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| Non-fragile Optimal H2/LQR Control with Regional Pole Placement for Hypersonic Vehicle |
| HUANG Yi-Qing, WANG Li, SUN Chang-Yin |
| (1. School of Automation, Southeast University, Nanjing 210096, China; 2. School of Energy and Power Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China) |
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Abstract A kind of robust mixed nonfragile optimal H2/LQR control with regional pole placement was proposed for an airbreathing hypersonic vehicle (AHV). A new linear uncertain model was developed according to a nonlinear longitudinal model of an AHV and then a multiobjective nonfragile controller was designed that includes regional pole placement, robust guaranteed cost control and optimal H2 control performance indexes for the proposed linear uncertain model. The paper also took the gain variation of the controller into account due to parametric uncertainties of an AHV flight condition and the errors existed in modeling. The existed conditions of the multiobjective nonfragile controller were deduction by linear matrix inequalities (LMIs). Finally, the simulation comparisons between nonfragile controller and traditional controller that without considering the gain variation illustrate the advantages and effectiveness of our approach.
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Published: 30 March 2011
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