نتایج جستجو برای: motor control
تعداد نتایج: 1452218 فیلتر نتایج به سال:
Background and Objective: In recent years, management of patients with chronic low back pain has been focused on transversus abdominis and multifidus muscles. The evidences have demonstrated dysfunction of these muscles in these patients. This study was aimed to compare the usefulness of motor-control exercises and conventional exercises on the lumbar local stabilizing muscles thickness, activi...
The purpose of this inquiry was to examine the interrelations among handwriting legibility and speed, and underlying perceptual-motor skills in Persian language students. Seventy students (26 male, 44 female; 10.21 ± 1.02 yr; 30 poor and 40 good control hand writers) were assessed during a copying task. The children completed the visual-motor control (VMC), upper-limb speed and dexterity (ULSD)...
This paper presents a theoretical derivation and computer simulation of an optimal speed controller for a brushless dc motor using feedback from a linear model running in parallel with the inverter-fed model. The intent of the feedback from the linear model is to eliminate torque ripples from the inverter drive. A nonlinear model of such a motor, transformed into a linear model by a local diphe...
We discuss some of the computational approaches that have been developed in the area of motor control. We focus on problems relating to motor planning, internal models, state estimation, motor learning and modularity. The aim of the chapter is to demonstrate, both at a conceptual level and through consideration of specific models, how computational approaches shed light on problems in the contr...
objectives: this study investigates the impact of neurofeedback on perceptual-motor skills of 5 to 12 years old children with attention deficit hyperactive disorder (adhd). methods: in this clinical study, 40 children between the ages of 5-12 years, who were patients of the tavanesh clinic and diagnosed with adhd, were randomly chosen and divided into two groups of control and test. 20-neurofee...
In this paper, a task-space controller for electrically driven robot manipulators is developed using a robust control algorithm. The controller is designed using voltage control strategy. Based on the nominal model of the robotic arm, the desired signals for motor currents are calculated and then the voltage control law is proposed based on the current errors and motor nominal electrical model....
In this paper, a task-space controller for electrically driven robot manipulators is developed using a robust control algorithm. The controller is designed using voltage control strategy. Based on the nominal model of the robotic arm, the desired signals for motor currents are calculated and then the voltage control law is proposed based on the current errors and motor nominal electrical model....
Impaired motor functions were reported in cholestatic animals. This disorder in the function and death of motor neurons is highly dependent on changes in the environment around astrocytes and the blood-brain barrier, which is moderated by the aquaporin 4 protein. For this reason, the effects of cholestasis on motor cortex histology and morphology and aquaporin 4 protein levels were investigated...
A switched Reluctance motor (SRM) has several desirable features, including simple construction, high reliability and low cost. However, it suffers from large torque ripple, highly non-uniform torque output and magnetization characteristics and large noise. Several studies have succeeded in torque ripple reduction for SRM using Direct Torque Control (DTC) technique. DTC method has many adva...
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