Barnabás Horváth - University of Pannonia, Institute of Physics and Mechatronics, Egyetem u.10, 8200 Veszprém, Hungary
Tibor Medvegy - University of Pannonia, Institute of Physics and Mechatronics, Egyetem u.10, 8200 Veszprém, Hungary
Gergely Kronome - University of Pannonia, Institute of Physics and Mechatronics, Egyetem u.10, 8200 Veszprém, Hungary
Zoltán Gugolya - University of Pannonia, Institute of Physics and Mechatronics, Egyetem u.10, 8200 Veszprém, Hungary

We designed and constructed an electrorheological (ER) and a magnetorheological (MR) damper to reduce the oscillations of the rotor of a stepper motor after positioning. The effectiveness of the MR and ER dampers were measured with an electronic unit – designed for this work –attached on one end of the shaft of the (double-shaft) rotor. The unit contained a digital accelerometer, some data acquisition and signal condition circuits, a battery for power supply, and a radio frequency module for transmitting the measured data to a processing software implemented in LabVIEW. Settling times of the oscillations at different applied field strengths were recorded and compared to results of simulations performed in Simulink

stepper motor, electrorheological fluid, magnetorheological fluid, electrorheological damper, magnetorheological damper