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This paper researches a kind of anti-surge control strategy for centrifugal compressor. In order to solve the problem of narrow operating range of the traditional anti-surge control, model predictive control is introduced. First ratio and mass flow nonlinear predictive models of compressor's pressure are developed by LS-SVM (Least Square Support Vector Machine). Then the anti-surge predictive controller...
In this paper we discuss the minimum-time orbit transfers of solar sail spacecraft for Mercury sample return missions using solar radiation pressure. In order to find the minimum-time trajectory transfers, the optimal pitch angle of the solar sail has to be determined. We transform the optimal control problem to parameterized nonlinear programming problem by using the direct shooting method. Then,...
The automatic landing control coordinating the Three-Dimensional (3D) position and 3D attitude with strong robustness and high precision is proposed for Unmanned Aerial Vehicle (UAV). The generalized landing trajectory including 3D position and 3D attitude is designed based on the optimization of the steady landing condition to guide the landing. The Altitude and pitch angle are quasi-decoupled by...
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