Analytic model for a nonlaminated cylindrical magnetic actuator including eddy currents
- 18 April 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 41 (4), 1248-1258
- https://doi.org/10.1109/tmag.2005.844847
Abstract
The eddy currents induced within a nonlaminated cylindrical magnetic actuator by a changing field have a fundamental influence on the actuator's performance. Understanding of these dynamics is essential in designing high-performance actuators and developing control algorithms for them. This paper presents an analytical approach to modeling the relationship between applied magnetomotive force and mechanical force. The approach is based on dividing the actuator into elements according to the flux distribution inside the actuator and finding the frequency-dependent reluctance of the flux paths of each element. An analytic model and its half-order simplification are derived, both of which are explicitly dependent on actuator material and geometric properties. Performance predictions from both analytic models are compared with finite-element analysis, demonstrating the accuracy of the models.Keywords
This publication has 9 references indexed in Scilit:
- Rotor compliance minimization via μ-control of active magnetic bearingsIEEE Transactions on Control Systems Technology, 2002
- Conveyance Control for an Electromagnetic Levitation Rectangular Sheet Steel. Proposition of Noncontact Control Mechanism for the Horizontal Inertial Force of the Steel Plate which Suppressed the Elastic Vibration.TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2002
- Coprime factorizations and stability of fractional differential systemsSystems & Control Letters, 2000
- Fractional-order systems and PI/sup /spl lambda//D/sup /spl mu//-controllersIEEE Transactions on Automatic Control, 1999
- Sliding-mode control of a nonlinear-input system: application to a magnetically levitated fast-tool servoIEEE Transactions on Industrial Electronics, 1998
- A novel combined lift and propulsion system for a steel plate conveyance by electromagnetsIEEE Transactions on Magnetics, 1998
- A simple dynamic model for eddy currents in a magnetic actuatorIEEE Transactions on Magnetics, 1996
- An attempt at development of a magnetic levitation transport system in vacuum using the mechanism of induced repulsive forceVacuum, 1993
- The influence of eddy currents on magnetic actuator performanceProceedings of the IEEE, 1987