发明授权
- 专利标题: Electromechanical transducer and electrical device
- 专利标题(中): 机电换能器和电气装置
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申请号: US10570435申请日: 2004-08-23
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公开(公告)号: US07554425B2公开(公告)日: 2009-06-30
- 发明人: Jozef Thomas Martinus Van Beek , Peter Gerard Steeneken
- 申请人: Jozef Thomas Martinus Van Beek , Peter Gerard Steeneken
- 申请人地址: NL Eindhoven
- 专利权人: NXP B.V.
- 当前专利权人: NXP B.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP03103341 20030910; EP04100951 20040309
- 国际申请: PCT/IB2004/051524 WO 20040823
- 国际公布: WO2005/025057 WO 20050317
- 主分类号: H03H9/02
- IPC分类号: H03H9/02 ; H03H9/46 ; H03H3/013
摘要:
The electromechanical transducer (1) has a resonator element (20) and an actuator (30) for inducing an elastic deformation of the resonator element (20) dependent on the electrical input signal. For temperature stabilization, the electromechanical transducer (1) has a sensing element (40) for providing an electrical sensing signal has a function of a temperature of the resonator element (20), and a heating element (50) for heating the resonator element to reduce the temperature dependent frequency deviation to keep the resonance frequency equal to the nominal frequency at operating temperature. The heating element (50) is controlled by an electrical heating signal based on the electrical sensing signal. The resonator element may have the hating element or the sensing element; it may be part of a wheatstone bridge; it may consist of two longitudinally extendable parts (201, 202) extending in opposite directions, being attached in a support area (204) in a deformation free part (203).
公开/授权文献
- US20070262831A1 Electromechanical Transducer and Electrical Device 公开/授权日:2007-11-15
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