电磁调速电动机双速控制电路的改进

Improvement of double velocity control circuit of electro-magnetic speed-governing motor

分析了电机控制回路的控制原理 ,指出了原控制电路中存在的不安全、不节能等实际问题 。

Analyses the control principles of the motor control circuit,points out the problems existed in the original control circuit that is neither safe nor energy saving,also presents the improved control circuit in detail.