Device for controlling a stepper motor that drives one or more c

Details Device for controlling a stepper motor that drives one or more c Device for controlling a stepper motor that drives one or more c

1993-10-07

1999-06-29

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

G05B 1740

Patent

active

059173033

ABSTRACT:
A device for controlling a stepper motor that drives a plurality of shutter blades. The movement and position of the movement of the rotor of the stepper motor is monitored to determine when the next step of the stepper motor should be stepped so that the rotation of the rotor will be known to cause the shutter blades to form the correct aperture size. The device may also be used to drive an automatic focusing mechanism and/or zoom.

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