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 paper, a sliding mode controller for the single-phase grid-connected photovoltaic system has been proposed, which consists of maximum power point tracker (MPPT) controller and sliding mode current controller only.
136 citations
TL;DR: A multiregion fuzzy logic controller is proposed for nonlinear process control using an auxiliary process variable to detect the process operating regions and can give satisfactory performance in all regions.
Abstract: Although a fuzzy logic controller is generally nonlinear, a PI-type fuzzy controller that uses only control error and change in control error is not able to detect the process nonlinearity and make a control move accordingly. In this paper, a multiregion fuzzy logic controller is proposed for nonlinear process control. Based on prior knowledge, the process to be controlled is divided into fuzzy regions such as high-gain, low-gain, large-time-constant, and small-time-constant. Then a fuzzy controller is designed based on the regional information. Using an auxiliary process variable to detect the process operating regions, the resulting multiregion fuzzy logic controller can give satisfactory performance in all regions. Rule combination and controller tuning are discussed. Application of the controller to pH control is demonstrated. >
136 citations
TL;DR: It is seen from the comparative analysis that hSFS-PS tuned PI-PD controller in single and multi-area with multi sources improves the system frequency stability in complicated situations.
136 citations
TL;DR: A gravitational search algorithm combined with the Cauchy and Gaussian mutation, named as CGGSA, is proposed and used to optimize the FOPID controller parameters and results indicate that the C GGSA has shown excellent optimization ability compared with some popular meta-heuristics on benchmark functions.
135 citations
Patent•
02 Dec 1997
TL;DR: In this article, a field mountable controller boots by transmitting a seed letterbug to a server, which responds with an initial operating system and program, and the controller then boot using the operating system.
Abstract: A field mountable controller boots by transmitting a seed letterbug to a server. The server responds with an initial operating system and program. The program reads configuration information about the controller and transmits it back to the server which responds with a particular letterbug for the controller. The controller then transmits the letterbug to a boot image server which returns a corresponding operating system image to the controller. The controller then boots using the operating system.
135 citations