Electricity: motive power systems – Positional servo systems – With stabilizing features
Patent
1981-01-26
1984-05-08
Dobeck, B.
Electricity: motive power systems
Positional servo systems
With stabilizing features
318649, 318657, 318616, G05B 501
Patent
active
044477708
ABSTRACT:
A precision drive system including a base plate; track means and an air bearing means movable relative to one another, one of the means being fixed to the base plate and the other being movable for carrying an object to be moved relative to the base plate; means for moving one of the track and air bearing means; means for driving the moving means; and a control circuit including a power circuit for operating the means for driving; a velocity sensor for detecting the velocity of the movable one of the track and air bearing means, and a velocity feedback circuit for introducing velocity error signals into the power circuit to correct velocity; a position sensor to detect the position of the movable one of the track and air bearing means and a position feedback circuit for introducing position error signals into the power circuit to correct position.
REFERENCES:
patent: 3684961 (1972-08-01), Muir
patent: 3851238 (1974-01-01), Fletcher
patent: 3935523 (1976-01-01), Clevland et al.
patent: 3939389 (1976-02-01), Nopper
patent: 4201935 (1980-05-01), Fukuma
patent: 4221995 (1980-09-01), Barkman
patent: 4331910 (1982-05-01), Kohzai et al.
patent: 4341986 (1982-07-01), Browder
patent: 4345194 (1982-08-01), Green
Dobeck B.
Iandiorio Joseph S.
Visidyne, Inc.
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