摘要
压电陶瓷的迟滞非线性特性限制了其在高精度定位领域的应用,针对这一问题设计了适用于工程实践的方法。采用多项式模型拟合压电陶瓷的迟滞特性曲线,加入前馈逆模型实现压电陶瓷的线性化,将残余非线性看作一种有界干扰,利用干扰观测器的特性进行补偿,最终采用逆模型前馈和PID反馈的复合控制算法实现压电陶瓷的高精度运动控制。试验结果表明：该方法可用于实际控制系统,并且具有较好的动态性能,可有效的补偿压电陶瓷的迟滞非线性。
The hysteresis nonlinearity of piezoceramics restricts its application in the field of high-precision positioning.A method suitable for engineering is designed to solve this problem.Firstly,fitting the hysteresis curve of piezoceramic with polynomial model.Secondly,realizing the linear piezoceramic to use feedforward inverse model,then the residual nonlinear as a bounded disturbance,is compensated by disturbance observer（DOB）.Finally,the realization of high precision motion control is used the compound control including feedforward of inverse model and feedback of PID.The test results show that the method is practical and has better dynamic performance,which is effective in compensating the piezoceramic hysteresis nonlinearity.
作者
王丽娜
Wang Lina(School of Electrical and Information,Changchun University of Architecture Civil Engineering College,Changchun 130604,China)
出处
《国外电子测量技术》
2018年第6期89-93,共5页
Foreign Electronic Measurement Technology
