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A LMI-based approach is proposed to design a quadratically stable flux observer for an induction motor. The resulting observer is a parametrically varying dynamic system that insures a L2-gain attenuation between the exogenous input and the flux estimation error of the augmented plant. Its performance is evaluated and compared with those of the Verghese observer.
New methods for obtaining observer-based forms of descriptor controllers are presented in this paper. The derived controller is input-output equivalent to the initial controller with a separated estimation/control structure. The general form includes a static control and estimation gains with or without an extra descriptor Youla parameter. A numerical example demonstrates the effectiveness of the...
This paper addresses the design of H2 gain scheduled observer based controllers for rational linear parameter varying systems (LPV). Such systems are equivalently recast as affine descriptor LPV systems. The stability of the closed loop is proved and the H2 performance is ensured thanks to a Youla parameter optimization. A numerical example is presented to illustrate the efficiency of the method.
Web handling systems are complex systems requiring more and more effective control laws to deal with very high speed. Some interesting results have been recently obtained with H2 or Hinfin multivariable control strategies. However such solutions have the drawback to lead to centralized controller difficult to implement on large-scale systems. The use of structured controller is therefore necessary...
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