Dynamically tuned gyroscope and angular position sensor thereof

Abstract

The invention discloses a dynamically tuned gyroscope and an angular position sensor thereof. The angular position sensor comprises at least two electromagnetic induction coils fixed relative to the position of a gyroscope, wherein the electromagnetic induction coils are arranged in the circumferential direction of a magnetic steel rotor, the two oppositely-arranged electromagnetic induction coilsare symmetrically relative to the rotation axis of the magnetic steel rotor, the magnetic steel rotor generates a sinusoidal changing magnetic field during the rotation, each electromagnetic induction coil is positioned in the sinusoidal changing magnetic field, and the wiring terminals of each electromagnetic induction coil are connected to voltage treatment and acquisition equipment. With the angular position sensor of the present invention, the anti-electromagnetic-interference capability is improved, the angular position measurement range is expanded, and the linearity of the output signal is increased, such that the angular position measurement accuracy, the range and the performance stability of the gyroscope are ensured.

Description

technical field [0001] The invention relates to the technical field of angle measurement, in particular to an angular position sensor used for dynamic tuning gyroscopes. The invention also relates to a dynamically tuned gyroscope comprising such an angular position sensor. Background technique [0002] Existing power-tuned flexible gyroscopes mainly use inductive sensors to measure angular displacement. The typical inductive sensor used to measure angular position is a φ angle coil. This kind of inductive sensor has a small effective range and is often used to measure small The linear displacement or angular displacement, its linearity is better within 10°, and the linearity becomes worse when it exceeds 10°, which has a great impact on the decoupling accuracy. When measuring a large range on a gyroscope, its nonlinearity index is poor. Seriously affect the performance of the gyroscope sensor; moreover, the inductance element is more sensitive to the change of the ambient t...

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Problems solved by technology

[0002] Existing power-tuned flexible gyroscopes mainly use inductive sensors to measure angular displacement. The typical inductive sensor used to measure angular position is a φ angle coil. This kind of inductive sensor has a small effective range and is often used to measure small The linear displacement or angular displacement, its linearity is better within 10°, and the linearity becomes worse when it exceeds 10°, which has a great impact on the decoupling accuracy. When measuring a large range on a gyroscope, its nonlinearity index is poor. Seriously affect the performance of the gyroscope sensor; moreover, the inductance element is more sensitive to the change of the ambient temperature, when the ambient temperature changes, it will lead to the change of the winding parameters and the deformation of the iron core size, which will cause the output current or voltage to change and cause errors; in addition, If the power supply frequency and voltage are unstable, the detection accuracy will also be affected by the fluctuation of electrical parameters, resulting in large errors

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