Electricity: motive power systems – Braking – Dynamic braking
Patent
1983-05-31
1984-07-17
Dobeck, B.
Electricity: motive power systems
Braking
Dynamic braking
318480, 318603, H02P 320
Patent
active
044608578
ABSTRACT:
A rapidly-spinning motor-driven disc is quickly brought to a halt by utilizing the motor in a controlled current dynamic feedback mode. An electrical signal is provided to cut off the motor braking current when the rotating motor shaft reaches substantially zero velocity, thereby avoiding any residual rotation of the disc. As the disc slows at a constant deceleration rate, the apparatus measures the relative time durations of two consecutive pulses which represent equal displacement arcs on the disc. From these data the time at which zero velocity will be achieved is computed, and the motor current cutoff signal is generated at the proper instant.
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IBM Technical Disclosure Bulletin, vol. 22, No. 6, Nov. 1979.
Dobeck B.
Maginniss Christopher Lyle
RCA Corporation
Ro Bentsu
Tripoli Joseph S.
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