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The usage of communication channels introduces time delays into load frequency control (LFC) schemes. Those delays may degrade dynamic performance, and even cause instability, of a closed-loop LFC scheme. In this paper, a delay-dependent robust method is proposed for analysis/synthesis of a PID-type LFC scheme considering time delays. The effect of the disturbance on the controlled output is defined...
This paper studies reachability problems in discrete time affine systems on simplices-that is, how to steer the states in a simplex to a target polytope in finite time. Reachability problems in a discrete time setting have several distinct features from those in a continuous time setting and the solvability depends not only on the simplex itself but also on the target polytope. In this paper we first...
One problem with existing methods of designing repetitive control systems is that they cannot simultaneously optimize the parameters of a low-pass filter and a repetitive controller. This paper presents a method of doing that for a repetitive control system containing a class of uncertain plants. First, linear matrix inequalities for calculating the parameter of a low-pass filter are derived under...
This paper is concerned with the problem of delay-dependent Hinfin control for linear discrete-time systems with time-varying delay. A new finite sum inequality is first established to derive a delay-dependent condition, under which the resulting closed-loop system is asymptotically stable (internally stable) with a prescribed Hinfin attenuation level via a memoryless state feedback. Then, an iterative...
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