发明名称 |
DRIVING DEVICE OF A VIBRATION TYPE ACTUATOR |
摘要 |
An object of the present invention is to improve electro-mechanical energy conversion efficiency and reduce generation of noises in a vibration type actuator. To achieve the above object of the present invention, each of plural switching elements is operated by a switching pulse generated by a drive control circuit of the motor. As a result, the drive control circuit selects a width of the generated switching pulse such that the amplitude of a base wave frequency component ("base wave") among frequency components of a voltage applied to an inductance element may be larger than a total amplitude of higher harmonic wave frequency components ("whole higher harmonic wave").
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申请公布号 |
US2002096970(A1) |
申请公布日期 |
2002.07.25 |
申请号 |
US19990456290 |
申请日期 |
1999.12.08 |
申请人 |
HAYASHI TADASHI;ATSUTA AKIO;KATAOKA KENICHI;YAMAMOTO SHINJI;ITO JUN |
发明人 |
HAYASHI TADASHI;ATSUTA AKIO;KATAOKA KENICHI;YAMAMOTO SHINJI;ITO JUN |
分类号 |
H01L41/04;H02N2/00;H02P25/02;(IPC1-7):H02N2/00 |
主分类号 |
H01L41/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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