振动与力加载耦合的电液伺服控制

发布时间：2018-11-19 15:15

【摘要】：振动与力加载耦合的电液伺服系统具有集成模拟被测试件在振动与加载耦合工况下动态性能的优势,针对振动模拟对力加载系统产生的干扰多余力问题,提出了一种力干扰观测器,以提高加载力跟踪精度.首先,建立了振动与力加载耦合的电液伺服控制系统的数学仿真模型;其次,利用递推增广最小二乘算法辨识了力加载系统闭环传递函数;然后,利用零相差跟踪技术设计了力加载系统的前馈逆模型;最后,设计了力干扰观测器,搭建了水平向振动与力加载耦合的电液伺服系统实验台,仿真和实验验证了提出的力干扰观测器可有效降低由于振动扰动而产生的干扰多余力.
[Abstract]:The electro-hydraulic servo system coupled with vibration and force loading has the advantage of integrated simulation of dynamic performance of the tested parts under the condition of vibration and loading coupling. In view of the interference of the vibration simulation to the force loading system, there are many Yu Li problems. A force disturbance observer is proposed to improve the tracking accuracy of loading force. Firstly, the mathematical simulation model of electro-hydraulic servo control system coupled with vibration and force loading is established. Secondly, the closed-loop transfer function of force loading system is identified by recursive augmented least square algorithm. Then, the feedforward and inverse model of the force loading system is designed by using zero phase difference tracking technology. Finally, a force disturbance observer is designed, and an electro-hydraulic servo system with horizontal vibration coupled with force loading is built. The simulation and experiments show that the proposed force disturbance observer can effectively reduce the disturbance caused by vibration disturbance of multiple Yu Li.
【作者单位】：中国矿业大学机电工程学院;中国矿业大学江苏省矿山机电装备重点实验室;郑州机电工程研究所;
【基金】：国家自然科学基金项目(51575511) 国家重点基础研究发展计划项目(“973”计划)(2014CB049404) 长江学者和创新团队发展计划项目(IRT_16R68) 江苏高校优势学科建设工程项目资助~~
【分类号】：TP273

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