نتایج جستجو برای: system design

تعداد نتایج: 2937201  

Journal: :مهندسی قدرت ایران 0
mahmood ebadian university of birjand, iran hamidreza najafi university of birjand, iran reza ghanizadeh university of birjand, iran

in this paper, a novel method is developed for designing the output feedback controller for static synchronous series compensator (sssc). in the proposed method, the problem of selecting the output feedback gains for the sssc controllers is changed into an optimization problem with a time domain-based objective function.then, it is solved by using the particle swarm optimization (pso) algorithm...

Journal: :journal of modern processes in manufacturing and production 2014
morteza sadegh amalnik

computer-integrated manufacturing (cim), technologies are presented as solutions tomanufacturing organizations, which need to perform well in all customer-related dimensionssimultaneously. in the literature, cim technologies providing such benefits as more frequentproduction changes, reduced inventory level, improved ability of producing complex parts with ahigh degree of accuracy and repeatabi...

Journal: :archives of razi institute 2016
s. moradi bidhendi h. zolfagharian n. mohamadpour dounighi f. saraei p. khaki

in recent years, encapsulation of drugs and antigens in hydrogels, specifically in calcium alginate particles, is an interesting and practical technique that was developed widespread. it is well known that alginate solution, under proper conditions, can form suitable nanoparticles as a promising carrier system, for vaccine delivery. the aim of this study was to synthesis alginate nanoparticles ...

Journal: :international journal of industrial engineering and productional research- 0
nasim nahavandi assistant professor of industrial engineering, tarbiat modares university, tehran, iran hamid eslami nosratabadi young researchers club, science and research branch, islamic azad university, tehran, iran mohammad abbasian phd student of industrial engineering, tarbiat modares university, tehran, iran sanaz pourdarab department of information technology management, science and research branch, islamic azad university, tehran, iran

the science parks have important role in development of technology and are able to make economic growth of the countries. the purpose of this paper is the presentation of a fuzzy expert system (fis) as intelligent systems to evaluate the science and technology parks. one of the problems for evaluating science and technology parks is to have the high number of criteria and science parks which ah...

Journal: :journal of operation and automation in power engineering 2007
k. mazlumi m. darabian m. azari

this paper presents a novel indirect adaptive power system stabilizer (pss) via a developed synergetic control methodology and fuzzy systems. fuzzy system is utilized in an adaptive scheme to estimate the system using a nonlinear model. the synergetic control guarantees robustness of the controller and makes the controller easy to implement because of using a chatter free continuous control law...

Journal: :روش های عددی در مهندسی (استقلال) 0
حسن قوجه بکلو و ساسان سلامتیان h. ghoudjehbaklou and s. salamatian

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Journal: :مهندسی صنایع 0
yaghoob gholipour department of civil engineering parviz mohammad zadeh faculty of new science and technology mohadeseh sadat shirazi faculty of new science and technology

this paper presents an efficient global meta-model building technique for solving high fidelity multidisciplinary design optimization (mdo) problems. the main difficulties associated with mdo are often characterized by interdisciplinary couplings, high computational cost of an analysis in individual disciplines and a large number of design variables and constraints. these issues result in very ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شیراز 1390

سیستم های فراپهن باند با قابلیت انتقال داده با سرعت بالاتر و مصرف توان کمتر، توجه زیادی را به خود جلب نموده اند. تقویت کننده کم نویز یک بلوک حساس در گیرنده های فراپهن باند می باشد که باید مشخصات دقیق زیادی را نظیر امپدانس ورودی پهن باند، بهره کافی، عدد نویز پایین، مصرف توان کم و مساحت تراشه کوچک فراهم آورد. برای تقویت کننده کم نویز مسئله تأمین بهره کافی و ایجاد نویز کم اهمیت ویژه ای می یابد، چو...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1382

برای رسیدن به سطوح بالای پوشش خطا، معمولا تغییرات زیادی در مقادیر سیگنالهای داخلی مدار ایجاد می گردد که باعث افزایش مصرف توان نسبت به حالت کار عادی مدار است. علاوه بر این آزمون مبتنی بر پویش در زمان شیفت دادن بردارها تعداد زیادی گذار در ورودی مدار تحت آزمون ایجاد می نماید که این مسئله باعث فعالیتهای کلیدزنی زیاد در مدارهای داخلی واحد تحت آزمون و افزایش توان خواهد شد. توان مصرفی بالا در زمان آزم...

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