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In the recent years, linear propulsion technology has been increasingly adopted in transportation, electromagnetic launch and aerospace applications. Compared with the conventional rotary-to-lin-early propulsion, the linear propulsion can offers many advantages, such as high efficiency, reduced maintenance cost, vibration and noise [1]-[4]. Among various kinds of linear motors for linear propulsion...
In recent years, flux switching permanent magnet machines (FSPMMs) have been comprehensively investigated for various applications [1]-[2]. In particular, the axial field FSPMMs are attracting much attentions due to the incorporation of the advantages of FSPMMs and axial filed permanent magnet (PM) machines, which offer the merits of high torque/power density, high efficiency, compact construction...
In recent years, it is a trend that electric vehicles (EVs) employ multiphase permanent magnet (PM) motors because of their advantages such as high efficiency, high power density, and high torque to current ratio. Many control strategies have been investigated for PM motor drives [1-3]. However, due to the multivariable and strong coupling nonlinear system, it is difficult to meet the high requirements...
This paper presents an evaluation of the end-to-end latency of a fault-tolerant CORBA infrastructure that we have implemented. The fault-tolerant infrastructure replicates the server applications using active, passive and semi-active replication, and maintains strong replica consistency of the server replicas. By analyses and by measurements of the running fault-tolerant infrastructure, we characterize...
In this paper we present the design and implementation of a Pluggable Fault-Tolerant CORBA Infrastructure that provides fault tolerance for CORBA applications by utilizing the pluggable protocols framework that most CORBA ORBs provide. Our approach does not require any modification to the CORBA ORB, and requires only minimal modification to the application. Moreover, it avoids the difficulty of retrieving...
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