By Topic

Dynamic modelling and control of a normal-force actuator

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hughes, A. ; Sch. of Electron. & Electr. Eng., Leeds Univ., UK ; Stephenson, J.M. ; Sloan, C.

The authors describe the dynamic modelling and control of a simple form of electromagnetic actuator comprising a laminated core with a coil and a `mover' section of the magnetic circuit separated by a small airgap. The modelling of the ideal case, in which a constant voltage is applied to the coil, is considered first. The important idea of control using freewheeling is then introduced. The model is developed to incorporate saturation, eddy currents and realistic circuit components and measured performance is compared with model results. The comparison demonstrates that this relatively simple model is capable of describing the behaviour of an actual device with good accuracy. The behaviour of the actuator when lifting a range of masses is then presented and it is shown to have a high force density and be capable of lifting loads up to 500 N. Finally, several control strategies are discussed which link the load to the length of freewheeling time with the aim of achieving an optimum balance between speed of action and efficient operation. One technique is recommended for further work

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:145 ,  Issue: 5 )