电液位置伺服系统模糊速度补偿μ复合控制
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中国博士后科学基金资助项目(2012M510982)


Fuzzy Velocity Compensation and μ Control Strategy of Electro-hydraulic Position Servo Control
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    摘要:

    针对变刚度电液位置伺服系统在快速定位控制中存在的超调现象,考虑负载刚度对位置伺服系统的影响,提出了模糊速度补偿μ复合控制策略,给出复合控制策略的工作原理,导出速度流量补偿模型。设计模糊速度补偿器及鲁棒μ控制器,实现了伺服缸无扰速度补偿及负载刚度摄动的抑制,应用Matlab、AMESim联合仿真和半实物仿真平台分别进行复合控制策略验证,仿真及实验结果表明,μ控制器有效抑制了负载刚度摄动,而速度补偿的引入使系统在快速性条件下实现了位置的精确定位控制,验证了所提控制策略的有效性。

    Abstract:

    According to the position overshoot of fast positioning for electro-hydraulic position control system, a composite control strategy combining fuzzy velocity compensation with robust μ control was put forward, considering the influence of variable stiffness on position control system. The working principle of the composite strategy was given and the flow compensation equation was derived, and the velocity compensation without disturbance and the inhibiting of stiffness perturbation were achieved by using the controller combining fuzzy velocity compensation and robust μ controller. The composite strategy was verified by co-simulation of Matlab & AMESim and semi-physical simulation platform respectively, and the results of the simulation and experiment showed that the electro-hydraulic position servo system with robust μ controller could effectively inhibit parameter perturbation. The rapid positioning control was realized after introducing the velocity v compensation control loop, which verified the efficiency of the method presented through simulations.

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孙桂涛,邵俊鹏,王晓晶.电液位置伺服系统模糊速度补偿μ复合控制[J].农业机械学报,2014,45(8):328-333.

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  • 收稿日期:2013-07-25
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  • 在线发布日期: 2014-08-10
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