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飞行器控制系统设计中的不确定性问题是国内外研究者们的研究热点问题之一。许多研究者将飞行器控制系统中的各种不确定性因素集聚在一起,构成汇总不确定项,一并进行估计或者观测,由此提出了许多种估计方法。对各种估计方法的研究现状及其应用情况进行了阐述和分析。总结起来,针对不确定性的估计方法主要包括:神经网络估计方法、自适应估计方法、干扰观测器估计方法、支持向量机估计方法和滑模控制补偿方法等。其中,干扰观测器估计方法应用最为广泛,它又包括几种不同的类型:滑模干扰观测器、非线性干扰观测器、传统干扰观测器和扩张状态观测器等。
The uncertainty of aircraft control system design is one of the research hotspots of researchers at home and abroad. Many researchers put together a variety of uncertainties in the aircraft control system to form a summary of uncertainties, together with the estimation or observation, thus put forward many kinds of estimation methods. The research status and application of various estimation methods are described and analyzed. To sum up, the methods for estimating uncertainty mainly include neural network estimation method, adaptive estimation method, interference observer estimation method, support vector machine estimation method and sliding mode control compensation method. Among them, the disturbance observer estimation method is the most widely used, and it includes several different types: sliding mode disturbance observer, nonlinear disturbance observer, traditional disturbance observer and extended state observer.