The invention relates to an inductive torsion bar torque sensor (100) comprising at least: first and second stator arrangements (10, 10A) each having a receiving structure (11, 11A) comprising a periodic repeating structure with first and second cycles; first and second rotors (20, 20A) rotatably arranged relative to the first and second stator arrangements (10, 10A) so as to form two inductive position sensors (1, 1A) for measuring the angle of each end of the torsion bar (5) and generating respective signals; at least one excitation or transmitter coil (40); and an oscillator circuit for generating and coupling a periodic alternating voltage into the excitation coil (s) (40). The periodicity of the first receiving structure (11) is different from the periodicity of the second receiving structure (11A), the first and second receiving structures (11, 11A) comprising first and second coil structures (101, 101; the device comprises a first rotatable rotor (20) for the purpose of influencing the intensity of the inductive coupling between the excitation coil (s) (40) and the first receiving structure (11), and a second rotatable rotor (20A) for the purpose of influencing the intensity of the inductive coupling between the excitation coil (s) (40) and the second receiving structure (11A). The signals generated by the first and second pairs of receiving structures (11, 11A) and the rotor (20, 20A) are orthogonal.
本发明涉及一种感应扭杆扭矩传感器(100),包括至少:各自具有包括具有第一和第二周期的周期性重复结构的接收结构(11,11A)的第一和第二定子布置(10,10A);相对于第一和第二定子布置(10,10A)可旋转地布置从而形成用于测量扭杆(5)的每一端的角度并产生相应的信号的两个感应位置传感器(1,1A)的第一和第二转子(20,20A);至少一个激励或传输器线圈(40);以及用于产生周期性交变电压并将其耦合到(一个或多个)激励线圈(40)中的振荡器电路。第一接收结构(11)的周期性不同于第二接收结构(11A)的周期性,第一和第二接收结构(11,11A)包括第一和第二线圈结构(101,101;102,102),第一可旋转转子(20)用于影响(一个或多个)激励线圈(40)和第一接收结构(11)之间的感应耦合的强度的目的,第二可旋转转子(20A)用于影响(一个或多个)激励线圈(40)和第二接收结构(11A)之间的感应耦合的强度的目的。由第一和第二对接收结构(11,11A)和转子(20,20A)产生的信号是正交的。
Improved inductive torsion bar torque sensor
改进的感应扭杆扭矩传感器
2025-01-17
Patent
Electronic Resource
Chinese
INDUCTIVE SENSOR SYSTEM COMPRISING INDUCTIVE TORQUE AND POSITION SENSOR ASSEMBLIES
European Patent Office | 2025
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