نتایج جستجو برای: motor control

تعداد نتایج: 1452218  

Journal: :journal of electric power and energy conversion systems 0

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...

Journal: :iranian journal of child neurology 0
rajendran venkadesan research scholar (rehabilitation),institute of rehabilitation science,holy cross college affiliated to bharathidasan university, trichy,tamilnadu, india glory roy finita assistant professor, institute of rehabilitation science, holy cross college affiliated to bharathidasan university, trichy, tamilnadu, india

objective sensorineural hearing loss is believed to be the result of a physiologic malfunction in the inner ear or acoustic nerve. depending on the rapidity of progression and severity, sensorineural hearing loss can be endlessly annoying, frightening and can constitute a permanent after effect. moreover, there is no surgical procedure that can reverse or lessen the severity of a sensorineural ...

Journal: :the modares journal of electrical engineering 2008
mohamad ebrahimi esmail rezayi

sensorless speed torque control of induction machines has been widely used in many industrial applications. the simple method of direct vector control can provide tacholess control as well as more complex approaches. in this method, the motor flux can be obtained by measuring voltage and current and integrating motor back electromotive force. the only required motor parameter is stator resistan...

Journal: :advances in railway engineering,an international journal 2015
seyed saeed fazel mojtaba khorshidi mehdi niakinezhad

although, single-sided linear induction motor (slim) utilization has increased in railway applications due to their numerous advantages in comparison to rotational induction motors (rim), there are some sophistication in their mathematical models and electrical drive. this paper focuses on the problems of slim modeling, with assuming end-effect on the basis of field oriented control (foc) as a ...

Journal: :iranian journal of science and technology (sciences) 2008
sh. kaboli

in direct torque control, the selection of an applied voltage vector is based on the measuredparameters at the beginning of the sampling period. the delay between the measurement and the application of the voltage vector is the origin of an extra torque ripple. in this paper, a new predictive controller is proposed for compensating this delay and reducing the torque ripple. the stator current i...

Journal: :iranian journal of electrical and electronic engineering 0
لسانی lesani دارابی darabi نصیری قیدری nasiri gheidari توتونچیان tootoonchian

in this paper, a new field oriented control scheme with maximum torque for permanent magnet hysteresis synchronous (pmhs) motor has been presented. vector control method provides significant improvement to the dynamic performance of ac motors but in this method d- axis current is controlled such as the ratio of motor torque to motor current is a maximum, then the dynamic performance will be ver...

Journal: :iranian journal of fuzzy systems 2012
s. r. mousavi-aghdam m. b. b. sharifian m. r. banaei

this paper presents a new control structure to reduce torque ripple in switched reluctance motor. although srm possesses many advantages in motor structure, it suers from large torque ripple that causes some problems such as vibration and acoustic noise. in this paper another control loop is added and torque ripple is de ned as an objective function. by using fuzzy sliding mode strategy, the dc...

Journal: :basic and clinical neuroscience 0
amir roshani abbas erfanian

in this paper, a control strategy is proposed for control of ankle movement on animals using intraspinal microstimulation (isms). the proposed method is based on fuzzy logic control. fuzzy logic control is a methodology of intelligent control that mimics human decision-making process. this type of control method can be very useful for the complex uncertain systems that their mathematical model ...

Background and Objectives: Idiopathic scoliosis is one of the most common abnormalities in adolescents which can result in impaired postural and motor control. Therefore, the present study compared the postural and motor control in adolescents with idiopathic scoliosis and healthy subjects. Materials and Methods: In this descriptive study, out of 79 patients referred to Tehran Rehabilitation ...

ژورنال: بیهوشی و درد 2019

 Aims and background: Patients with non-specific low back pain experience disorder in back motor control and trunk muscle endurance and these disorders are associated with pain in these patients. The objective of this study was to compare the effectiveness of motor control exercises, exercise in water, and combined exercises on back motor control and trunk muscle resistance in patients with chr...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید