نتایج جستجو برای: nonlinear control system

تعداد نتایج: 3348915  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
shabnam rasoulian mohammad shahrokhi hassan salarieh

in this paper, a reaction system consisting of two parallel, non-isothermal autocatalytic reactions in a continuous stirred tank reactor (cstr) has been considered. reactor chaotic behavior is possible for certain values of system parameters. two types of controllers are designed and compared in order to control both the reactor temperature and the product concentration. the first controller is...

Journal: :journal of advances in computer research 2014
nahid ebrahimi meymand aliakbar gharaveisi

anti-lock braking system (abs) which is a nonlinear and time variant system may not be easily controlled by classic control methods. this is due to the fact that classic linear controllers are just capable of controlling a specific plant in small region of state space. to overcome this problem, a more powerful control technique must be employed for complex nonlinear plants. fuzzy controllers ar...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - پژوهشکده برق و کامپیوتر 1385

موتور سنکرون خطی مغناطیس دایم دارای مزایای متعددی از جمله بازدهی بالا، حذف جعبه دنده بین موتور و قسمت متحرک، کاهش تلفات مکانیکی، دقت بالا، نویز کم و غیره است. با توجه به این مزیتها ، موتور سنکرون خطی مغناطیس دایم کاربردهای فراوانی در فرآیندهای صنعتی و سیستم های حمل و نقل و ساختمان یافته است. با وجود این که اصول کنترل درایو موتور سنکرون مغناطیس دایم خطی شبیه نوع دوار آن است، ولی خصوصیات کنترلی آ...

M. J. Koopaee V. J. Majd

This paper extends the idea of switching T-S fuzzy systems with linear consequent parts to nonlinear ones. Each nonlinear subsystem is exactly represented by a T-S fuzzy system with Lure’ type consequent parts, which allows to model and control wider classes of switching systems and also reduce the computation burden of control synthesis. With the use of a switching fuzzy Lyapunov function, the...

Journal: :Transactions of the Society of Instrument and Control Engineers 1995

Electro-hydraulic systems with regards to the their specific features and applications among other industrial systems including mechanical, electrical and pneumatic systems, have been widely taken into consideration by the scientists and researchers. Due to the fact that the electro-hydraulic system is inherently a nonlinear system, has some problems such as signals saturation, nonlinear effici...

Control actuators' faults are among the major reasons to lose aircraft control while flights. The plane dynamics is severely dependent upon faults and errors in flight control systems and if the reformed control order is not issued by the fault tolerant controller there would be unpleasant outcomes such as inconsistency and the reduction of system performance and some dreadful aerial accide...

In this paper, a robust local controller has been designed to balance the power for distributed energy resources (DERs) in an islanded microgrid. Three different DER types are considered in this study; photovoltaic systems, battery energy storage systems, and synchronous generators. Since DER dynamics are nonlinear and uncertain, which may destabilize the power system or decrease the performanc...

ژورنال: کنترل 2020

Purpose of this paper is designing of a positional angle control system for a DC servomechanism. The servomechanism system consists of a direct current (DC) motor, a motor driver, a measuring sensor, and a control board to adjust angular position. The motor in the servomechanism has a non-linear element called dead-zone. Presence of dead-zone causes the nonlinear behavior of system. Injecting a...

Alizadeh, B., Mirzaei, M., Rafatnia, S., Z. Ahangari Sisi, Z. ,

Active vehicle suspension system is designed to increase the ride comfort and road holding of vehicles. Due to limitations in the external force produced by actuator, the design problem encounters the constraint on the control input. In this paper, a novel nonlinear controller with the input constraint is designed for the active suspension system. In the proposed method, at first, a constrained...

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