Electromechanical torsional oscillator with resonant...

Details Electromechanical torsional oscillator with resonant... Electromechanical torsional oscillator with resonant...

H - Electricity

02

K

318/3, 310/53

H02K 33/00 (2006.01) G02B 26/10 (2006.01) H04R 11/14 (2006.01)

Patent

CA 1063163

ELECTROMECHANICAL TORSIONAL OSCILLATOR WITH RESONANT FREQUENCY AND AMPLITUDE CONTROL ABSTRACT A limited rotation electromechanical torsional oscillator for driving a mirror in an optical deflection system. A drive armature is mounted on a torsion bar at the opposite end from the torsion bar support. The ends of the armature lie in an air gap between two pole pieces. The magnet flux in the gap is caused to vary by means of a drive winding which results in armature rotation. Resonant frequency is varied by adjustment of the length of the torsion bar and the flux density. Q is varied by means of resistance in series with the drive winding.

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