Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features
Patent
1990-06-29
1991-08-06
Ip, Paul
Electricity: motive power systems
Positional servo systems
With protective or reliability increasing features
318434, 318685, 318696, 388815, 388903, 388907J, 388934, 310 58, 310 62, 310 68R, H02P 800
Patent
active
050380885
ABSTRACT:
An electrical stepper motor system is provided in which a microcomputer controlled driver monitors the real time operating parameters of the stepper motor. The driver is controlled by the microcomputer to keep the real time operating parameters of the motor in a range that is governed by limiting parameters. The limiting parameters are determined by the microcomputer on a moment by moment basis in response to changes in certain conditions occurring within the stepper motor, as well as in the outside operating environment. The microcomputer compares the microcomputer determined safe operating parameters with any user stipulated operating parameters, stored in the storage means of the microcomputer, to determine limiting parameters on a moment by moment basis. An encoder senses the position and velocity of the motor and provides appropriate status signals to enable the driver to compensate for position and velocity errors of the stepper motor. An indexer is also provided which provides the driver with pulses that determine the distance, speed and direction of a move. In the illustrative embodiment, the driver, microcomputer, indexer, power supply and encoder circuitry are hybridized on at least one hybrid circuit, each circuit being attached to a heat sinking system, potted in a series of thermally conductive and EMI/RF insulating compounds, and are enclosed in a metallic enclosure that is shielded from outside electrical noise, with the enclosure being directly coupled to the back of the stepper motor to form a compact, unitary device.
REFERENCES:
patent: 3229130 (1966-01-01), Drouard
patent: 3277346 (1966-10-01), McAdam et al.
patent: 3386019 (1968-05-01), Hill
patent: 3531702 (1970-09-01), Hill
patent: 3538361 (1970-11-01), Hilterbrick et al.
patent: 3569804 (1971-03-01), Studer
patent: 3707638 (1972-12-01), Nailen
patent: 3809935 (1974-05-01), Kristen et al.
patent: 4072888 (1978-02-01), Bechtle et al.
patent: 4097790 (1978-06-01), Wilson
patent: 4134055 (1979-01-01), Akamatsu
patent: 4191245 (1980-03-01), Wendt et al.
patent: 4205246 (1980-05-01), Wise et al.
patent: 4259603 (1981-03-01), Uchiyama et al.
patent: 4266152 (1981-05-01), Herr et al.
patent: 4317176 (1982-02-01), Saar et al.
patent: 4329636 (1982-05-01), Uchida et al.
patent: 4409530 (1983-10-01), Neeper et al.
patent: 4482847 (1984-11-01), Rudich, Jr. et al.
patent: 4547826 (1985-10-01), Premerlani
patent: 4550277 (1985-10-01), Carney
patent: 4554473 (1985-11-01), Muller
patent: 4558245 (1985-12-01), Glasauer et al.
patent: 4574226 (1986-03-01), Binder
patent: 4591774 (1986-05-01), Ferris et al.
RIFA Data Sheet PBA 3219, "Integrated Circuits", Oct. 1983.
Hurst "Stepping Motor Controller", brochure.
Semix Rorze document.
Compumotor Corporation DH Series Indexer Drive brochure.
Interloop Model #200 catalog sheet.
Advanced Micro Systems, Inc. SM-2 brochure.
Fasco Type 04 catalog sheet.
Panasonic Industrial Brushless DC Fan Motor publicity.
Product Design & Development sheet, "AC Motor Starting Switch".
Papst document.
Unitrode Corporation, Stepper Motor Drive Circuit brochure.
RIFA PBL 3717 brochure.
Sigma Instruments, Inc., PBD 3517 brochure.
Sigma Instruments, Inc., Model 29B brochure.
Sigma Instruments, Inc., Model 29A brochure.
Superior Electric, Catalog MMC781-4 (1984).
Superior Electric, Catalog MSX1084 (1984).
Slo-Syn DC Stepping Motors Document.
Superior Electric, "Slo-Syn DC Stepping Motors", catalog (1979).
Compumotor Corporation 90-page catalog.
Arends Gregory E.
Polzin James R.
LandOfFree
Stepper motor system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stepper motor system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepper motor system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1989595