Magnetoelectric rotating speed sensor suitable for large-spacing measurement

Abstract

The invention relates to a magnetoelectric rotating speed sensor suitable for large-spacing measurement. The magnetoelectric rotating speed sensor comprises an armature framework, an enameled wire coil, a shell, an insulating sleeve, an insulating spacer, a lead, a connector and a shaft end bolt embedded with a permanent magnet, wherein the armature framework, the enameled wire coil, the insulating sleeve and the insulating gasket are assembled into an assembly, the assembly is installed inside the shell, the enameled wire coil and the connector are connected through a lead, and after connection is completed, potting is performed and the connector is fixed to the shell to form a magneto-electric rotating speed sensor sensitive assembly, the shaft end bolt is installed on a rotating shaft to be measured, periodic magnetic field changes are formed through the permanent magnet, and the assembly is installed in the magnetic field change range, so that the enameled wire coil generates sinusoidal alternating current signals, and then the alternating current is periodically converted into revolutions. The magnetoelectric rotating speed sensor has the advantages that large-spacing non-contact measurement between the sensor and the rotating shaft can be realized, the output amplitude is large, and the vibration resistance is strong.

Description

technical field [0001] The invention relates to a magnetoelectric rotational speed sensor suitable for large distance measurement, belonging to the technical field of testing. Background technique [0002] The aerospace engine is a high-temperature, high-speed rotating mechanical device. Its working state is different from that of ordinary rotating machinery. It is in a harsh environment of high temperature and vibration. Vibration resistance and other characteristics. With the development of my country's aerospace technology, rocket launch missions are increasing year by year. The engine is the source of rocket power. The monitoring of engine working status is very important in test run and flight, which directly affects the evaluation of engine performance. The speed of rocket engine is a reflection of engine operating conditions Whether it is a conventional engine or a liquid oxygen kerosene engine, the turbo pump speed is considered as the preferred parameter for fault d...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies and demands of the existing technology, the purpose of the present invention is to provide a magnetoelectric speed sensor suitable for large distance measurement, so as to solve the problem that the output amplitude of the existing speed sensor is small, and the vibration frequency is high and the detection environment is high. Abnormal problems are prone to occur in the high temperature state

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