非线性自抗扰控制对偶然测量误差的抑制作用

The Effect of Non-Linear Active Disturbance Rejection Control in Suppressing Accidental Measuring Errors

金刚石超精密切削是加工微结构表面的有效方法,其关键技术是快速刀具伺服系统(FTS),控制器性能是FTS的一个重要性能指标。针对电磁驱动原理的快速刀具伺服系统,建立执行机构简化的传递函数模型,引入自抗扰控制器作为快速刀具伺服系统的控制器并介绍自抗扰控制器参数的整定。最后采用非线性自抗扰控制技术,并利用MATLAB仿真非线性自抗扰控制(NLADRC)和线性自抗扰控制(LADRC)对偶然测量误差的抑制作用,得出结论为非线性自抗扰控制相比线性自抗扰控制可以更好的抑制偶然测量误差造成的不利影响。

Diamond ultra-precision turning is suitable for machining micro-structure surfaces.A fast tool servo is crucial for machining micro-structure surfaces and one of its key properties is the controller＇s performances.This paper creates the simplified transfer function model and introduces active disturbance rejection controller and the corresponding parameter setting for the electromagnetic fast tool servo.At last,the design of a precision non-linear active disturbance rejection controller is adopted.The effects of linear ADRC and non-linear ADRC in suppressing accidental measuring errors are both simulated using MATLAB.The conclusion is that NLADRC can suppress the accidental measuring errors better.