Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1976-10-13
1978-11-21
Hohauser, Herman J.
Electricity: motive power systems
Open-loop stepping motor control systems
328 34, 307271, G05B 1940
Patent
active
041268210
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: 3805138 (1974-04-01), Hilker
patent: 3806821 (1974-04-01), Niemeyer et al.
patent: 3818261 (1974-06-01), Clarke, Jr.
Dana Corporation
Hohauser Herman J.
Pollock Robert E.
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