Embedded Air Data Sensing System Information Fusion Ground Verification System

Abstract

The invention discloses a system for conducting ground-based validation on the information fusion of a flush air data sensing system. The system herein includes an air pressure simulation test systemand a closed-loop test system. The air pressure simulation test system includes an air pressure simulation designated device and a flush air test computer. The air pressure simulation designated device is intended for applying air pressure to respective air pressure measurement channel of the flush air data sensing system. The flush air test computer is intended for acquiring the air pressure value which is transmitted to respective air pressure measurement channel by the air pressure designated device and the corresponding channel measurement value that is output by the flush air data sensingsystem, and acquiring a dynamic response model of different air pressure measurement channels of the flush air data sensing system. The closed-loop test system includes a sensor, a controller, an execution mechanism, a dynamics simulator and a test interpretation system. According to the invention, the system achieves ground-based validation of the information fusion of the flush air data sensingsystem by means of dynamic response difference of multiple air pressure measurement channels.

Description

technical field [0001] The invention relates to an information fusion ground verification system of an embedded atmospheric data sensing system, which belongs to the field of ground testing of the aerospace vehicle GNC system. Background technique [0002] The flight control of the aircraft depends on the accurate measurement of atmospheric data, and the system for measuring atmospheric data is called the atmospheric data sensing system (ADS system). [0003] The traditional probe-type air data sensing system is based on the pitot tube, which generally includes a pitot tube, an angle-of-attack sensor, and a side-slip angle sensor. Pitots are used to measure static and dynamic pressure. The angle of attack sensor and the angle of sideslip sensor are used to measure the angle of attack and sideslip angle respectively. During the hypersonic flight of the aerospace vehicle, it interacts with the surrounding atmosphere to generate a bow-shaped strong shock wave around the head ...

AI Technical Summary

Problems solved by technology

[0008] The existing ground closed-loop test technology of the GNC system of aerospace vehicles does not model the dynamic response test of each atmospheric pressure measurement channel of the FADS system, resulting in that the dynamic excitation sent by the dynamic simulator to the FADS system through the ground inspection interface does not take into account the differences. The dynamic response of the pressure measurement channel cannot simulate the actual measurement performance of each pressure measurement channel of the FADS system during flight, and cannot fully verify the effectiveness of the dynamic response of different pressure measurement channels on the information fusion algorithm and autonomous fault diagnosis algorithm of the FADS system, nor can it Assess the impact on the entire GNC system, and have little guiding significance for the improved design of the GNC system

Images