摘要
系统控制精度、抗干扰能力和飞行过载是衡量地形跟随系统性能的三个重要的指标;通过对传统的基于航迹角PID控制的地形跟随系统进行分析,引入法向加速度信号,构建了一种模糊PID控制器,设计出一种基于法向加速度模糊PID控制的地形跟随系统;在MATLAB平台下对该系统进行数字仿真,结果表明:所设计系统的法向过载幅值减小,系统的越顶超调显著降低,在常值干扰信号下系统抗干扰能力明显优于传统PID控制系统;验证了所设计方案的合理性和可行性。
The controlling precision, anti-interference ability and flight overload are three important target to measure the terrain fol-lowing system＇s performance. It introduced the normal acceleration signal, structured a fuzzy-PID controller, by analyzing the traditional terrain following system based on PID controlling of the track angle, and designed a kind of fuzzy PID terrain following system on the basis of normal acceleration. Carrying on digital simulation to this system under MATLAB platform, the result shows that the amplitude of over load curve of designed system is obviously reduced, the system＇s controlling precision and anti interference ability are improved. The ration-ality and feasibility of the designed scheme were verified.
出处
《计算机测量与控制》
北大核心
2013年第4期920-923,共4页
Computer Measurement &Control
关键词
地形跟随
模糊PID
法向加速度
法向过载
仿真
terrain following
fuzzy--PID
normal acceleration
normal overload
simulation
