MOTOR CONTROL SYSTEM AND STAGE SYSTEM

PROBLEM TO BE SOLVED: To provide a motor control system, having a simple configuration which enhances reliability by sustaining operation over a longer time, even if external power supply is momentarily interrupted, and to provide a stage system to which the motor control system is applied. SOLUTION: A motor control system 1 includes an AC servo motor 32; a DC servo motor 42; an AC servo amplifier 31 for driving the AC servo motor 32; a DC servo amplifier 41 for driving the DC servo motor 42; a detector 13 for detecting service interruption of a commercial power supply 11; a power supply apparatus 43 for supplying power from the commercial power supply 11 to the DC servo amplifier 41, while converting into DC power; and a controller 20 for controlling the AC servo amplifier 31, such that the torque of the AC servo motor 32 reduces and controlling the DC servo amplifier 41, such that the torque of the DC servo motor 42 reduces after service interruption of the commercial power supply 11 is detected by the service interruption detector 13. COPYRIGHT: (C)2009,JPO&INPIT