| 摘要 |
PURPOSE:To provide a simple speed controller for a brushless motor which can control a rotating speed without generating kick back noise. CONSTITUTION:The speed controller for a brushless motor comprises the motor 1, motor driving means 2 for generating a torque in the motor, speed control means 3 for so operating as to bring a rotating speed of the motor into coincidence with a preset rotating speed, integrating means 4 for controlling a magnitude and a direction of a torque by an operation of the control means, and a current control amplifier 47 for so operating as to control an amplitude and a direction of a current to be supplied to the motor by the driving means by an operation of the integrating means. Further, it is so constructed that, when the direction of the torque generated in the motor is switched, its switching operation is smoothly conducted by an integrating constant of the integrating means. |
