Apparatus for accurately moving a body in accordance with a pred

Details Apparatus for accurately moving a body in accordance with a pred Apparatus for accurately moving a body in accordance with a pred

1981-11-12

1984-03-27

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Limit or end-stop control

318467, G05B 1101

Patent

active

044397151

ABSTRACT:
An apparatus is provided for accurately moving a body in accordance with a predetermined motion. An embodiment of the invention relates to an optical scanning system in which the movement of an intermittently tilting mirror is required to be extremely linear. The positions of the mirror at predetermined points are compared with the required positions and correction signals generated for use on subsequent movement cycles. Because of the high speed of movement of the mirror, it is preferred to make only one comparison per movement cycle and it may be necessary for a number of comparisons to be made for any one predetermined point until a satisfactory correction is achieved.

REFERENCES:
patent: 3665282 (1972-05-01), Skehan
patent: 3831076 (1974-08-01), Burke et al.
patent: 3852651 (1974-12-01), Dufendach
patent: 3995207 (1976-11-01), Way
patent: 4132939 (1979-01-01), Kameyama et al.

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