发明授权
- 专利标题: Apparatus and method for controlling or regulating an oscillating deflectable micromechanical element
- 专利标题(中): 用于控制或调节振荡偏转微机械元件的装置和方法
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申请号: US12243308申请日: 2008-10-01
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公开(公告)号: US07977897B2公开(公告)日: 2011-07-12
- 发明人: Harald Schenk
- 申请人: Harald Schenk
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
- 当前专利权人地址: DE Munich
- 代理机构: Gauthier & Connors LLP
- 主分类号: H02K33/00
- IPC分类号: H02K33/00
摘要:
The invention relates to an apparatus and to a method for controlling or regulating the deflection of micromechanically manufactured deflectable elements which, driven electrostatically, are deflected in an oscillating manner. It is the object of the invention to provide a possibility with which a much larger deflection range can be utilized and in so doing the required voltage potential difference for the electrostatic drive of a deflection can be kept small and the occurrence of the pull-in effect can be avoided. In accordance with the invention, a deflectable element is present which is held at a frame element by at least one spring element and which can be deflected using an electrostatic drive. The deflection can be achieved by means of at least one counter-electrode and the deflectable element usable as an electrode. In addition, at least one detector is present which is suitable for the contactless detection of at least one deflection position and which is connected to an electronic evaluation and control unit to influence the electrical voltage potential difference between the deflectable element and the counter-electrode(s) in dependence of a specific deflection position.
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