| 摘要 |
PURPOSE:To ensure synchronization, by inserting synchronizing signal composed of a definite time-H value and -L value into two PWM signals time-wise continuing in a servo driver system corresponding to the length of an H-state within a definite period of the PWM signal. CONSTITUTION:A PWM signal is imparted from a controller 1 to a servo driver 2. The servo driver 2 drives a motor 3 corresponding to the length of an H-state included in a definite period of the PWM signal. A sensor 4 detects the displacement of the motor 3 and feeds it back to the controller 1. The synchronizing pulse Sy of H- and L-states is inserted into two PWM signals that continue time-wise given to the servo driver 2 from the controller 1 in a definite time period tH and tL (tH=tL). Thus, the rise of pulse never fails to exist within the definite time period T in sequence at all times and the motor is assuredly synchronized on the side of the servo driver. |
