Shutter mechanism

Details Shutter mechanism Shutter mechanism

1979-10-09

1982-10-19

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318616, 318632, G05B 501

Patent

active

043552722

ABSTRACT:
A shutter is rotatably mounted in a housing for opening and closing a shutter aperture in the housing. The shutter is coupled to a drive unit for unidirectionally rotating the shutter with the same velocity profile to open and close the shutter aperture during each exposure period. This drive unit includes a drive motor and a control circuit having a source of position and velocity reference data and a feedback control loop configurable for either position or velocity control of the shutter as determined by a control command.

REFERENCES:
patent: 3704659 (1972-12-01), Low et al.
patent: 3906326 (1975-09-01), Chur
patent: 4088938 (1978-05-01), Baker
patent: 4103314 (1978-07-01), Case
patent: 4143310 (1979-03-01), Fujinawa et al.
patent: 4168457 (1979-09-01), Rose

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