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某型飞机前起落架气动负载模拟采用电液伺服系统 ,针对其本质非线性系统的特点采用反馈线性化将其变为可控的线性系统 ,并导出其最优控制律。文中建立了气动负载模拟系统的数学模型 ,给出了线性化及控制律的求解过程。仿真和实验结果表明 ,对于该系统采用非线性控制方法 ,系统能保证力矩跟踪性能并有效抑制前起操纵引起的多余力矩。
The aerodynamic load simulation of the front landing gear of a certain type of aircraft uses an electro-hydraulic servo system. According to the characteristics of its intrinsic nonlinear system, it uses feedback linearization to make it a controllable linear system and derives its optimal control law. The mathematical model of pneumatic load simulation system is established in this paper, and the solution of linearization and control law is given. The simulation and experimental results show that the system can ensure the torque tracking performance and effectively restrain the extra torque caused by the previous operation by adopting the nonlinear control method for the system.