Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1983-02-02
1985-09-10
Dobeck, B.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318600, 318608, G05B 1942
Patent
active
045409242
ABSTRACT:
A digital servo device having a servomotor with a feedback control device including a position detector. The detector detects the phase relationship among the various signals. The detector is a flip flop located between an AND gate and a differentiation circuit. The flip flop is connected to be set by a predetermined point detecting signal output from the AND gate and the flip flop is connected such that the positive and reverse direction command pulses are inhibited from being produced by locking a receiving shift register in response to an output signal from the flip flop. The feedback circuit is reset by a reset signal which comprises a differentiated output signal of the flip flop which has a pulse width wide enough for obtaining a resetting condition but not so wide that the next positive and reverse direction detecting pulses are extinguished.
REFERENCES:
patent: 3175138 (1965-03-01), Kilroy et al.
patent: 3401321 (1968-09-01), Miki
patent: 3621357 (1971-11-01), Kubo
patent: 3843915 (1974-10-01), Helmbold
patent: 4318519 (1983-03-01), DuVall
patent: 4319172 (1982-03-01), Sieradzki
Adams Bruce L.
Burns Robert E.
Dobeck B.
Kabushiki Kaisha Daini Seikosha
Lobato Emmanuel J.
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