| 摘要 |
The present invention relates to a technique for outputting a vibration torque compensating current and removing a torque pulse generated at a footplate by using a detector for detecting a pulse rate generated at a sprocket and a device for detecting the magnitude of a pulse torque of an induction motor without changing the circumferential shape of the sprocket and the connecting structure of the footplate. To achieve the object of the invention, there is provided an operation control apparatus for an escalator which includes a power rectifier for converting a three-phase AC utility power into an AC power of variable voltage and variable frequency in order to control the operation speed of the escalator, a gear and a sprocket for running a footplate using rotatory force generated from the induction motor, a position detection for detecting the rotational position of the sprocket, and a control device for generating a vibration torque compensating current Irc in order to generated a torque in the direction opposite to an actual vibration torque according to the actual rotational speed Wr of the induction motor and the output signal of the position detector, in generating a pulse width modulation signal in order to control the driving of the power rectifier.
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