| 摘要 |
PURPOSE:To control a motor with excellent follow-up properties by providing an arithmetic means computing control voltage as sum of a value obtained by multiplying the difference of the target speed of revolution and the actual speed of revolution by a first constant, a value acquired by multiplying the actual speed of revolution by a second constant and offset voltage, a starting- voltage measuring means and an offset-voltage correction means. CONSTITUTION:A control section 14 conducts the computation and arithmetic processing of the control signal of a servo motor 10. The speed command clock of the control-side micro-computer of a copier body is transmitted over an edge detector 151, a rising edge is detected, and sent to a free running counter 152, and the content of a capture register 153 is updated by the rising edge. The control section 14 reads the contents of the capture register 153 and an up counter 154 at every sampling time, and outputs the accurate number of reference clocks from the difference of the number of reading counting at this time and the previous time of the capture register 153. Accordingly, the servo motor 10 can be controlled with excellent follow-up properties. |
