门机直流可逆PWM控制

<title>DC PWM Reversible Control for Machine Door

采用80C196单片机和全控器件IGBT,构成直流双极式PWM电梯门机可逆调速系统,通过回馈制动降低能耗,提高调速性能和定位精度。经实际使用效果良好。

<Abstrcat>A bipolar DC PWM reversible speedadjusting system is constituted by 80C196 single chip computer for elevator door machine.Reversible bridge of the main circuit is composed with IGBT component,which reduces energy consuming,improves speedadjusting performance and orientation precision by regenerative braking.The fine applying result is obtained in practice.\;