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热词
    • 10. 发明授权
    • Hybrid piezoelectric and magnetostrictive actuator
    • 混合压电和磁致伸缩致动器
    • US06998999B2
    • 2006-02-14
    • US10409558
    • 2003-04-08
    • Michael L. FrippRoger L. Schultz
    • Michael L. FrippRoger L. Schultz
    • G01V3/00
    • E21B47/14B06B1/06B06B1/08G01V1/40
    • An electromechanical transducer formed by an electrical and mechanical combination of a piezoelectric device and a magnetostrictive device. The two devices are electrically coupled so that their capacitive and inductive reactances approach a balance to provide an essentially resistive combined input at a selected frequency. Efficiency of circuits driving the transducer is improved. The devices are mechanically coupled so that the mechanical outputs add or reinforce each other. Two transducer pairs may be used in a two frequency telemetry system with each pair tuned to one of the frequencies for optimal reactance balancing and transduction efficiency.
    • 一种由压电器件和磁致伸缩器件的电气和机械组合形成的机电换能器。 两个器件电耦合,使得它们的电容和电抗接近平衡,以提供在选定频率的基本上电阻的组合输入。 驱动换能器的电路的效率得到改善。 这些设备是机械耦合的,使得机械输出增加或相互加强。 两个换能器对可以用在两个频率遥测系统中,每个对都调谐到一个频率,以获得最佳的电抗平衡和换能效率。