基于AFSMC算法的飞机飞行姿态自适应滑模控制系统

Adaptive sliding mode control system for aircraft flight attitude based on AFSMC algorithm

摘要:

传统飞机飞行姿态滑膜控制系统，存在飞机飞行姿态自适应系数稳定性差的问题，在控制过程中会受到多重因素影响，导致飞行姿态可控误差系数增大，需要辅助控制系统修正才能完成飞行姿态的控制操作。针对上述问题，提出基于AFSMC算法的飞机飞行姿态自适应滑模控制系统。系统硬件基于PID自适应滑模控制器，对飞机飞行姿态控制器进行结构设计；软件部分通过引入自适应滑模控制策略，对PID控制器姿态控制变量进行适配；引入AFSMC算法计算姿态控制器当前时间点下的运动控制方程，得到飞行姿态自适应滑模控制的最优量，完成基于AFSMC算法的飞机飞行姿态自适应滑模控制系统设计。实验结果表明，所设计系统能够在不同飞行工况下，对飞机飞行姿态作出准确控制，系统的整体控制精度范围为90%~97.4%，飞机飞行控制稳定性较好，有效提升了系统对飞机飞行姿态的控制准确度。

Abstract:

The traditional aircraft attitude sliding film control system has the problem of poor stability of the aircraft attitude adaptive coefficient. It will be affected by multiple factors during the control process, resulting in an increase in the flight attitude controllable error coefficient, and the auxiliary control system needs to be corrected to complete the flight attitude Control operation. Aiming at the above problems, an adaptive sliding mode control system of aircraft flight attitude based on AFSMC algorithm is proposed. The system hardware is based on the PID adaptive sliding mode controller, and the aircraft attitude controller is designed; the software part adopts the adaptive sliding mode control strategy to adapt the PID controller attitude control variables; introduces the AFSMC algorithm to calculate the attitude controller The motion control equation at the current time point is used to obtain the optimal amount of flight attitude adaptive sliding mode control, and the design of the aircraft flight attitude adaptive sliding mode control system based on the AFSMC algorithm is completed. The experimental results show that the designed system can accurately control the flight attitude of the aircraft under different flight conditions. The overall control accuracy of the system ranges from 90% to 97.4%. The flight control stability of the aircraft is good, which effectively improves the system’s impact on the aircraft. Control accuracy of flight attitude.