Piezo multilayer actuator manufacturing method, involves applying electrical voltage, which is inversely polarized to electrical voltage that expands piezo multilayer stack, to stack such that stack is contracted

摘要

The method involves connecting an end pipe with a bourdon tube (3) that is made up of a thin metal foil, and inserting a piezo multilayer stack in the interior of the tube. An electrical voltage, which is inversely polarized to an electrical voltage that expands the stack, is applied to the stack such that the stack is contracted. Another end piece is connected with the tube when the voltage is applied and the tube has high temperature.