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目前我国唯一的一架变稳飞机IFSTA仅具有三自由度变稳功能,模拟能力不能满足对航迹角以及直接升力特性等的任务需要。根据国外变稳飞机研制和应用的结果,考虑工程上的实现容易性,采用俯仰、滚转、偏航、直接升力和自动油门的多自由度变稳控制是提升变稳能力的较为可行的方法。为此,应用现代控制理论中的自适应控制技术,开展了多自由度变稳控制技术研究,并在MATLAB和半物理试验台上进行了仿真验证。仿真结果表明,自适应控制技术可以显著提高空中飞行模拟的模拟精度和控制律的鲁棒性。
At present, IFSTA, the only one that stabilizes in China, has only three degrees of freedom to stabilize. Its simulation capability can not meet the mission requirements of track angle and direct lift characteristics. According to the results of the development and application of the stabilized aircraft in foreign countries, taking into account the engineering ease of implementation, the multi-degree-of-freedom steady-state control with pitch, roll, yaw, direct lift and automatic throttle is a feasible method to enhance the ability to stabilize . Therefore, the application of adaptive control technology in modern control theory has carried out research on multi-degree-of-freedom steady-state control technology and has been verified by simulation on MATLAB and semi-physical test benches. The simulation results show that the adaptive control technology can significantly improve the simulation accuracy of aerial flight simulation and the robustness of the control law.