Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1981-04-29
1983-06-07
Truhe, J. V.
Electricity: motive power systems
Open-loop stepping motor control systems
318138, 318254, G05B 1940
Patent
active
043873286
ABSTRACT:
A motor controller for a variable airgap motor. The controller includes first means responsive to a command signal for providing a first signal indicative of the absolute value of the command signal. The controller further includes a second means responsive to the first signal for limiting the rate of increase of the first signal from exceeding the acceleration capacity of the motor and third means for generating a direction signal indicative of the desired direction of rotation of the motor. The controller further includes pulse means responsive to the output of the second means for generating a train of pulse signals, the rate of which is indicative of the commanded speed. The controller further includes sequencing and driver means wherein the sequencing means is responsive to the pulse signals and the direction signal for generating a plurality of actuation signals one associated with each coil of the motor and wherein the driver means includes means for controlling the current flow through a determinable set of the motor coils.
REFERENCES:
patent: 3577049 (1971-05-01), Madurski
patent: 3626269 (1971-12-01), Stanley
patent: 4035708 (1977-07-01), Schaff
patent: 4107595 (1978-08-01), Campe
patent: 4250435 (1981-02-01), Alley et al.
Cuoco Anthony F.
Isen Forester W.
Seitzman Markell
The Bendix Corporation
Truhe J. V.
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