| 摘要 |
PURPOSE:To improve the stability of a motor by forming a speed control signal in response to the produce the difference of an actual speed and a reference speed, and a loop gain, and stepwisely reducing the loop gain in response to the convergence of the actual speed to the reference speed. CONSTITUTION:A pulse signal of an encoder 2 which is interlocked to a motor 1 is inputted to an interrupt generator 4 to a microcomputer 6, a stationary frequency pulse for measuring the time interval of a rise of the pulse signal of the encoder 2 is inputted to the microcomputer 6, and the motor 1 is controlled by the output. A signal in response to the product of the error between the detecting speed of the motor and the reference speed, and a loop gain of a closed loop control system is used as a speed control signal, and when the loop gain is started, it is set to the maximum value to stepwisely reduce in response to the convergence to the reference speed of the detecting speed. Therefore, the transient response characteristic is improved to improve the stability. |
