Drive circuit of vibration wave motor

摘要: PURPOSE:To improve a torque at starting time without decreasing the drive efficiency of vibration wave motor and to reduce variation in rotating speed by controlling power source voltage response detected output means for detecting movable element motor. CONSTITUTION:Electromechanical energy converters 1a, 1b arranged fixedly on vibrator are energized amplifiers 16, 17. A pulse width modulator 9 controls applied from variable 8 The irregular rotation is prevented responding control unit