| 摘要 |
PURPOSE:To provide a safe and cheap digital three phase PWM wave generator which can cope with wide uses optimally, concerning a three-phase motor PWM controller in an inverter, an AC servo controller, etc. CONSTITUTION:This generator is composed of a group of resistors 2-5 and 8-10 being reloadable from a microcomputer, an up-down counter 1, digital comparators 6, 7, 11, 12, and 13, and a dividing means 23, a digital on-delay circuit 21, and a signal mask means 25. |
