Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1984-12-17
1985-09-24
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318314, 318317, 318326, 318327, H02P 506
Patent
active
045435162
ABSTRACT:
Disclosed is a speed and phase control system for a moving apparatus driven by an electric motor, or the like, and provided with a speed control system for controlling the moving apparatus to an initially set speed, a phase control system for synchronizing the phase of the moving apparatus with a reference signal, and an error correction device storing therein a target value of and for comparing an actual speed or a phase of the moving apparatus with the target value to detect an error therebetween to thereby correct the initially set value in accordance with the error, whereby control is made such that the moving apparatus is operated at the target value of speed and phase thereof. Further, the error correction device is cut off from the speed control system when the speed reaches a value near the target value and at the same time the operation of the phase control system is started.
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Fukushima Isao
Kano Kenji
Kobori Yasunori
Nishijima Hideo
Okamoto Kaneyuki
Hitachi , Ltd.
Ip Shik Luen Paul
Shoop Jr. William M.
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