Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1985-02-06
1985-10-08
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318138, 318254, 318318, 318439, H02K 2900
Patent
active
045462941
ABSTRACT:
An apparatus for removing torque ripples comprises a permanent magnet rotor, position sensors, stator armature coils, an operational circuit for effecting an arithmetic operation on detected signals from the position sensors, and a control circuit for driving the stator armature coils. According to another embodiment, an apparatus for removing torque ripples includes a direct-current motor having Y-connected armature coils, a detector for detecting counterelectromotive forces in the direct-current motor, an operational circuit for effecting an arithmetic operation on output signals from the detector, and a transistor for driving the direct-current motor.
REFERENCES:
patent: 3475672 (1969-10-01), Oltendorf
patent: 3775648 (1973-11-01), Brown et al.
patent: 3924166 (1975-12-01), Doemen
patent: 4317072 (1982-02-01), Goof et al.
patent: 4382214 (1983-05-01), Ban et al.
patent: 4396875 (1983-08-01), Yamauchi
patent: 4405885 (1983-09-01), Okamoto
patent: 4412159 (1983-10-01), Uzuka
patent: 4415844 (1983-11-01), Mendenhall et al.
patent: 4460856 (1984-07-01), Mizumoto
Ban Itsuki
Nakajima Akihiro
Ip Shik Luen Paul
Shoop Jr. William M.
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