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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Papers
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TL;DR: In this article, an analysis of the operation of a stand-alone self-excited induction generator (SEIG) with a generalized impedance controller (GIC) has been discussed.
Abstract: In this paper, analysis of the operation of a stand-alone self-excited induction generator (SEIG) with generalized impedance controller (GIC) (voltage source pulsewidth-modulated bidirectional inverter with dc link battery) has been discussed. Model of the SEIG along with the generalized impedance controller, has been developed in MATLAB/Simulink environment. The simulation results obtained for steady-state operation of the system, following speed and load perturbations have been presented here. The simulation results are validated with the experimental ones, which are conducted on a laboratory prototype of the SEIG-GIC system. The generalized impedance controller is found to be capable of maintaining the frequency of the SEIG constant under open-loop condition, following the speed and load perturbations.
57 citations
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TL;DR: In this paper, an adaptive neural-net controller system for an underwater vehicle is described and investigated by heading-keeping and path-following experiments in conditions where unpredictable disturbances are applied to the robot.
57 citations
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TL;DR: In this article, a self-tuning PI controller for the speed control of electrical motor drives is proposed, where the PI gains are adjustable parameters and will be updated online depending on the speed error.
57 citations
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08 May 2011TL;DR: Particle Swarm Optimization Algorithm is used to design the optimum PID controller parameters for a high order automatic voltage regulator (AVR) with new defined time-domain cost function.
Abstract: A proportional-integral-derivative (PID) controller is a generic feedback controller widely used in industrial control systems, process control, motor drive, and instrumentation. Despite the popularity, the tuning aspect of PID coefficients is a challenge for researchers and plant operators. In this paper Particle Swarm Optimization Algorithm is used to design the optimum PID controller parameters for a high order automatic voltage regulator (AVR). The proposed approach with new defined time-domain cost function, has a very easy implementation, stable convergence characteristic and ability of fast tuning of optimum PID controller parameters that requires fewer number of iterations. In order to evaluate the performance of the PSO-PID controller, the results are compared with the genetic algorithm (GA). The comparison shows the PSO-PID algorithm has more efficiency and robustness in improving the step response of an AVR system.
57 citations
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10 Jan 2000
TL;DR: In this article, a multi-function controller in a computer graphics system performs the functions of a graphics processor, video processor, a system memory controller, a cache controller, and a PCI bridge.
Abstract: A multi-function controller in a computer graphics system performs the functions of a graphics processor, a video processor, a system memory controller, a cache controller, and a PCI bridge. The multi-function controller is connected to the host bus of the computer graphics display system to maximize performance. A graphics frame buffer and a system memory are combined into a unified system memory, which is controlled by and coupled to the multi-function controller.
57 citations