amir abdollah - Associate Professor,Mechanical EngineeringDepartment,AmirkabirUniversityof Technology,Tehran, Iran
mohsen bahrami - Associate Professor,Mechanical EngineeringDepartment,AmirkabirUniversityof Technology,Tehran, Iran
yousef hojjat - Assistant Professor,School of Engineering,Tarbiat Modancs University,Tehran. Iran.
mojtaba ghodsi - M. Sc. gradtwe, [)qlartmeot of Mechanical Engineering,AmirkabirUnivcnity ofTechnolOBYT. ehran, Iran.

This paper presents an analytical model for both inductanceand force in a cylindrical variable- reluctance linear stepper motor (VR-LSTM)and compares analytical and numerical values, resulted from Maxwell stresses tensor and Virtual work principal calculations,with the valuesobtainedfrom experiments.It has been foundthat there is a good agreement between analytical and numerical curves. where as there are some deviationsaroundthe maximumforcein experimentalresults.

Linear stepper motor-Finite Element Method-Variable reluctance­ Virtual work-Static force