电液负载模拟器的二次型最优控制算法  

A Quadratic Optimum Control Algorithm of the Electro Hydraulic Load Simulator

作　　者：王纪森[1] 彭博[1] 冀杰[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《计算机仿真》2010年第2期80-83,273,共5页Computer Simulation

摘　　要：电液负载模拟器属于被动式加载系统,受载对象的自主运动和加载装置的运动相互耦合,所产生的位置扰动会引起多余力。为抑制多余力建立了电液负载模拟器的状态空间模型,利用线性二次型最优控制理论设计了最优控制算法,算法具有最优状态反馈、最优前馈补偿和外扰补偿,使得电液负载模拟器的性能有明显提高。电液负载模拟器的仿真计算结果表明,利用最优控制算法设计的电液负载模拟器较好地抑制了多余力,从而较好地跟踪力指令。The electro hydraulic load simulator belongs to the passive loading system. The location disturbance which may cause the surplus torque arose the coupling between the active movement of the forced object and the loading devices. The state space model of the electro hydraulic load simulator is established. A linear quadratic optimum control algorithm is brought in and the system achieves the optimum state feedback, the optimum forward compensation and the optimum outer disturbed compensation. The simulation result shows that the electro hydraulic load simulator using the optimum control algorithm can well suppress the surplus torque and tracked the instruction.

关 键 词：电液加载 状态空间 最优控制 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置]