PWM控制节能式线切割脉冲电源补偿网络研究

Research on the Compensating Net of Pulse Generator with PWM Control for WEDM

在分析脉冲电源放电电流闭环控制子电路的基础上,利用状态空间平均法建立了脉冲电源系统的开环传递函数。对脉冲电源电流采样电路补偿网络进行了PID设计,从而改善了脉冲电源放电电流的动态特性,通过实际应用,证明该脉冲电源的电能利用率可以达到70%左右,满足了脉冲电源的加工需要。

Base on analyzing the sub circuit of close loop control for discharging current of pulse generator, the transfer function of open loop is built by using the state-space averaging method. In addition, the PID design of compensating net of pulse generator is made, it improves the dynamic character of discharging current, meets the machining demand. The practice proves that pulse generator can use energy above 70%, which satisfy the need of matching.