Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Work and feed motors
Patent
1978-01-25
1980-11-18
Truhe, J. V.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Work and feed motors
318571, 318696, H23Q 510
Patent
active
042348307
ABSTRACT:
Disclosed is a stepping motor control utilizing a microprocessor. The control is suitable for driving one or more stepping motors one at a time or in unison. In the illustrated embodiment when plural motors are driven together they are driven at the same rate or at rates in a fixed proportion to one another although several of the features of the invention are suitable for use in circuits providing contouring control; i.e., where separate motors are driven at separate stepping rates proportional to the relative distances each is to traverse for a single movement. An acceleration/deceleration circuit is utilized which provides simple yet highly accurate and efficient control of the stepping motors. Feed rate compensation for simultaneous drive of two motors is provided. Also a means is provided to allow stepping rates in excess of the counting rate capability of the microprocessor.
REFERENCES:
patent: 3576981 (1971-05-01), Okamoto
patent: 3878372 (1975-04-01), Sindelar
Dana Corporation
Leonardi Robert M.
Pollock Robert E.
Redman John W.
Truhe J. V.
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