Hypersonic aerocraft nonlinear control method based on high-gain observer
A high-gain observer, nonlinear control technology, used in adaptive control, general control systems, control/regulation systems, etc., can solve problems such as inability to meet progressive tracking and difficulty in proving system stability.
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[0105] A high-gain observer-based nonlinear control method for a hypersonic vehicle of the present invention will be described in detail below in conjunction with the embodiments and drawings.
[0106] A hypersonic vehicle nonlinear control method based on a high-gain observer of the present invention uses a hypersonic vehicle control design model as a controlled object, and estimates system unknown functions and external disturbances through a high-gain observer. The high-gain observer is a special design method of the observer, and its main property is robustness to uncertain parameters of nonlinear functions. And when the observer gain is high enough, the output feedback controller has the performance of state feedback. The invention respectively obtains the bounded values of the channel unknown functions of speed, height and angle of attack, and then uses a high-gain observer to estimate. The difficulty of this method is how to analyze the joint stability of the observe...
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