电动飞机大功率泵阀协调作动优化控制仿真  

Optimal Control Simulation of Electric Plane High-Power Pump and Valve Coordinated Actuation

作　　者：郭创[1] 姚斌[1] 郑晓飞[1] 王云鹏[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《计算机仿真》2017年第7期31-38,共8页Computer Simulation

基　　金：国家自然科学基金资助项目(61304120)

摘　　要：为解决机载泵阀协调作动系统存在相乘非线性,在参数摄动与负载干扰下很难达到满意的控制效果的问题,提出了一种基于反馈线性化的滑模变结构控制方法。首先,针对作动系统的非线性模型,利用反馈线性化将其变换为一个线性子系统和非线性部分。其次,在保证系统零动态稳定性的前提下,对线性模型设计了滑模变结构控制器,为了提高滑动模态的动态品质,并削弱滑模控制的输出抖振,结合最优控制与模糊控制理论,分别对控制器的切换函数与趋近律进行了设计。利用MATLAB/Simulink软件进行仿真验证。仿真结果表明,上述控制方法提高了控制效果,使系统具有更好的动态响应特性与精度。极大改善了机载泵阀协调作动系统的综合性能。Due to multiplicative nonlinearity, parameter perturbation and load disturbance, airborne pump and valve coordinated actuation system is difficult to achieve satisfactory control effect. A sliding mode control method based on feedback linearization is proposed. Firstly, the nonlinear model is transformed to a linear subsystem and nonlinear part by using feedback linearization. Then, under the premise of ensuring the zero dynamic stability, a slid- ing mode controller is designed for the linear model. To improve the dynamic quality of sliding mode and reduce out- put chattering of the sliding mode control, the switching function and reaching law are designed by combining opti~ mum control and fuzzy control theory. The simulation results through MATLAB/Simulink software show that the con- trol method can effectively improve the control effect with good dynamic response and precision.

关 键 词：泵阀协调作动系统 反馈线性化 滑模变结构控制 最优控制 模糊控制 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]