Attitude-motion Coordinated Control Method for Hypersonic Vehicle Based on Coordination Factor

Abstract

The present invention discloses a hypersonic aircraft attitude motion coordination control method based on coordination factors, belonging to the flight attitude control field. The coupling of an attitude model is divided into three modes consisting of motion coupling, inertia coupling and control surface control coupling aiming at the strong coupling problem of the aircraft attitude motion. Three coordination factors are respectively designed for the three coupling modes. The attitude system is divided into a quick loop and a slow loop, and robust-adaptive controllers of the two loops are respectively designed. The coordination factors and the robust-adaptive controllers are combined to deduce coordination moment, the coordination moment is distributed to a control surface, and the deflection of the control surface is employed to realize coordination. The hypersonic aircraft attitude motion coordination control method based on the coordination factors effectively improves the control efficiency of the control surface, especially reduces the number of times of the deflection of the control surface and saves the energy.

Description

technical field [0001] The invention discloses a hypersonic aircraft attitude motion coordination control method based on a coordination factor, and belongs to the technical field of spacecraft attitude control. Background technique [0002] Hypersonic aircraft has important military strategic significance and is the killer weapon for sky warfare in the 21st century. At present, the research on hypersonic vehicles has received widespread attention from all over the world. However, due to the rapid and long-span flight, it also brings great challenges to the control of the aircraft. Due to the characteristics of strong coupling and strong nonlinearity, hypersonic speed has become a research hotspot at present. [0003] In recent years, many valuable scientific research achievements have been made in the attitude motion control of hypersonic vehicles. Many scholars have carried out corresponding work on the strong coupling problem of aircraft attitude motion. Some scholars ...

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Problems solved by technology

Although the above methods have achieved the coordination of attitude motion to a certain extent and laid the foundation for the follow-up work, due to the complexity of the nonlinear dynamics of hypersonic vehicles, these achievements are not clear for the coordination mechanism to be actively linked, suppressed, or Take advantage of coupling effects

The main problem of the strong coupling of hypersonic aircraft attitude motion is reflected in the mutual influence between variables. Some coupling effects are beneficial to the control of the aircraft, and some coupling accumulations are fatal to the control of the aircraft. Long-term coupling accumulation will lead to aircraft instability of posture

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