Actuator with stepping motion function

Details Actuator with stepping motion function Actuator with stepping motion function

1984-12-05

1991-01-08

Budd, Mark O.

Electricity: motive power systems

Linear-movement motors

310 27, H02K 3300

Patent

active

049838938

ABSTRACT:
An actuator has a stepping motion function with a high stopping accuracy and resolution. The actuator includes a fixed portion and a movable portion constructed in combination so as to be movable relative to each other, a coil for imparting a moving force to the movable portion, a magnetic recording medium mounted on one of the fixed portion and the movable portion and recording magnetic signals, and a plurality of magnetic sensors mounted on the other thereof for detecting said magnetic signals in said magnetic recording medium, and wherein signals different in phase and output from said respective sensors are used by themselves, or signals inversely converted from the former signals are additionally used, and the coil is supplied with a driving force command by sequentially selecting and changing those signals.

REFERENCES:
patent: 4318038 (1982-03-01), Munehiro

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