Automatic velocity and position controller for a film processor

Details Automatic velocity and position controller for a film processor Automatic velocity and position controller for a film processor

G - Physics

03

D

341/48

G03D 3/13 (2006.01)

Patent

CA 1161142

ABSTRACT OF THE DISCLOSURE An automatic controller for a film processor is characterized by a motor energy signal generator which is responsive to both a position error signal and to a velocity error signal. The motor energy signal is periodically applied to a drive motor for the processor to modify the portion of the available energy transmitted from a source to the motor to restore the actual film position to within a pre- determined range of an ideal film position and to restore the actual velocity of the film to within a predetermined range of an ideal film velocity.

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