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Foreword The subject of control system synthesis, and in particular robust control, has had a long and rich history. Since the 1980s, the topic of robust control has been on a sound mathematical foundation. The principal aim of robust control is to ensure that the performance of a control system is satisfactory, or nearly optimal, even when the system to be(More)
It is a joy to feel this feedback from so many of you here today. You just heard from Alan Laub, our Society's president, about my quarter of a century in Urbana, Illinois, the birthplace of Hendrik Bode. Indeed, much of what I know about systems, control and feedback I learned from my colleagues and students at the University of Illinois, the conferrer of(More)
Over the past decade, several books have been published that deal with the subject of control systems with constraints, whether the constraints are on the states of the system or on the control inputs of the system (see, e.g., [2]–[5]). The present book studies in detail the problem of output regulation under constrained and unconstrained inputs for linear(More)
It is known that a linear time-invariant system subject to \input saturation" can be globally asymptotically stabilized if it has no eigenvalues with positive real parts. It is also shown by Fuller 4] and Sussmann and Yang 12] that in general one must use nonlinear control laws and only some special cases can be handled by linear control laws. In this paper(More)
In this paper we consider the output synchronization problem for heterogeneous networks of linear agents. The network’s communication infrastructure provides each agent with a linear combination of its own output relative to that of neighboring agents, and it allows the agents to exchange information about their own internal observer estimates. We design(More)
We consider linear time-invariant multiple-input multipleoutput systems that are controllable and observable, where each output component is saturated. We demonstrate by constructive design that such systems can be globally asymptotically stabilized by output feedback without further restrictions. This result is an extension of a previous result by(More)
We revisit the problem of semi-global stabilization of linear discrete-time systems subject to input saturation and give an algebraic Riccati equation (ARE)-based approach to the proof of a fact we established earlier ((?]), i.e., a linear discrete-time system subject to input saturation is semi-globally stabilizable via linear feedback as long as the(More)