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Permanent magnet synchronous machines (PMSM) have dominated several key industries such as electric propulsion of electric and hybrid electric vehicles. This is primarily due to the introduction of temperature tolerant, high energy rare earth magnets over the past two decades. The proposed magnetic configuration presented in this paper introduces an opportunity for optimal generation of electromagnetic...
Frozen shoulder is a functional disorder related to shoulder muscles. Among many treatment strategies, rehabilitation exercise is one of the most common and viable therapy. In this research, a new 8 degrees of freedom (DOFs) rehabilitation robot arm named NTUH-II has been developed. The robot arm is able to provide most of upper limb rehabilitation motions in passive, active, and assistive modes....
This paper compared the effect of full-pitched and tooth windings on performance of double stator switched reluctance machines. The main scope of the research presented here is to obtain higher power/torque density for an existent double stator switched reluctance machine (DSSRM). The chosen approach is intended to reduce the amount of copper by applying a winding configuration that allows shorter...
Large scale electrification of transportation industry can be viewed as a paradigm shift in the way sources of energy are accessed, dispatched and consumed. Undoubtedly higher levels of fuel economy, reduced emission of greenhouse gases and other pollutants, and a lesser dependence on petroleum are among major incentives for many industrial and developing countries. The ultimate success of this transformation,...
The redundant driving problem is an inherent phenomenon existing in a modular caterpillar robot. To limit the internal forces arising from the redundant driving, this paper proposes a joint torque control method, which is based on an assumption that there is only one active joint in the four-link mechanism driving the climbing gait. Except the active joint, the other three joints are all considered...
This paper presents a technique of modeling and minimization of speed ripples of a vector-controlled faulty induction motor (IM) with broken rotor bars. First, the performance of the faulty IM is investigated in terms of speed ripples under the open-loop condition. Then, a new IM model is developed, incorporating the speed ripples. Consequently, a new neuro-fuzzy controller (NFC) is proposed to tolerate...
This paper presents the modeling and minimization technique for speed ripple of a vector controlled faulty induction motor (FIM) with broken rotor bars. First, the performance of the FIM is investigated in terms of speed ripple under the open-loop condition. Then, a new mechanical model of induction motor is developed incorporating the speed ripple. Based on this model a new NFC is proposed to tolerant...
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