Fast Tool Servo Control Method for Non-axisymmetric Surface Part Machining Based on Interference Observer
Non-axisymmetric surface parts have complex surface shapes,and it is difficult to deal with the equivalent interference in the process of tool control,so the machining accuracy is not high.To solve these problems,a fast tool servo control method for machining non-axisymmetric surface parts based on interference observer is proposed.Based on the dynamic behavior analysis results of the fast servo tool,the disturbance observer calculates the equivalent dis-turbance and obtains the disturbance compensation.Based on the disturbance compensation and dynamic behavior analysis,the equivalent control law and the switching control law are designed respectively,and the rapid tool servo control for the machining of non-axismetrical surface parts is realized by the incremental sliding mode controller.The results show that the tool servo control boundary and monitoring boundary are highly coincident,and the tracking off-set value is±0.02 μm,and the fluctuation range is relatively small.This shows that the method has higher machining accuracy and tracking stability.
interference observernon-axisymmetric surface partsdynamic behavior analysisquick cutting toolsservo control method
万方数据
维普
