| 发明名称 | Driving circuit for vibration-type actuator | ||
| 摘要 | An apparatus includes a vibration-type actuator and a driving circuit. The vibration-type actuator includes a vibration member and a moving member, wherein the vibration member includes an electro-mechanical energy conversion element and the moving member is configured to move relative to the vibration member. The driving circuit includes a capacitor and an inductor connected in series with the capacitor to the electro-mechanical energy conversion element. In an example, parameters of the driving circuit are set such that, when a series resonance frequency of the inductor and the capacitor is denoted by fs and a resonance frequency of the vibration member is denoted by fm, a condition 0.73·fm<fs<1.2·fm is satisfied. | ||
| 申请公布号 | US8791622(B2) | 申请公布日期 | 2014.07.29 |
| 申请号 | US201314017089 | 申请日期 | 2013.09.03 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Sumioka Jun;Kataoka Kenichi |
| 分类号 | H01L41/09 | 主分类号 | H01L41/09 |
| 代理机构 | Canon USA, Inc., IP Division | 代理人 | Canon USA, Inc., IP Division |
| 主权项 | 1. An apparatus comprising: a vibration-type actuator comprising a vibration member and a moving member, wherein the vibration member includes an electro-mechanical energy conversion element and the moving member is configured to move relative to the vibration member; and a driving circuit comprising a capacitor and an inductor connected in series with the capacitor to the electro-mechanical energy conversion element, wherein parameters of the driving circuit are set such that, when a series resonance frequency of the inductor and the capacitor is denoted by fs and a resonance frequency of the vibration member is denoted by fm, a condition 0.73·fm<fs<1.2·fm is satisfied. | ||
| 地址 | Tokyo JP | ||