论文部分内容阅读
为满足ADS-33E-PRF所规定的飞行品质,有效克服模型外部扰动的影响,提出了一种基于线性自抗扰控制(LADRC)的直升机姿态控制策略.建立UH-60A直升机的飞行动力学模型和风模型,并进行配平计算以验证动力学模型和配平算法的准确性.在增稳反馈回路的基础上,基于单输入单输出的二阶LADRC控制器搭建了UH-60A的姿态解耦控制回路.针对ADS-33E-PRF品质要求,将控制器参数整定转变为时域与频域内的约束优化问题,结合H∞综合算法和最速下降算法进行了优化计算.对姿态控制器的控制效果进行了品质评估,并在大气扰动下对姿态保持控制进行了仿真,仿真和品质分析表明基于LADRC的姿态控制系统具有良好的解耦性能和抗扰性.
To meet the flight quality of ADS-33E-PRF and effectively overcome the influence of disturbance outside the model, a helicopter attitude control strategy based on LADRC is proposed. The flight dynamics model of UH-60A helicopter Wind model and the balance calculation to verify the accuracy of the dynamic model and the trim algorithm.On the basis of the stabilization feedback loop, the attitude decoupling control loop of UH-60A is built based on the single-input and single-output second-order LADRC controller According to the quality requirements of ADS-33E-PRF, controller parameter tuning is transformed into constrained optimization problems in time domain and frequency domain, and H∞ synthesis algorithm and steepest descent algorithm are used to optimize the calculation. The control effect of attitude controller The quality control of the attitude control system is simulated under atmospheric disturbances. Simulation and quality analysis show that the attitude control system based on LADRC has good decoupling performance and immunity.