System for driving and controlling the motion of an oscillatory

Details System for driving and controlling the motion of an oscillatory System for driving and controlling the motion of an oscillatory

1996-08-09

1998-08-18

Stephan, Steven L.

Electricity: motive power systems

Reciprocating or oscillating motor

318685, 235462, 235470, H02K 2908, G06K 710

Patent

active

057962227

ABSTRACT:
A computerized control system for driving an rotor which can carry a laser or a beam deflecting mirror and is actuated by a coil thereon electromagnetically coupled to a fixed magnet or a stepper motor coil. The rotor can be part of an electromechanical oscillatory system supported by flexures or the stepper motor can be electrically biased to produce, electrodynamically a restoring force. The back EMF of the coil is sensed, translated into successive digital signals which are processed in accordance with programs in firmware of the computer to generate driving pulses which are applied to the coil to obtain desired displacement motion of oscillation suitable for scanning the beam.

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