| 摘要 |
PURPOSE:To simultaneously control to operate a plurality of DC electric machines by inputting a speed correction value from speed control means obtained by comparing an output of reference signal generating means with a rotation output signal to a driver. CONSTITUTION:A speed controller 15 compares an output signal 14 of a 1/2 frequency divider 13 with an output signal of an oscillator 16 for setting a target speed of a motor, and outputs an acceleration command voltage to a line 17 to an amplifier 18 when a frequency of the signal 14 of the divider 13 is lower than the signal of the oscillator 16. The amplifier 18 outputs an amplified speed command voltage to a line 19 to a comparator 20, which outputs a rectangular control voltage to raise a speed of the motor. On the other hand, a motor having magnetic rotation detectors 24, 25, 26 and a rotor 27 is driven by a distributor 28 and a driver 29, and the rectangular signal is also input to the driver 29 to rotate a motor having the rotor 27 at the same speed as that of the motor. As a result, speed control means of a plurality of motors can be reduced to one. |
