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Standard analysis and synthesis techniques for digital control systems assume that the total time-delay in the feedback loop is negligible or precisely known. This might not be the case in some applications. Such systems are quite common in industry, especially due to strong trends towards networking. Under certain circumstances the network-induced delays can be considered constant, and yet it might...
In this paper we propose a novel approach to design a set-point filter based on a dynamic inversion technique. First, a suitable command signal is designed in order to obtain a smooth monotonic output transition. Then, a set-point filter is determined based on the synthesized command signal. The filter is computed by minimizing the 2-norm difference between the command signal and the filter step response...
Conventional control strategies, used in shunt active power filters (SAPF), employ real-time instantaneous harmonic detection schemes which are usually implemented with digital filters. This increases the number of current sensors on the filter structure which results in high cost. Furthermore, these detection schemes introduce time delays which can deteriorate the harmonic compensation performance...
This paper discusses a design of model following control system (MFCS) for linear system with time-delays. The bounded property of the internal states for the control is given and the utility of this control design is guaranteed. It is confirmed on basis of numerical examples that the output signal of the control system asymptotically follows the reference signal in the case of the existence of disturbances.
Smith Predictor control is theoretically a good solution to the problem of controlling the time delay systems. However, it seldom gets use because it is almost impossible to find out a precise mathematical model of the practical system and very sensitive to uncertain system with variable time-delay. In this paper is concerned with a design method of smith predictor for temperature control system by...
Within the framework of the factorization approach, we present new parametrizations of a class of causal stabilizing controllers. This will result stabilizing controllers that have the multiple-order lag elements for continuous-time LTI systems and stabilizing controllers that have multiple-delay elements for discrete-time LTI systems.
The paper investigates the problem of designing a digital controller with guaranteed performance for a continuous-time plant with time-delay. The proposed design technique is based on the parametric transfer function concept and numerical optimization.
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