Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1994-05-20
1995-11-21
Ro, Bentsu
Electricity: motive power systems
Limitation of motor load, current, torque or force
318254, H02P 618
Patent
active
054690331
ABSTRACT:
Electronic solid state circuitry is provided which takes the place of Hall-effect sensors in brushless DC motors, providing output signals substantially the same as those of Hall-effect sensors. The Hall-effect sensors in existing motors may be deactivated or removed and functionally replaced by the solid state circuit. The circuit may include a number of D flip flops and a NAND gate connected to a voltage controlled oscillator by a switch which is part of a start up circuit. A direction reverse circuit, a sampling logic circuit (to determine which phase is non-energized at a particular point in time), and a commutation error detector circuit are also preferably provided. New motors utilizing the circuitry have increased reliability and precise velocity regulation.
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Ro Bentsu
SL Montevideo Technology, Inc.
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