侧杆负载特性及人机闭环模型研究

Research on Side-stick Load Characteristics and Pilot-Aircraft Closed-loop Model

在电传操作系统中,侧杆比中央驾驶杆在飞行员舒适度、驾驶舱空间利用和视觉感受上更有优势。侧杆负载参数的设计包括杆启动力,杆力-杆位移梯度和杆阻尼系数。为了从理论角度设计侧杆负载特性,通过分析侧杆的动态特性,运用最优化原则及求解最优值的方法,得到最优侧杆负载参数的数学计算公式。通过建立驾驶员模型、侧杆人感系统、指令增益、前置滤波器、飞控系统与飞机模型五个环节,对侧杆人机闭环模型进行分析仿真,得到杆力和杆位移控制下的俯仰角和滚转角的跟踪曲线。结果表明,控制俯仰角时,杆位移控制比杆力控制效果好,控制滚转角时,杆位移控制与杆力控制的控制效果一致。

In order to design the side-stick load characteristics from a theoretical point of view, we established the dynamic characteristics of side-stick, used the principle of optimization and the method of solving optimal value, and obtained the mathematical formula of optimal side-stick load parameters. Then, by establishing the mode of pi- lot, side-stick feeling system, directive gain, prefiher, flight control system and aircraft model, we analyzed and simulated the pilot-aircraft closed loop, the tracking curve of pitch angle and roll angle were obtained under the con- trol of the lever force and displacement. The results show that when controlling the pitch angle, the control effect of displacement is better than the force, while when controlling the roll angle, the control effect of displacement and force is as the same.