Topic
Open-loop controller
About: Open-loop controller is a research topic. Over the lifetime, 16148 publications have been published within this topic receiving 224014 citations. The topic is also known as: non-feedback controller & open-loop control law.
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TL;DR: In this article, a quadratic boost converter based on the reduced redundant power processing (R 2 P 2 ) principle, as well as the controller design methodology using current-programmed control to satisfy the specifications of output voltage regulation, is presented.
Abstract: In the past years, the development of topologies with step-up capacities has been important to satisfy the new requirement of renewable source energy. This study presents a quadratic boost converter based on the reduced redundant power processing ( R 2 P 2 ) principle, well as the controller design methodology using current-programmed control to satisfy the specifications of output voltage regulation. Non-linear and linear models are developed; the latter exhibits fourth-order characteristic dynamics with complex right-half plane zeros. In the proposed control scheme, the current of the switch is used for feedback purposes. When the current loop is implemented, the fourth-order dynamics are changed to a dominant first order, which simplifies the controller design of outer loop. For this loop, a conventional controller is designed. At the end, experimental results are given for a 23 W quadratic boost converter, where open-loop and closed-loop responses are compared.
72 citations
TL;DR: In this article, a set-point controller for autonomous underwater vehicles (AUVs) is proposed, which takes into account the dynamics of the system and it can be applied for fully actuated AUVs.
72 citations
28 May 2006
TL;DR: A new intelligent hybrid controller that blends the classical PID and the fuzzy controllers in an intelligent way has been achieved and thus ‘better’ system responses in terms of transient and steady-state performances when compared to the pure classical PID or the pure fuzzy controller applications.
Abstract: In this study, a design methodology is introduced that blends the classical PID and the fuzzy controllers in an intelligent way and thus a new intelligent hybrid controller has been achieved. Basically, in this design methodology, the classical PID and fuzzy controller have been combined by a blending mechanism that depends on a certain function of actuating error. Moreover, an intelligent switching scheme is induced on the blending mechanism that makes a decision upon the priority of the two controller parts; namely, the classical PID and the fuzzy constituents. The simulations done on various processes using the new hybrid fuzzy PID controller provides ‘better’ system responses in terms of transient and steady-state performances when compared to the pure classical PID or the pure fuzzy controller applications. The controller parameters are all tuned by the aid of genetic search algorithm.
72 citations
TL;DR: In this paper, an adaptive power factor controller for three-phase inducti on generators and also for motors is proposed, which senses the reactive current drawn by the machine and accordingly provides the needed reactive power to improve the power factor to as close to unity as possible.
Abstract: An adaptive power factor controllerfor three-phase inducti on generators (and also for motors) is proposed in this paper. The controller senses the reactive current drawn by the machine and accordingly provides the needed reactive power to improve the power factor to as close to unity as possible. The controller is a modular, low-cost, harmonic free device. It does not create any transients in line current. It is designed to eliminate the self-excitation problems associated with induction generators. The controller is tested on an induction generator, which is being used in wind energy and similar applications.
71 citations
TL;DR: In this article, a two-stage structure for the control of voltage is investigated using a closed loop reactive current controller whose reference is set by an outer voltage controller, and the use of a PI controller and a fuzzy logic PI controller is investigated.
71 citations