摘要
针对电液负载模拟器存在多余力,且多余力严重影响加载精确度的问题,同时为了提高加载系统的控制性能,介绍了电液负载模拟器的工作原理,对舵机系统、加载系统分别进行建模,建立整个电液负载模拟器系统的控制模型。设计了结构补偿环节,提出电液负载模拟器多余力抑制的控制方案,从理论上结构补偿环节可以实现对系统全部补偿和抑制多余力。对采用结构补偿环节前后的模型进行仿真分析和实验研究,结果表明采用结构补偿环节能使多余力大幅度减小,动态加载精确度明显提高,验证了控制方案的正确性和有效性。
Aiming at the superfluous force existing in the electro-hydraulic load simulator and the problem of the superfluous force influencing the load precision seriously, in order to improve the control performance of the load system, the work principle of the electro-hydraulic load simulator was introduced, and after building the control model of the rudder system and the load system, the whole electro-hydraulic load simulator control model was built. The structure compensation unit was designed and the control scheme of eliminating the superfluous force of the electro-hydraulic load simulator was proposed. The structure compensation unit could compensate the whole system entirely and could eliminate the superfluous force well theoretically. The model with the structure compensation unit and the model without the structure compensation unit were studied by simulation and experiment. The results indicate that the structure compensation unit can reduce the superfluous force greatly, and indicate that the dynamic load precision is improved obviously. The study of simulation and experiment verifies the efficiency and correctness of the control scheme.
出处
《电机与控制学报》
EI
CSCD
北大核心
2009年第4期586-591,共6页
Electric Machines and Control
基金
教育部博士点基金(20050214001)
关键词
电液负载模拟器
控制模型
被动加载
结构补偿环节
多余力
electro-hydraulic load simulators
control model
passive loading
structure compensation unit
superfluous force
