Safety protection design method for adaptive augmentation controller of carrier rocket

By adjusting the structure of the adaptive augmentation controller and limiting its loop, the shortcomings of the controller safety protection design in the launch vehicle are solved, and the stability and adaptability of the control signal are improved, ensuring the reliability of the system and engineering application effect.

CN119882415AActive Publication Date: 2025-04-25SHANGHAI AEROSPACE CONTROL TECH INST
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Patent Information

Application Number
CN202411753397.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-04-25
Estimated Expiration
2044-12-02

AI Technical Summary

Technical Problem

The prior art has shortcomings in the safety protection design of adaptive augmented controllers in launch vehicles, and cannot effectively protect the frequency characteristics of the control signal, and cannot realize local isolation and autonomous switching functions when branch calculation abnormalities.

Method used

By adjusting the structure of the adaptive augmentation controller, limiting design is performed for the parameters of the error term and damping term circuit, and introducing a limiting and trigger access mechanism of the output rate of change into the output circuit to ensure the safety and adaptability of the controller.

Benefits of technology

It realizes all-round safety protection for the adaptive augmented controller of the launch vehicle, ensures the stability and adaptability of the control signal, avoids singular calculations and additional interference, and improves the reliability of the system and engineering application effect.

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Abstract

The invention discloses a safety protection design method for a self-adaptive augmentation controller of a carrier rocket, and the method comprises the steps: simplifying an error term of the self-adaptive augmentation controller, and obtaining a single-input-output AAC controller; amplitude limiting design is carried out on parameter angular rate deviation delta omega, an error term er, a carrier rocket attitude angle # imgabs0 # and a damping term ys signal of an error term loop and a damping term loop of the single-input-output AAC controller; carrying out amplitude limiting on an output channel of the output loop, and carrying out amplitude limiting on the output change rate of the AAC controller; and setting a trigger access mechanism for the output change rate of the single-input-output AAC controller. According to the safety protection design method for the self-adaptive augmentation controller of the carrier rocket, the safety protection design problem of the self-adaptive augmentation controller adopted by the carrier rocket is solved, and the engineering application effects of being beneficial, harmless, easy and convenient to design, flexible and reliable are achieved.
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