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公开(公告)号：US20240255317A1
公开(公告)日：2024-08-01
申请号：US18420840
申请日：2024-01-24
申请人： Proterial, Ltd.
发明人： Yohei SHIRAKAWA , Yuta SUGIYAMA , Naoki FUTAKUCHI , Yukio IKEDA , Yujiro TOMITA
IPC分类号： G01D5/20
CPC分类号： G01D5/2053 , G01D2205/10
摘要： A position detection device for detecting a position of a shaft moving forward and backward in an axial direction is provided with a detection object mounted on the shaft, a substrate disposed to face the detection object, an excitation coil that is mounted on the substrate and generates an AC magnetic field, a detection coil that is mounted on the substrate and arranged along the axial direction of the shaft and configured so that a magnitude of a voltage induced varies with a position of the detection object, and a sensor for detecting a physical quantity used to correct the position of the shaft by using a sensor coil configured by the excitation coil, the detection coil, or an other coil provided on the substrate.
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公开(公告)号：US20240255540A1
公开(公告)日：2024-08-01
申请号：US18419345
申请日：2024-01-22
申请人： Proterial, Ltd.
CPC分类号： G01P3/505 , B62D3/12 , G01D5/2053
摘要： A position detection device for detecting a position of a moving member moving forward and backward in a predetermined moving direction is provided with a detection object attached to the moving member, a substrate provided with an excitation coil being positioned to face the moving member and parallel to the moving direction of the moving member for generating a magnetic field in an area including the detection object, and a detection coil being interlinked with a magnetic flux of the magnetic field, a power supply unit for supplying an alternating current to the excitation coil, a calculation unit that calculates the position of the moving member based on an output voltage of the detection coil, and a spacing fluctuation suppression structure that suppresses fluctuations in a spacing between a facing surface facing the detection object and the detection object in the substrate.
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