Design and optimization of a spherical magnetorheological actuator
Recently, an increasing number of electromagnetic devices have been using smart fluids. These include ferrofluids, electrorheological fluids, and magnetorheological (MR) fluids. In the paper, magnetorheological fluids are considered for use in a spherical actuator for haptic applications. An approach is presented to the design and optimization of such a device, using finite element method modelling linked with differential evolution (DE). Much consideration was given to the construction of the objective function to be minimized. A novel approach to objective function assembly was used, using reference values based on the model design and created with parameters set to the midpoint values of the selected range. It was found to be a useful strategy when the reference values are unknown. There were four parameters to be optimized. Three of them gravitated towards the boundary value, and the fourth (actuator radius) was somewhere in between. The value of the objective function reached a minimum in the range of actuator radius between 42.9880 mm and 45.0831 mm, which is about a 5% difference in regard to the actuator radius. Three passes of optimization were performed with similar results, proving the robustness of the algorithm.
2023
2024-05-22 14:50:09
1033
magnetorheological fluid, finite element method, FEM, optimization, differntial evolution, DE, actuator
magnetne tekočine, metoda končnih elemetov, diferencialna evolucija
dk_c
MDPI
Jakob
Vizjak
70
Anton
Hamler
70
Marko
Jesenik
70
UDK
4
621.3
COBISS_ID
3
166722819
DOI
15
10.3390/math11194098
ISSN pri članku
9
2227-7390
mathematics-11-04098.pdf
4912915
Predstavitvena datoteka
2024-05-22 14:52:24
0
Izvorni URL
2024-05-22 14:52:45