Use of Inverse models built for accurate microstepping of linear switched reluctance step actuators

A microstep control strategy, developed for linear switched reluctance step actuators, is proposed in this paper. The design of the studied actuator using finite element simulations has allowed to put, especially, in evidence the important dissymmetries observed on electromagnetic force characterist...

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Bibliographic Details
Main Authors: El Amraoui Ouni, L., Gillon, F., Brochet, P., Benrejeb, M.
Format: Conference Proceeding
Language:English
Subjects:
Current supplies
edge effects
Electromagnetic forces
Finite element methods
Finite Elements
force response surface inversion
Hydraulic actuators
Inverse problems
linear actuator
Magnetic separation
microstepping
Response surface methodology
Stators
Systems engineering and theory
Teeth
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Summary:A microstep control strategy, developed for linear switched reluctance step actuators, is proposed in this paper. The design of the studied actuator using finite element simulations has allowed to put, especially, in evidence the important dissymmetries observed on electromagnetic force characteristics developed by the different actuator phases. From this observation, an adapted control strategy, exploiting the obtained finite element results is used for punctual evaluation of the electromagnetic force. Hence, response surfaces of electromagnetic force according to plunger positions and phase supply currents are built and inversed in order to determine the supply current configurations required for accurate microstepping. Practical tests have validated the elaborated control strategy
DOI:10.1109/CESA.2006.4281690