Calibration method and device for acceleration signal of suspension/guide sensor

Abstract

The invention discloses a calibration method and device for an acceleration signal of a suspension / guide sensor. According to the method and the device, the angle of the three-axis accelerometer is calibrated in real time through the angle value acquired by the three-axis gyroscope. The calibration of the acceleration signal acquired by the triaxial accelerometer is realized, the original noise inthe acceleration signal can be greatly reduced, the output precision of the acceleration signal is improved, the subsequent signal processing difficulty of the levitation controller is reduced, and the stable operation of the maglev train is ensured. According to the method, data acquisition of the three-axis accelerometer and the three-axis gyroscope is synchronized, the calibrated accelerationsignals are obtained through processing in the data processing module, real-time following is not needed, the calibration processing process is relatively simple, the calculated amount is small, and the calculation speed is high.

Description

technical field [0001] The invention belongs to the field of levitation control of maglev trains, and in particular relates to a method and a device for calibrating the output acceleration signal of a levitation / guidance sensor through a three-axis gyroscope and an FPGA filter. Background technique [0002] In recent years, maglev technology has developed rapidly in China, and at the same time, commercial operation lines are gradually increasing. Among them, the suspension / guidance sensor, as an important component, plays a particularly critical role in the reliable operation of the suspension control program. In the field of low-speed maglev, taking Changsha Maglev as an example, levitation sensors are mainly used, while the guidance is passive and does not require guidance sensors. In the field of medium and high-speed maglev, take Shanghai high-speed maglev as an example, the suspension and guidance need corresponding suspension and guidance sensors to transmit correspon...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method and device for calibrating the acceleration signal of the suspension / guidance sensor to solve the problem that the suspension controller is difficult to process due to large signal noise, and the data volume of the Kalman filter for signal pre-processing Large, slow processing issues

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