Electromechanical actuator having an active element of electroexpansive material专利检索-机电换能器变压器和转换设备专利检索查询-专利查询网

Electromechanical actuator having an active element of electroexpansive material

阅读：156发布：2021-11-03

专利汇可以提供Electromechanical actuator having an active element of electroexpansive material专利检索，专利查询，专利分析的服务。并且An electromechanical transducer having an active module of electroexpansive material, such as piezoelectric material. A chamber filled with noncompressible fluid that is bounded by first and second plungers or diaphragms, the first plunger being operatively connected to the module. The area of the second plunger is established at a size smaller than the first plunger so as to provide for motion amplification of the relatively small mechanical displacement of the electroexpansive module. An improved electroexpansive module and a method for making the same are also disclosed.，下面是Electromechanical actuator having an active element of electroexpansive material专利的具体信息内容。

权利要求

1. Apparatus for actuating a load comprising: an electroexpansive body having a surface, means for forming walls that define in cooperation with said surface a fluidtight chamber, a plunger having a face communicating with said chamber, said face having an area less than said surface of said electroexpansive body, noncompressive fluid in said chamber, means for applying an electrical field across said electroexpansive body, and means for coupling said load to said plunger including a second face on said plunger having an area which is larger than said first plunger face, means including said second face for defining a second fluidtight chamber, a noncompressible fluid in said second chamber, and a rod coupled to said load having an end surface in said second chamber that has an area less than said second plunger face.

2. Apparatus according to claim 1 wherein said electroexPansive body comprises: a plurality of discs of ceramic electroexpansive material having a thickness no greater than about one millimeter, a plurality of conductive discs, one of said conducting discs being interposed between each said ceramic disc, said discs and said electrodes being bonded together in a unitary assembly, first conductive means for electrically connecting together every alternate conductive disc, second electric circuit means for interconnecting all other conductive discs, whereby application of an electric field between conductive circuit means places an equal voltage across every disc in parallel so that the mechanical expansion of each said disc is in series.

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Electromechanical actuator having an active element of electroexpansive material

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