| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a command signal 15 vibrates irregularly even when a prescribed value for control is not vibrational, and a serve-motor 8 does not rotate smoothly, so that ball screws for driving a moving member and ball nuts are vibrated by the servo-motor 8 to cause the generation of noise and the shortening of a life. SOLUTION: In a method for controlling the servo-motor in an injection molding machine comprising servo-amplifier 6 which outputs a driving current 16 based on the command signal 15 sent from a controller 1 and the servo-motor 8 which is driven by the driving current 16 and has an encoder 9, the encoder 9 sends rotational angle data 13 and 14 corresponding to a request command 11 sent to the encoder 9 by the controller 1, and the controller 1 sends the command signal 15 operated on the basis of the received rotational angle data 14 to the servo-amplifier 6. |
