数控切削性能的Fuzzy-PID控制算法的设计与仿真  

Design and Simulation of Fuzzy-PID Control Algorithm for NC Machinability

作　　者：肖顺根[1] 宋萌萌[1] 钟小倩[2] 

机构地区：[1]宁德师范学院物理与电气工程系,福建宁德352100 [2]江西理工大学机电工程学院,江西赣州341000

出　　处：《组合机床与自动化加工技术》2011年第12期73-77,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：福建省教育厅科技项目(JB10185);宁德师范学院引进人才资助项目(2009Y004)

摘　　要：随着零件加工精度的日益提高及外界干扰因素的不断增加,传统PID控制的数控加工过程已不能满足目前切削性能的需求,如何使数控机床在加工中仍然保持优越的切削性能是目前制造领域研究的热点问题之一。根据数控切削加工系统的组成结构,建立了切削系统的数学模型。通过分析单位阶跃响应的误差曲线,归纳了PID参数自调整的模糊规则,并完成了一套与切削系统相匹配的Fuzzy-PID算法的设计。经动态性能、抗干扰性能和鲁棒性能的仿真实验分析,结果表明与传统PID算法相比,Fuzzy-PID算法应用于切削系统中具有更良好的品质。As the increase of machining accuracy and external interference factors,the NC cutting process of traditional PID control has been unable to meet the present needs,how to keep the superior machinability of NC machine is a hotspot of manufacturing now adays.According to the composition of NC machining systems,a mathematical model of cutting system w as established.The fuzzy rules of selftuning PID parameters w ere concluded by analyzing the unit step response error curve,and so a FuzzyPID algorithm matched w as designed for cutting system.After simulation experiment of dynamic property,anti-interference property and robust property,the simulation result show s,compared w ith traditional PID,Fuzzy-PID algorithm applied to cutting system reaches better quality.

关 键 词：FUZZY-PID算法 传统PID 切削性能 MATLAB/simulation 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]