Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1994-03-22
1995-08-15
Shoop, Jr., William M.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318810, 318608, 318259, G05B 1929, H02D 540
Patent
active
054422736
ABSTRACT:
An apparatus and method for controlling driving of a apparatus such as a motor. A signal representing the position and/or velocity of the motor is received by a drive control unit. A microprocessor in the drive control unit provides a division ratio signal and a rotation judging signal to a clock pulse divider and two-phase pulse generator, respectively, and also calculates the velocity of the apparatus in accordance with the condition data. The clock pulse divider divides a clock pulse signal in accordance with the division ratio signal and outputs a divided clock pulse signal. The two-phase pulse generator generates two-phase pulses having a 90-degree phase shift of a given polarity with respect to one another in accordance with the divided pulse signal, and reverses the polarity of the phase shift in accordance with the rotation judging signal. The microprocessor further outputs a control signal to control driving of the apparatus in accordance with the calculated velocity and the two-phase pulses.
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Ikawa Yasushi
Tsutsumi Seisuke
Cabeca John W.
Mitsubishi Denki & Kabushiki Kaisha
Shoop Jr. William M.
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