A numerical example is studied to show the feasibility of the SM controller and the asymptotical convergence of the identifier. 展开更多
关键词 Nonlinear system Sliding mode IDENTIFIER Input nonlinearity
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Gain-scheduling model predictive control for unmanned airship with LPV system description 被引量:1
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作者 Liu Cui Li Chen Dengping Duan 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2015年第5期1043-1051,共9页
This paper presents a gain-scheduling model predictive control(MPC) for linear parameter varying(LPV) systems subject to actuator saturation. The proposed gain-scheduling MPC algorithm is then applied to the lateral c... This paper presents a gain-scheduling model predictive control(MPC) for linear parameter varying(LPV) systems subject to actuator saturation. The proposed gain-scheduling MPC algorithm is then applied to the lateral control of unmanned airship.The unmanned airship is modeled by an LPV-type system and transformed into a polytopic uncertain description with actuator saturation. By introducing a parameter-dependent state feedback law, the set invariance condition of the polytopic uncertain system is identified. Based on the invariant set, the gain-scheduling MPC controller is presented by solving a linear matrix inequality(LMI) optimization problem. The proposed gain-scheduling MPC algorithm is demonstrated by simulating on the unmanned airship system. 展开更多
关键词 unmanned airship gain-scheduling model predictivecontrol polytopic uncertain actuator saturated systems
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