This paper focuses on the H_∞ model reference tracking control for a switched linear parameter-varying(LPV)model representing an aero-engine. The switched LPV aeroengine model is built based on a family of linearized...This paper focuses on the H_∞ model reference tracking control for a switched linear parameter-varying(LPV)model representing an aero-engine. The switched LPV aeroengine model is built based on a family of linearized models.Multiple parameter-dependent Lyapunov functions technique is used to design a tracking control law for the desirable H_∞ tracking performance. A control synthesis condition is formulated in terms of the solvability of a matrix optimization problem.Simulation result on the aero-engine model shows the feasibility and validity of the switching tracking control scheme.展开更多
In this paper,a comparative study for kernel-PCA based linear parameter varying(LPV)model approximation of sufficiently nonlinear and reasonably practical systems is carried out.Linear matrix inequalities(LMIs)to be s...In this paper,a comparative study for kernel-PCA based linear parameter varying(LPV)model approximation of sufficiently nonlinear and reasonably practical systems is carried out.Linear matrix inequalities(LMIs)to be solved in LPV controller design process increase exponentially with the increase in a number of scheduling variables.Fifteen kernel functions are used to obtain the approximate LPV model of highly coupled nonlinear systems.An error to norm ratio of original and approximate LPV models is introduced as a measure of accuracy of the approximate LPV model.Simulation examples conclude the effectiveness of kernel-PCA for LPV model approximation as with the identification of accurate approximate LPV model,computation complexity involved in LPV controller design is decreased exponentially.展开更多
对平面两关节直接驱动机器人 ,提出一种同时将闭环极点配置到满足动态响应区域内的变增益 L PV鲁棒 H∞ 控制器设计新方法。利用 L PV的凸分解方法 ,将机器人模型化为具有凸多面体结构的L PV模型 ,然后利用 L MI技术对凸多面体各顶点分...对平面两关节直接驱动机器人 ,提出一种同时将闭环极点配置到满足动态响应区域内的变增益 L PV鲁棒 H∞ 控制器设计新方法。利用 L PV的凸分解方法 ,将机器人模型化为具有凸多面体结构的L PV模型 ,然后利用 L MI技术对凸多面体各顶点分别设计满足 H∞ 性能和闭环极点配置的反馈增益 ,再利用各顶点设计的反馈控制器综合得到具有凸多面体结构的 L PV控制器。仿真结果验证了该控制器可使机器人随关节位置变化始终具有良好的控制性能。展开更多
基金supported by the National Natural Science Foundation of China(61304058,61233002)IAPI Fundamental Research Funds(2013ZCX03-01)
文摘This paper focuses on the H_∞ model reference tracking control for a switched linear parameter-varying(LPV)model representing an aero-engine. The switched LPV aeroengine model is built based on a family of linearized models.Multiple parameter-dependent Lyapunov functions technique is used to design a tracking control law for the desirable H_∞ tracking performance. A control synthesis condition is formulated in terms of the solvability of a matrix optimization problem.Simulation result on the aero-engine model shows the feasibility and validity of the switching tracking control scheme.
文摘In this paper,a comparative study for kernel-PCA based linear parameter varying(LPV)model approximation of sufficiently nonlinear and reasonably practical systems is carried out.Linear matrix inequalities(LMIs)to be solved in LPV controller design process increase exponentially with the increase in a number of scheduling variables.Fifteen kernel functions are used to obtain the approximate LPV model of highly coupled nonlinear systems.An error to norm ratio of original and approximate LPV models is introduced as a measure of accuracy of the approximate LPV model.Simulation examples conclude the effectiveness of kernel-PCA for LPV model approximation as with the identification of accurate approximate LPV model,computation complexity involved in LPV controller design is decreased exponentially.
文摘对平面两关节直接驱动机器人 ,提出一种同时将闭环极点配置到满足动态响应区域内的变增益 L PV鲁棒 H∞ 控制器设计新方法。利用 L PV的凸分解方法 ,将机器人模型化为具有凸多面体结构的L PV模型 ,然后利用 L MI技术对凸多面体各顶点分别设计满足 H∞ 性能和闭环极点配置的反馈增益 ,再利用各顶点设计的反馈控制器综合得到具有凸多面体结构的 L PV控制器。仿真结果验证了该控制器可使机器人随关节位置变化始终具有良好的控制性能。
