Electric motor controller

Details Electric motor controller Electric motor controller

1997-09-02

2000-09-19

Sircus, Brian

Electricity: motive power systems

Induction motor systems

Primary circuit control

318809, 318600, 388805, 388911, H02P 534

Patent

active

061217476

ABSTRACT:
A controller for an electric motor, includes a reference circuit and control circuitry. The reference circuit generates a reference signal having a phase and frequency determined in accordance with a set of motion parameters input to the circuit. The control circuitry receives the reference signal and receives a feedback signal from a rotation detector coupled to the motor, the detector having a predetermined rotational resolution, and compares the reference signal and the feedback signal to generate a drive signal used to drive the motor at a speed and phase of rotation determined by the frequency and phase of the reference signal. The phase of rotation of the motor is locked to the phase of the reference signal such that deviation of the phase of rotation relative to the phase of the reference signal at steady state is substantially smaller than the rotational resolution of the rotation detector.

REFERENCES:
patent: 3829747 (1974-08-01), Woolfson et al.
patent: 4357569 (1982-11-01), Iwakane et al.
patent: 4358726 (1982-11-01), Iwakane et al.
patent: 4361792 (1982-11-01), Davis, Jr. et al.
patent: 4489267 (1984-12-01), Saar et al.
patent: 4588936 (1986-05-01), Itoh et al.
patent: 4621224 (1986-11-01), Watabe et al.
patent: 4680518 (1987-07-01), Kurakake et al.
patent: 4689539 (1987-08-01), Unno et al.
patent: 4772838 (1988-09-01), Maresca
patent: 4795950 (1989-01-01), Ota et al.
patent: 4808902 (1989-02-01), Miyazaki et al.
patent: 4893066 (1990-01-01), Stewart et al.
patent: 5010287 (1991-04-01), Mukai et al.
patent: 5140245 (1992-08-01), Stacey
patent: 5325460 (1994-06-01), Yamada et al.
patent: 5367241 (1994-11-01), Lee et al.
patent: 5433541 (1995-07-01), Hieda et al.
patent: 5467004 (1995-11-01), Matsuo et al.
patent: 5495161 (1996-02-01), Hunter
patent: 5533166 (1996-07-01), Yoshida et al.
patent: 5694015 (1997-12-01), Luniewicz et al.
patent: 5731681 (1998-03-01), Inaniwa et al.
patent: 5907298 (1999-05-01), Kiriyama et al.
Brochure: Philips Semiconductor Catalogue, Digital Phase-Locked-Loop Filter, pp. 569,572, Sep. 1993.

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