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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (11): 2229-2240.doi: 10.3969/j.issn.1000-1093.2019.11.007

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Robust Multi-objective Linear Parameter-varying Control for Hypersonic Vehicle

CAI Guangbin1,2, ZHAO Yang1, ZHANG Shengxiu1, YANG Xiaogang1   

  1. (1.School of Missile Engineering, Rocket Force University of Engineering, Xi'an 710025, Shaanxi, China;2.School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China)
  • Received:2018-10-16 Revised:2018-10-16 Online:2019-12-31

Abstract: A robust multi-objective linear parameter-varying (LPV) control method based on pole assignment in specified region is proposed for longitudinal flight control of air-breathing hypersonic vehicle with wave-rider configuration. A longitudinal nonlinear mechanism model of air-breathing hypersonic vehicle is presented, which is used for obtaining its rigid LPV model. A design method of LPV state feedback control system based on pole assignment in specified region is proposed. The robust stability, disturbance rejection and tracking performance of the system are constrained to realize the multi-objective robust tracking control of LPV system by extended linear matrix inequality. The conservatism of this method is reduced by introducing the slack variables to decouple the Lyapunov function matrix and system matrix. The designed controller is applied to the nonlinear mechanism model of hypersonic vehicle for simulation proof. The simulated results show that the designed controller can be used to make the closed-loop feedback control system effectively track the change of command signals, and the system has good dynamic performance and strong anti-interference ability. Key

Key words: hypersonicvehicle, linearparameter-varyingcontrol, multi-objectivecontrol, slackvariable, robusttracking

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