| 摘要 |
PURPOSE:To switch the speed of a motor at an arbitrary ratio by switching the number of counts of accelerating and decelerating programmable counters to switch the speed of the motor. CONSTITUTION:Accelerating and decelerating programmable counters 43 and 57 count clock pulses from a reference signal generator 42 for the prescribed period when a rotation signal output from a rotation detector 11 is input. When the period of a rotation signal is longer than the prescribed period is output, while when shorter, a deceleration signal of the differential period is output. When switching the speed, the signal level of a terminal 53 is controlled to switch the number of counts of the counters 43 and 57. |
