Influencing Factors for Magnetic Circuit Environment of the Magnetorheological Fluid Dynamometer

The magnetic circuit environment is the most important factor restricting the normal operation of the magnetorheological fluid (MRF) device. A good magnetic circuit environment can make the MRF dynamometer more economical and practical. In this paper, a new MRF dynamometer is used as the research object. The magnetic field simulation is carried out by Ansoft Maxwell software to study the influence of magnetic isolation ring, magnetic permeability material, Working gap and Excitation current on the magnetic field performance of MRF dynamometer. The research shows that the magnetic induction line distribution in the working gap of the MRF dynamometer is relatively uniform, the magnetic induction intensity is in the range of 120-162 mT, For materials with higher permeability, the stronger the magnetic induction intensity in the working gap is. This research has certain guiding significance for the magnetic circuit optimization of MRF dynamometer.