【摘要】 为了有效控制电解加工间隙,提高加工精度,以六维力和加工电流为模糊控制器输入的原始数据,结合在线检测加工间隙技术,得到测试间隙;设计控制加工间隙的二输入一输出的模糊控制器,把测试间隙与初始设定间隙形成偏差和偏差的变化量,作为模糊控制器的输入,机床主轴进给速度作为模糊控制器输出;在Matlab的Simulink模块中,通过对电解加工系统和模糊控制器组成的联合模型进行仿真试验,并调整加工间隙的初始设定值,得到结论:模糊控制电解加工过程稳定,鲁棒性好,加工过程很快达到平衡状态;在0.2~0.7 mm的加工间隙范围,随着加工间隙的增大,模糊控制器的超调量减小,控制效果好。更多还原

【Abstract】 To effectively control interelectrode gap of electrochemical machining(ECM),the 6-D forces and machining current are used as primary data of fuzzy controller including two inputs and one output.The interelectrode gap from on-line monitoring and the initial setting gap compose deviation and deviation variety,and they are acted as input parameters of the fuzzy controller,and the output of the fuzzy controller is velocity of machine principal axis. A simulation model consisting of the fuzzy controller and ECM system is established,and the initial setting gap is modified in the model.Simulation result based on the Simulink module of Matlab shows that the machining process is steady and robust,and machining process arrives at balance status quickly.With increasing of interelectrode gap,the overshoot of fuzzy control system decreases when interelectrode gap is within 0.2～0.7 mm.更多还原