Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1978-12-19
1980-11-25
Rubinson, Gene Z.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318602, 318673, 307 41, 200 11D, 200 14, 200 17R, G05B 1910
Patent
active
042361044
ABSTRACT:
The switch of the invention is a double deck type rotary switch having a position deck for detecting a home position and means for determining each position of the switch relative to the home position. A switching deck, rotated together with the position deck, selectively applies operating voltage to a plurality of operative devices, such as sprinkling valves.
The system incorporates a microprocessor to control a motor for driving the rotary switch to a commanded position. The position deck signals the microprocessor as the deck reaches the predetermined position and the processor provides a delay before applying voltage to the switching deck, insuring that good load contact is made, so that arcing is avoided. The switching deck makes its load contact a few degrees ahead of the position deck in order that the load contacts for the work voltage are in the center of their terminal spring clips before the microprocessor is signaled that the predetermined position has been attained.
A common operating line from the microprocessor to the switching deck includes a single valve driver for use with any one of the plurality of valves.
REFERENCES:
patent: 2958028 (1960-10-01), Smith
patent: 3092254 (1963-06-01), Germen
patent: 3673393 (1972-06-01), Schober
patent: 3863079 (1975-01-01), Calabrese
Caldwell Wilfred G.
Hamann H. Fredrick
Indyk Eugene S.
Rockwell International Corporation
Rubinson Gene Z.
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