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Sliding mode design based on Lyapunov matrices is proposed as roll autopilot for a tail controlled missile. The search of Lyapunov matrix for systems with unmatched uncertainties is formulated in terms of linear matrix inequality. The proposed scheme ensures robust roll position control even in the presence of large mismatched parametric uncertainties and external disturbances. The performance of...
Liquid sloshing has been an important problem in several areas including launch vehicle. This paper presents a novel way of designing the sliding surface to deal with unmatched uncertainties in system matrix and input matrix. And yet tailor desired dynamic performance for a slosh problem. A simple pendulum model has been considered to represent the lateral slosh. Partial feedback linearization has...
We deal with the design of robust controllers for linear time invariant uncertain singularly perturbed systems using periodic output feedback. The singularly perturbed uncertain system is represented using interval matrix representation. The fast and slow subsystems are obtained using interval arithmetic. The fast modes are assumed to be stable. The periodic output feedback gain is obtained for slow...
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