Controlling apparatus of motor

Details Controlling apparatus of motor Controlling apparatus of motor

1994-09-16

1995-08-22

Ro, Bentsu

Electricity: motive power systems

Battery-fed motor systems

318461, 318723, H02H 708, B60L 300

Patent

active

054443407

ABSTRACT:
In a controlling apparatus of a motor, an address generating device generates digital address signals corresponding to a position of a rotor of the motor on the basis of the Z-phase, A-phase, and B-phase signals outputted from an encoder installed in the motor. A sine wave data for driving the motor is readout based on the digital address signal from a waveform memory device to drive the motor in accordance with the sine wave data by a PWM inverter. An abnormality detecting circuit detects agreement/disagreement of a timing level of an output signal of the waveform memory device which is binarized with using zero as a threshold and shifted a predetermined amount from a leading edge or trailing edge thereof and a level of the CS signal. A motor stopping device stops the motor in response to a disagreement detecting signal of the abnormality detecting circuit.

REFERENCES:
patent: 4600835 (1986-07-01), Ishida et al.
patent: 5128536 (1992-07-01), Higashi
patent: 5306998 (1994-04-01), Nakamura
patent: 5357181 (1994-10-01), Muton et al.

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