Matthew C. Turner

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—This paper considers closed-loop quadratic stability and 2 performance properties of linear control systems subject to input saturation. More specifically, these properties are examined within the context of the popular linear antiwindup augmentation paradigm. Linear antiwindup augmentation refers to designing a linear filter to augment a linear control(More)
—This paper treats the problem of synthesizing anti-windup compensators that are able to handle plant uncertainty in addition to controller saturation. The uncertainty considered is of the frequency-weighted additive type, often encountered in linear robust control theory, and representative of a wide variety of uncertainty encountered in practice. The main(More)
— This paper describes an approach to synthesising anti-windup compensators which can improve the behaviour of systems subject to actuator saturation while also taking into account uncertainty in the system. The class of uncertainty considered is reasonably large and, moreover, is of the type often used in practice and often considered in linear robust(More)
The anti-windup problem is formulated in discrete-time using a configuration which effectively decouples the nominal linear and nonlinear parts of a closed loop system with constrained plant inputs. Conditions are derived which ensure an upper bound on the induced l 2 norm of a certain mapping which is central to the anti-windup problem. Results are given(More)
I n control engineering, linear systems are the basic models for approximating practical objects, while identification and control methods for linear systems are indispensable tools for optimizing certain performances of the system under consideration. Besides engineering, linear models with related identification and control methods are widely used in(More)
— This paper addresses the problem of sensor saturation , in otherwise linear systems, by using an anti-windup like design strategy. The focus is on obtaining sufficient conditions which guarantee global stability and L 2 gain. It transpires that the sufficient conditions obtained, which are expressed as linear matrix inequalities (LMI's), take the form of(More)