| 摘要 |
PURPOSE:To enable to control a fast responsiveness stably with less variation in the rotating speed by selecting the frequency of an encoder to substantially constant for the preset rotating speed, thereby maintaining the control times of motors constant. CONSTITUTION:A signal of frequency corresponding to the rotating speed is outputted from encoders EA, EB, EC upon rotating of a motor. A data selector DS selects one of signals from the encoders EA, EB, EC by a signal from a controller CTRL, and outputs an interrupt signal INTO to the controller CTRL. The entire controller MPU compares the preset values of the rotating speeds of motors with the actual rotating speed measured from an encoder signal, and outputs data of duty for energizing motors to drivers DRIVEA-C of motors EA, EB, EC. |
