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Robust state-derivative feedback LMI-based designs for multivariable linear systems. (English) Zbl 1133.93022
Summary: In some practical problems, for instance in the control systems for the suppression of vibration in mechanical systems, the state-derivative signals are easier to obtain than the state signals. New necessary and sufficient linear matrix inequalities (LMI) conditions for the design of state-derivative feedback for multi-input (MI) linear systems are proposed. For multi-input/multi-output (MIMO) linear time-invariant or time-varying plants, with or without uncertainties in their parameters, the proposed methods can include in the LMI-based control designs the specifications of the decay rate, bounds on the output peak, and bounds on the state-derivative feedback matrix \(K\). These design procedures allow new specifications and also, they consider a broader class of plants than the related results available in the literature. The LMIs, when feasible, can be efficiently solved using convex programming techniques. Practical applications illustrate the efficiency of the proposed methods.

MSC:
93B52 Feedback control
93C35 Multivariable systems, multidimensional control systems
90C25 Convex programming
93C05 Linear systems in control theory
Software:
LMI toolbox
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