# Home > Actuators > Linear actuators

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**Topic under **Linear actuators

**Source:** www.journal.tfc.kg.ac.yu

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Wed Nov 29, 2017 02:47:18 PM

__Short Desciption__:

For adequate simulation of the dynamic behaviour of linear actuators, coupled ... The present paper deals with a linear actuator with axially magnetised

__Summary__:

The dynamic characteristics of an axisymmetrical linear actuator with
axially magnetized moving permanent magnet are obtained using combined field
and circuit approach. The magnetic field of the actuator has been analysed using
the finite element method over a current-displacement sampling grid. Two field
analyses are carried out for each point of the grid - one for the real system and
one for the system where the permanent magnet is considered as a soft magnetic
body. For each point of the grid, data for the total flux linkage, electromagnetic
force and the coil inductance are extracted from the magnetic field analysis.
These data are approximated by bicubic spline functions, which are employed in
the solution of the system of ordinary differential equations of the electrical circuit
and the mechanical motion. Results are obtained for the time variations of the
coil current, mover displacement, mover velocity and electromagnetic force. The
results for the current and displacement are verified experimentally.

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Leave comment :
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"Dynamic Characteristics of a Bistable Linear Actuator with Moving "

*Actuator *

Tue May 31, 2011 07:49:51 PM

The text is useful as, the results are obtained for the time variations of the coil current, mover displacement, mover velocity and electromagnetic force. It is great to know that the results for the current and displacement are verified experimentally. Thanks a lot for sharing. For more details visit http://progressiveautomations.com/

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