نتایج جستجو برای: adaptive pi control

تعداد نتایج: 1526515  

2007
Ahmed Tahour Hamza Abid Abdel Ghani Aissaoui A. Tahour H. Abid A. G. Aissaoui

This paper presents an application of adaptive neuro-fuzzy (ANFIS) control for switched reluctance motor (SRM) speed. The ANFIS has the advantages of expert knowledge of the fuzzy inference system and the learning capability of neural networks. An adaptive neuro-fuzzy controller of the motor speed is then designed and simulated. Digital simulation results show that the designed ANFIS speed cont...

2011
Bahman Bahmani Bahman Bahmani Firouzi Hosein Khorsand

This paper introduces a fuzzy PI controller as a power system stabilizer. The fuzzy PI controller has been designed to prepare an auxiliary signal to the excitation system of the synchronous generator. The proposed controller utilizes a combination of a fuzzy logic controller (FLC) and a PI controller. In comparison with the conventional fuzzy controllers, the proposed fuzzy PI controller incor...

2012
Inés Tejado S. Hassan HosseinNia Blas M. Vinagre

This paper addresses the use of fractional order control (FOC) in the context of control through networks to minimize or compensate the effect of the time-varying networkinduced delay. In particular, two fractional order strategies are presented based on the adaptation of, on one hand, the gains of a fractional order PI controller, and, on the other hand, both its gains and its order in accorda...

Journal: :Applied optics 2014
Qiang Fu Jörg-Uwe Pott Diethard Peter Feng Shen Changhui Rao Xinyang Li

To achieve high-resolution imaging the standard control algorithm used for classical adaptive optics (AO) is the simple but efficient proportional-integral (PI) controller. The goal is to minimize the rms error of the residual wave front. However, using the PI controller, it is not possible to do this. One possible way to minimize the rms error is to use linear quadratic Gaussian (LQG) control....

Journal: :Journal of modern power systems and clean energy 2021

This paper proposes a sliding mode controller based on robust model reference adaptive proportional-integral (RMRA-PI) control for stand-alone voltage source inverter (SA-VSI). The proposed has two loops where the coefficients of PI are regulated by law. method is used to regulate output under different load conditions and uncertainty, adapts reduce total harmonic distortion (THD). In this pape...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Kevin L Otipoby Ari Waisman Emmanuel Derudder Lakshmi Srinivasan Andrew Franklin Klaus Rajewsky

B cells respond to antigens by engagement of their B-cell antigen receptor (BCR) and of coreceptors through which signals from helper T cells or pathogen-associated molecular patterns are delivered. We show that the proliferative response of B cells to the latter stimuli is controlled by BCR-dependent activation of phosphoinositidyl 3-kinase (PI-3K) signaling. Glycogen synthase kinase 3β and Fo...

2006
R. SHAHNAZI

An asymptotically stable direct adaptive fuzzy PI sliding mode controller is proposed for a class of nonlinear uncertain systems. In contrast to other existing approaches of handling disturbances, the proposed approach does not require this bound to be known, only requiring that it exists. Moreover, a PI control structure is used to attenuate chattering. The approach is applied to stabilize an ...

In this paper, a novel method based on a combination of Extended Kalman Filter (EKF) with Self-adaptive Differential Evolution (SaDE) algorithm to estimate rotor position, speed and machine states for a Permanent Magnet Synchronous Motor (PMSM) is proposed. In the proposed method, as a first step SaDE algorithm is used to tune the noise covariance matrices of state noise and measurement noise i...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0

safflower is one of the oldest cultivated plants and oilseed as a native iran could have in the development of oilseeds cultivation. to evaluate the morphological characteristics of safflower (carthamus tinctorius l) an experiment was conducted as a completely randomized design. the figures include 1- pi 23755 2-pi 239041 3- pi 250202 4- pi 250532 5- pi 25268 6- pi 253515 7- pi 253541 8- pi 253...

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