| 摘要 |
PURPOSE:To enhance the accuracy of synchronizing by simplifying the converting circuit from a starting inverter to an operating inverter merely by adding a synchronous detector and an interrupt controller by using a microcomputer. CONSTITUTION:Motors 2a, 2b, 2c are sequentially controlled by the output of a sequence circuit 6 with an operating inverter 1 and a starting inverter 4. The inverters 1 and 4 are switched by supplying as an interrupt signal the output signal of a coincidence circuit 13 which discriminates the coincidence or incoincidence of the synchronous signals from PWM control signal generators 9, 11 to a microcomputer in response to the output signal of an interrupt controller 7e in the circuit of the microcomputer 7. |
