Driving apparatus for vibration type actuator and driving method for vibration type actuator
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United States of America Patent
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Nov 20, 2007
Grant Date -
May 24, 2007
app pub date -
Jun 10, 2005
filing date -
Jun 15, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A driving apparatus for a vibration type actuator is disclosed, which can boost the power source voltage and can reduce the cost and the size of the apparatus. The driving apparatus comprises an inductor being connected to a power source, a pulse generation circuit generating a first and second pulse signals that have a phase difference; a first switching element switching a supply operation for supplying the energy accumulated in the inductor to the electro-mechanical energy conversion element according to the first pulse signal; and a second switching element switching a discharge operation for discharging the energy accumulated in the electro-mechanical energy conversion element according to the second pulse signal.
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