Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1979-03-23
1981-02-03
Rubinson, Gene Z.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02P 602
Patent
active
042491169
ABSTRACT:
An improved motor speed and torque controller for brushless DC motors which provides an unusually smooth torque control arrangement. The controller provides a means for controlling a current waveform in each winding of a brushless DC motor by synchronization of an excitation pulse train from a programmable oscillator. Sensing of torque for synchronization is provided by a light beam chopper mounted on the motor rotor shaft. Speed and duty cycle are independently controlled by controlling the frequency and pulse width output of the programmable oscillator. A means is also provided so that current transitions from one motor winding to another is effected without abrupt changes in output torque.
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Frosch Robert A. Administrator of the National Aeronautics and Space
Hieda Lester S.
Manning John R.
McCaul Paul F.
Mott Monte F.
Redman John W.
Rubinson Gene Z.
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