发明授权
- 专利标题: Circuit for the dynamic control of ceramic solid-state actuators
- 专利标题(中): 用于陶瓷固态致动器动态控制的电路
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申请号: US09673687申请日: 2000-12-22
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公开(公告)号: US06617754B1公开(公告)日: 2003-09-09
- 发明人: Uwe Knauss
- 申请人: Uwe Knauss
- 优先权: DE19818273 19980423; DE19825210 19980605
- 主分类号: H01L4106
- IPC分类号: H01L4106
摘要:
The invention relates to a circuit arrangement for the dynamic control of ceramic solid-state actuators, such as piezotranslators with energy recovery by means of magnetic intermediate stores and/or storage capacitors as well as by clocked switches. For achieving a predetermined linear voltage characteristic at the piezotranslator, according to the invention, a single inductive intermediate store is arranged in the secondary circuit, which is connected in series with the piezotranslator, and the secondary circuit is designed as a half-bridge. The switches provided in the respective half-bridge are controlled at a high cycle or switching frequency by an external controller, with the series connection of piezotranslator and inductive intermediate store furthermore carrying a superimposed bridge direct current in order to ensure the desired charging of the capacitance of the piezotranslator, on the one hand, and to optimize the energy recovery, on the other hand.
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