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An automatic procedure for H∞ regulator tuning is proposed. Design parameters are calculated based on a few parameters of a simple plant model, which are obtained by an identification method. With this approach adequate performance and robustness are guaranteed, and it is available an automatic H∞ design method for the user. A fine-tuning of the controller can be made depending on two parameters,...
This paper proposes a new tuning method for PI controllers in two-degree-of-freedom (2DOF) structure. In design approach, first order plus dead time (FOPDT) model is used. The aim is to have good set-point response and disturbance rejection and also maximum robustness to model uncertainties. The tuning strategy is based on using Butterworth rules and genetic algorithm optimization. Simulation results...
Feedback control problems for distributed parameter systems arise in a variety of physical, chemical, biological, and mechanical systems. This paper exploits the algebraic structure of the system of ordinary differential equations that arise from spatial discretization of the partial differential equation (PDE) to analyze and design feedback controllers that are robust to bounded perturbations in...
This paper presents a design procedure for access and congestion control in communication networks. Motivated by an analysis of the characteristics of communication networks, the proposed approach makes use of model-based control methodologies, i.e. Internal Model Control, Model Reference Control and the Smith's principle. The design procedure is then applied to the problems of access control in satellite...
Time-delay control problem for the system with an integrator becomes especially difficult when the disturbance input is a time-varying signal. This paper presents a nonminimum phase disturbance observer (DOB) approach to design a robust controller for input time-delay systems with time-varying disturbances. Position control problem for a simple pendulum system with input time-delay has been considered...
This paper presents a generalization of the internal model control (IMC) approach to feedforward control action generation. As it is well known, one of the distinctive features of the IMC formulation is the possibility to distinguish between the nominal and uncertain situation. However the consideration of the presence of uncertainty for the feedforward part of the controller is not as simple as it...
This communication provides an approach for the application of PID controllers within a cascade control system configuration. Based on considerations about the expected operating modes of both controllers, the tuning of both inner and outer loop controllers are selected accordingly. This fact motivates the use of a tuning that, for the secondary controller, provides a balanced set-point / load-disturbance...
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