Separated inductosyn with all coils made on stator

Abstract

The invention claims to protect a separated inductosyn with all coils made on a stator, and belongs to the technical field of space position measurement sensors manufactured based on the electromagnetic principle. The separated inductosyn of the invention comprises a stator and a rotor, and the stator comprises a fine coding coil part and a coarse coding coil part. The fine coding annular coil part comprises fine coil groups each consisting of a fine excitation coil and a fine induction coil, and the fine coil groups are arranged annularly. The coarse coding coil part comprises coarse coil groups each consisting of a coarse excitation coil and a coarse induction coil, and the coarse coil groups are arranged annularly. One end face of the magnetic core of each coil group is on the working plane of the stator, the other end is fixed onto an annular base made of a soft magnetic material, and the annular base is fixed on a stator substrate. N cuboid magnetic conductive blocks and an Archimedes spiral magnetic conductive strip which are made of a soft magnetic material are embedded onto an annular disc made of a diamagnetic material on the rotor, wherein N is the number of cycles of fine coding. An absolute angle encoder can be formed after electronic parts are configured on the separated inductosyn of the invention.

Description

Technical field: [0001] The invention belongs to the technical field of sensors, and is a space relative position measuring sensor designed based on the principle of electromagnetic induction. Background technique: [0002] At present, angle sensors manufactured by using electromagnetic principles have been widely used in various instruments and equipment for decades, and inductive synchronizers are typical representatives of such components. [0003] The induction synchronizer is based on the principle of electromagnetic induction. The excitation circuit inputs a changing current to the excitation coil, so that the induction coil outputs an induced voltage. The magnitude of the induced voltage depends on the change of the excitation current, the spatial distribution of the soft magnetic material, the shape of the coil and the excitation. The relative position of the coil and the induction coil. By sampling and calculating the induced voltage, the measurement data of the sp...

AI Technical Summary

Problems solved by technology

[0005] When the rotor of the induction synchronizer rotates multiple times relative to the stator, the excitation signal needs to be transmitted to the excitation coil on the rotor through a conductive slip ring, or the sinusoidally changing excitation signal is transmitted to the excitation coil of the rotor by using a toroidal transformer. The former requires Configure a conductive slip ring. The latter requires a toroidal transformer. In addition to the sinusoidal excitation signal, other waveform excitation signals will change in shape during transmission through the transformer, which will bring difficulties to subsequent signal processing.

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