Ferreres, Gilles; Fromion, V.; Duc, G.; M’Saad, Mohammed Application of real/mixed \(\mu\) computational techniques to an \(H_ \infty\) missile autopilot. (English) Zbl 0857.93066 Int. J. Robust Nonlinear Control 6, No. 8, 743-769 (1996). Summary: A multivariable missile autopilot is synthesized using an \(H_\infty\) approach. A tradeoff is achieved between performance, actuators solicitation and uncertainties in the actuators and bending modes dynamics. Robust stability and performance of the control law are then studied in the face of large real parametric aerodynamic uncertainties: computational techniques for real and mixed \(\mu\) analysis (namely De Gaston and Safonov’s, Dailey’s, Jones’, Young and Doyle’s, Fan, Tits and Doyle’s and Safonov and Lee’s methods) are briefly reviewed before being used to compute either the exact value, or an interval of the structured singular value. For small amounts of parameters, the upper and lower bounds provided by these methods are compared to the exact value, computed by De Gaston and Safonov’s method. For larger amounts of parameters, NP hardness of the problem prohibits the use of algorithms which compute the exact value. As an alternative, the use of polynomial-time methods for computing upper and lower bounds leads in our examples to accurate approximates of the real and mixed structured singular values. Cited in 1 Document MSC: 93C95 Application models in control theory 70E15 Free motion of a rigid body 93B35 Sensitivity (robustness) Keywords:robust stability; missile autopilot; \(H_ \infty\); parametric aerodynamic uncertainties; structured singular value PDFBibTeX XMLCite \textit{G. Ferreres} et al., Int. J. Robust Nonlinear Control 6, No. 8, 743--769 (1996; Zbl 0857.93066) Full Text: DOI