نتایج جستجو برای: loop system

تعداد نتایج: 2323169  

Journal: :iranian journal of numerical analysis and optimization 0
elahe safaie mohammadhadi farahi

in this paper we present a new method for solving fractional optimal control problems with delays in state and control. this method is based upon bernstein polynomial basis and using feedback control. the main advantage of using feedback or closed-loop controls is that they can monitor their effect on the system and modify the output accordingly. in this work, we use bernstein polynomials to tr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی ساری - دانشکده مرتع و آبخیزداری و شیلات و محیط زیست 1390

هدف از این پژوهش ارزیابی تنوع ژنتیکی نژادهای مختلف ماهی قزل آلای رنگین کمان (ایرانی، فرانسوی و دانمارکی) با استفاده از جایگاه های d-loop و سیتوکرم b dna میتوکندریایی بوده است. dna به روش فنل-کلروفرم از بافت باله ی دمی 135 قطعه ماهی استخراج و واکنش زنجیره ای پلی مراز (pcr) جهت تکثیر یک قطعه 986 جفت بازی از ناحیه ی d-loop و یک قطعه 974 جفت بازی از ژن سیتوکرم b دی. ان. ای میتوکندریایی و با استفاده...

Journal: :international journal of robotics 0
s. firouzy iran university of science and technology m. h. korayem iran university of science and technology

this paper focuses on the effects of closed- control on the calculation of the dynamic load carrying capacity (dlcc) for mobile-base flexible-link manipulators. in previously proposed methods in the literature of dlcc calculation in flexible robots, an open-loop control scheme is assumed, whereas in reality, robot control is achieved via closed loop approaches which could render the calculated ...

2000
Wen Li Jason Meiners

Phase-lock loops (PLLs) have been one of the basic building blocks in modern electronic systems. They have been widely used in communications, multimedia and many other applications. The theory and mathematical models used to describe PLLs come in two types: linear and non-linear. Non-linear theory is often complicated and difficult to deal with in real-world designs. Analog PLLs have been well...

Journal: :medical journal of islamic republic of iran 0
m.r. kalantar motamedi shohada-e-tajrish medical center, shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) m. rezaei qazvin university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی قزوین (qazvin university of medical sciences) p. kharazm shohada-e-tajrish medical center, shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)سازمان های دیگر: shohada-e-tajrish medical center m. sharifi shohada-e-tajrish medical center, shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)سازمان های دیگر: shohada-e-tajrish medical center a. kavyani shohada-e-tajrish medical center, shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)سازمان های دیگر: shohada-e-tajrish medical center m. zeynal zade shohada-e-tajrish medical center, shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)سازمان های دیگر: shohada-e-tajrish medical center

abstract background: the loop colostomy is one of the most popular techniques used as a protective maneuver for a distal anastomosis and/or temporary fecal diversion. we are introducing the use of a full thickness skin bridge under the large bowel instead of a glass rod which alleviates problems such as protrusion of the large bowel, retraction of the bowel into the abdomen after removing the r...

2006
Xiaoping Zhang Yinhai Wang

The Washington State Department of Transportation (WSDOT) has a loop detection system on its Greater Seattle freeway network to provide real-time traffic data. The dual-loop detectors installed in the system are used to measure vehicle lengths and then classify each vehicle into one of four categories according to its length. The dual-loop’s capability of measuring vehicle length makes the WSDO...

2001
Dragan Jovcic

This research addresses the special requirements of phase locked loops (PLLs) for a typical application with FACTS elements. A new PLL system that uses adaptation algorithms is developed with the aim of improving speed of responses, robustness to AC voltage depressions, and harmonic rejection. The adaptive PLL consists of the three control units that individually control frequency, phase angle,...

2005
Faming Li Robert E. Skelton

This paper provides a framework for control design and simulation of a closed-loop system with partial input/output data of a plant. Given the input/output crosscorrelation and output autocorrelation data of an open loop dynamic system, a simulation model implemented in fixed-point digital devices which matches these data is obtained using q-Markov Covariance Equivalent Realizations. These resu...

1996
Peter Van Overschee Bart De Moor

In this paper we present a general framework for closed-loop subspace system identi cation. This framework consists of two new projection theorems which allow the extraction of nonsteady state Kalman lter states and of system related matrices directly from closed-loop input output data. Three algorithms for the identi cation of the state space matrices are then presented. The similarities betwe...

2010
Hongjin Liang Yu Zhang Yiyun Chen Zhaopeng Li

Pointer programs remain a major challenge for program analysis and verification. Shape analysis can discover the shape invariants of data structures in the heap and detect errors about manipulating pointers in a program. This paper presents a shape analysis for linked list programs based on a new shape graph representation. Our shape graphs could describe unbounded data structures without loss ...

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