Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Reexamination Certificate
2007-08-28
2007-08-28
Sircus, Brian (Department: 2836)
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
C318S119000, C310S036000
Reexamination Certificate
active
10853672
ABSTRACT:
An actuator driving apparatus comprises the following. A start signal generator generates a start signal having a frequency substantially equal to the resonance frequency of the movable portion of an actuator. A rock detector detects rock of the movable portion. A drive timing signal generator generates a drive timing signal based on the output of the rock detector. A switch is connected to the start signal generator and drive timing signal generator for selectively transmitting their outputs to a section arranged in a subsequent stage. A drive signal generator generates a drive signal based on the output of the switch, and supplies it to the actuator. A superposition preventing section prevents a frequency component of a frequency substantially equal to the resonance frequency from being superposed upon the output of the rock detector. The apparatus performs driving according to the rocking state of the movable portion, by switching the switch.
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Bauer Scott
Olympus Corporation
Scully , Scott, Murphy & Presser, P.C.
Sircus Brian
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