نتایج جستجو برای: adaptive

تعداد نتایج: 198990  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1380

در این پایان نامه یک روش اتوماتیک برای اندازه گیری سطح صورت انسان و بازسازی آن توسط روش فتوگرامتری رقومی اجرا و ارزیابی گردیده است . عکسبرداری، براساس طراحی شبکه فتوگرامتری برد کوتاه، توسط یک دوربین آماتور از حداقل هفت ایستگاه همگرا صورت گرفت . محاسبات کالیبراسیون و توجیه خارجی توسط یک شبکه نقاط کنترل سه بعدی که برای این منظور طراحی، ایجاد و اندازه گیری گردید، صورت گرفت . برای اینکه محاسبات تنا...

Journal: :the modares journal of electrical engineering 2015
syed hamid hashemipour nastrn vasegh ali khaki sedigh

in this paper, the problem of decentralized model reference adaptive control (mrac) for a class of large scale systems with time varying delay in interconnected term and input and state delays is studied. to compensate the effect of input delay indirectly, a smith predictor built on. to handle the effects of the time delays in input, the adaptive controller part includes two auxiliary dynamic f...

H. Rabbani-Zadeh, S.R. Sabbagh-Yazdi, T. Amiri,

In this research, an efficient Galerkin Finite Volume Method (GFVM) along with the h–refinement adaptive process and post–processing error estimation analysis is presented for fracture analysis. The adaptive strategy is used to produce more accurate solution with the least computational cost. To investigate the accuracy and efficiency of the developed model, the GFVM is compared with two versio...

Two-dimensional (TD) adaptive filtering is a technique that can be applied to many image, and signal processing applications. This paper extends the one-dimensional adaptive filter algorithms to TD structures and the novel TD adaptive filters are established. Based on this extension, the TD variable step-size normalized least mean squares (TD-VSS-NLMS), the TD-VSS affine projection algorithms (...

Journal: :journal of artificial intelligence in electrical engineering 2014
mohammad esmaeil akbari noradin ghadimi

in this paper an adaptive pid controller for wind energy conversion systems (wecs) has been developed. theadaptation technique applied to this controller is based on reinforcement learning (rl) theory. nonlinearcharacteristics of wind variations as plant input, wind turbine structure and generator operational behaviordemand for high quality adaptive controller to ensure both robust stability an...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده فنی 1392

موتور dc امروزه هم در جهان بدلیل قابلیت کنترل آسان سرعت هنوز مورد استفاده قرار می گیرد. در این پایان نامه طراحی و شبیه سازی یک کنترل کننده ی سیستم عصبی فازی سازگار(adaptive neuro fuzzy inference system) تحقیق می شود که این کنترل کننده در روش کنترل سرعت مدولاسیون پهنای باند(pulse width modulation)، بر روی یک موتور dc تحریک مستقل به کار گرفته شده است. هدف اصلی از انجام این کار، کاهش جریان راه ان...

Journal: :international journal of health policy and management 2015
gemma carey brad crammond eleanor malbon nic carey

inequalities in the social determinants of health (sdh), which drive avoidable health disparities between different individuals or groups, is a major concern for a number of international organisations, including the world health organization (who). despite this, the pathways to changing inequalities in the sdh remain elusive. the methodologies and concepts within system science are now viewed ...

Ghazanfar Shahgholian, Javad Faiz Mojtaba Maghsoodi

This paper presents fuzzy and conventional performance of model reference adaptive control(MRAC) to control a DC drive. The aims of this work are achieving better match of motor speed with reference speed, decrease of noises under load changes and disturbances, and increase of system stability. The operation of nonadaptive control and the model reference of fuzzy and conventional adaptive contr...

M. Ameri and S.M. Fagheih, M.S. Hosseini,

Among the adaptive-grid methods, redistribution and embedding techniques have been the focus of more attention by researchers. Simultaneous or combined adaptive techniques have also been used. This paper describes a combination of adaptive-grid embedding and redistribution methods on semi-structured grids for two-dimensional invisid flows. Since the grid is semi-structured, it is possible to us...

Journal: :the modares journal of electrical engineering 2004
ramezan havangi mohammad teshnehlab habib ghanbarpour asl

the error of inertial navigation systems increase versus time, therefore for achieving higher accuracy specially in long time navigations we have to use an aiding system. global positioning system is the best aiding system in this case. in this paper we first simulate a gps and ins; then simulate tightly integration and finally review adaptation method of kalman filtering a fuzzy adaptive kalma...

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