Multi-channel non-contact attitude and orbit control thrust vector system polarity testing device and method

Abstract

The invention relates to a sensing measurement and control technology, in particular to a multi-channel non-contact attitude and orbit control thrust vector system polarity testing device and method. Real-time displacement of a valve body in a thruster spray pipe relative to a spray pipe throat is measured through a photoelectric displacement sensor; and according to the measured relative displacement of the valve body, whether the polarity of the attitude and orbit control thrust vector system is consistent with a control instruction is judged, so that the polarity measurement of the attitude and orbit control thrust vector system is realized. And then whether the polarity distribution of the plurality of thruster nozzle valve bodies is consistent with a control instruction is measured. The device can synchronously obtain the real-time displacement of the valve body measured by the multiple photoelectric displacement sensors, and further determines the polarity state of the thrust vector system according to the displacement of the valve body. Whether the polarity of the thrust vector system is consistent with a control instruction can be verified, and the movement process of the valve body can be recorded, so that the movement performance of the valve body can be detected.

Description

technical field [0001] The invention belongs to the technical field of sensor measurement and control, and in particular relates to a multi-channel non-contact attitude and orbit control thrust vector system polarity testing device and method. Background technique [0002] The attitude and orbit control thrust system is mainly used for the attitude control of the final stage of the launch vehicle and various spacecraft to realize maneuvering flight missions. In the attitude-orbit control thrust system, the gas valve controls the thrust by adjusting the opening and closing and flow of the high-temperature gas generated by the gas generator. Multiple gas valves work synchronously to generate thrust in different directions to realize the orbit and attitude control of the aircraft. Attitude and orbit control thrust system polarity is a key characteristic of spacecraft. The wrong polarity of the attitude and orbit control thrust system will seriously degrade the performance of t...

AI Technical Summary

Problems solved by technology

This method is greatly affected by electromagnetic noise, and it can only be used with a gain filter circuit. The system complexity is relatively high, and the state change of the spool movement process cannot be obtained.

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