نتایج جستجو برای: control 33063

تعداد نتایج: 1329048  

Journal: :journal of research in health sciences 0
mohammad reza monazzam-esmaeelpour zahra hashemi rostam golmohammadi narges zaredar

background: noise pollution is currently a major risk factor in industries in both developed and developing countries . the present study assessed noise pollution in the knitting industry in iran in 2009 and presented a control method to reduce the rate of noise generation. methods: the overall noise level was estimated using the network environmental noise assessment method in sina poud textil...

Journal: :iranian rehabilitation journal 0
nazila akbar fahimi epartment of occupational therapy, university of social welfare and rehabilitation sciences, tehran, iran. seyed ali hosseini epartment of occupational therapy, university of social welfare and rehabilitation sciences, tehran, iran. mehdi rassafiani epartment of occupational therapy, university of social welfare and rehabilitation sciences, tehran, iran. maryam farzad epartment of occupational therapy, university of social welfare and rehabilitation sciences, tehran, iran. hojjat allah haghgoo epartment of occupational therapy, university of social welfare and rehabilitation sciences, tehran, iran.

objectives: postural control deficit is one of the most important problems in children with spastic cerebral palsy (cp). the purpose of this paper is to review the reactive postural control in spastic children with cp. methods: researches on development of reactive postural control in typically developing (td) children and children with cerebral palsy (cp) were analyzed. results: the results of...

Adriano Mendonça Souza Bianca Reichert Claudimar Pereira da Veiga Jean Paulo Guarnieri Luciane Flores Jacobi

The purpose of this article is to evaluate the application of forecasting models along with the use of residual control charts to assess production processes whose samples have autocorrelation characteristics. The main objective is to determine the efficiency of control charts for individual observations (CCIO) and exponentially weighted moving average (EWMA) charts when they are applied to res...

Pitch control is one of t he  major aspects of wind turbine control, particularly over high wi nd s p e e d  a n d  oscillations. General El e c t r i c  (GE) model of  wi n d  t ur bi ne  i s practically compatible with the structure of the wind turbines. I t  h a s  b e e n  p r o v e d t h a t  simulation results using this model are closer to the actual case, compared to other available mod...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1388

چکیده ندارد.

A. R. Haghighi M. Pourmahmood Aghababa M. Roohi

  This paper concerns the problem of robust stabilization of uncertain fractional-order non-autonomous systems. In this regard, a single input active control approach is proposed for control and stabilization of three-dimensional uncertain fractional-order systems. The robust controller is designed on the basis of fractional Lyapunov stability theory. Furthermore, the effects of model uncertai...

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...

Journal: :iranian journal of science and technology transactions of electrical engineering 2015
a. yahi l. barazane

the use of micro-controllers in actuators provides extended flexibility for on-line data acquisition and sophisticated control implementation. however, attempts to utilize the excellent features of induction motor that is deemed by its strength, robustness, high torque, and relatively low cost in actuators face a fundamental control design challenge. the purpose of this paper is to introduce th...

This paper proposes a hybrid control scheme for the synchronization of two chaotic Duffing oscillator system, subject to uncertainties and external disturbances. The novelty of this scheme is that the Linear Quadratic Regulation (LQR) control, Sliding Mode (SM) control and Gaussian Radial basis Function Neural Network (GRBFNN) control are combined to chaos synchronization with respect to extern...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
ali qajar ramin bozorgmehry boozarjomehry,

this paper concerns a study on the optimal control for nonlinear systems. an appropriate alternative in order to alleviate the nonlinearity of a system is the exact linearization approach. in this fashion, the nonlinear system has been linearized using input-output feedback linearization (iofl). then, by utilizing the well developed optimal control theory of linear systems, the compensated nonl...

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