Adaptive fuzzy mixed H2 / H lateral control of nonlinear missile systems

Yung-Yu Chen, Bor Sen Chen, Chung Shi Tseng

Research output: Contribution to conferencePaperpeer-review


An adaptive fuzzy mixed H2 / H lateral control of nonlinear missile systems with uncertain disturbances considered is proposed to achieve H2 quadratic tracking with Hdisturbance rejection. This approach can be applied to control the lateral directional dynamics of the missiles at high angle of attack or generate moments on missile operating in flight regimes where the effectiveness of conventional aerodynamic surfaces is reduced. Using an adaptive fuzzy approximation method, the uncertain nonlinear model of the missile system is estimated. Then, by a mixed H2 / H control design, the effects of external disturbance and fuzzy approximation error as well as consumed energy of the controller is minimized. By the skew symmetric property of the missile system and adequate choice of state variable transformation, this problem can be reduced to solve two algebraic Riccati-like equations. Furthermore, a closed-form solution to these two algebraic equations can be obtained with very simple form for the preceding control design. This work was supported by National Science Council, Taiwan, R.O . C., under grant NSC 91-2213-E-007-014.

Original languageEnglish
Number of pages5
Publication statusPublished - 2003 Jul 11
EventThe IEEE International conference on Fuzzy Systems - St. Louis, MO, United States
Duration: 2003 May 252003 May 28


OtherThe IEEE International conference on Fuzzy Systems
CountryUnited States
CitySt. Louis, MO

All Science Journal Classification (ASJC) codes

  • Software
  • Theoretical Computer Science
  • Artificial Intelligence
  • Applied Mathematics

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