一种克服机械共振的功率放大电路

A Power Amplifier Which Avoids the Harmful Resonance of Machine

许多驱动机械装置的马达的功放电路，由于受到机械共振频率的限制，不能高速运行．本电路采用陷波器，对于机械共振频率进行限制，保证驱动系统在高速运行时的稳定性．

The article describes a kind of Power Amplifier which contains a Servo Amplifier regulatingthe motor speed,and a Power output stage driving the motor. The circuit has an active notch filter,tuned to the resonant frequency of the machine to improve the stablity of higher speed operation of the machine.