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    • 13. 发明申请
    • Servo Accelerometer
    • 伺服加速度计
    • US20110209545A1
    • 2011-09-01
    • US13013614
    • 2011-01-25
    • Kenji KuramotoYoshiyuki AndoHiroyuki MotokiShuichi YamamotoTakazumi Yamada
    • Kenji KuramotoYoshiyuki AndoHiroyuki MotokiShuichi YamamotoTakazumi Yamada
    • G01P15/13
    • G01P15/132G01P15/125
    • Canister-shaped magnetic reinforcing elements 31, 32 made of a ferromagnetic material having a Curie temperature higher than magnetic yokes 11, 12 are provided inside the magnetic yokes 11, 12. The inner periphery 31a, 32a of an opening in each of the magnetic reinforcing elements 31, 32 is opposed to the outer periphery 51a, 52a of each of pole piece tops 51, 52. A torquer coil 61, 62 is located between the inner periphery 31a, 32a of the opening in each of the magnetic reinforcing elements 31, 32 and the outer periphery 51a, 52a of each pole piece top 51, 52. The magnetic reinforcing elements 31, 32 provided inside the magnetic yokes 11, 12 form independent magnetic circuits. Since the magnetic reinforcing elements 31, 32 have a Curie temperature higher than the magnetic yokes 11, 12, a high accuracy of acceleration measurement in a high-temperature range can be achieved.
    • 在磁轭11,12的内侧设置有居里温度高于磁轭11,12的铁磁性材料构成的罐状磁性加强件31,32。每个磁性增强件中的开口的内周31a,32a 元件31,32与极靴顶部51,52的外周51a,52a相对。在每个磁性增强元件31的开口部的内周31a,32a之间设置有绞线线圈61,62, 32和每个极靴顶部51,52的外周51a,52a。设置在磁轭11,12内的磁性加强元件31,32形成独立的磁路。 由于磁性增强元件31,32具有高于磁轭11,12的居里温度,所以可以实现高温范围内的高精度的加速度测量。