Magnetomotive device based on reluctance force
The Reluctance Force Actuator block models a generic magnetomotive device based on reluctance force.
The block is based on the following equations:
|Φ||Flux in the magnetic circuit|
|x||Thickness or length of the air gap|
|μr||Relative permeability of the material|
|A||Cross-sectional area of the section being modeled|
Connections N and S are magnetic conserving ports, and connections C and R are mechanical translational conserving ports. The magnetic force produced by the actuator acts to close the gap, therefore the resulting force is negative when it acts from C to R.
The current excitation in the system is constant.
Only axial reluctance is modeled.
Thickness or length of air gap at the beginning of simulation. The default value is 2 mm.
Minimal value of air gap, with the reluctance force acting to close the air gap. The parameter value has to be greater than 0. The default value is 1e-4 mm.
Area of the section being modeled. The default value is 0.01 m^2.
Relative permeability of the section material. The default value is 1.
Stiffness that models the hard stop at the minimum air gap position. The default value is 10e6 N/m.
Damping that models the hard stop at the minimum air gap position. The default value is 500 N/(m/s).
The block has the following ports: