Research on Magnetic Field Characteristics of Counter-roller Magnetorheological Transmission Device Under Different Coil Arrangements

Aiming at the problem of serious temperature rise in the power transmission process of the traditional magnetorheological fluid transmission device, a counter-roller structure is proposed. This paper analyzes the magnetic field characteristics of counter-roller magnetorheological fluid drives with different coil arrangements. Based on the theory of electromagnetism, the magnetic field design of the counter-roller magnetorheological transmission device was carried out. The magnetic field simulation results show that under the condition the current is 1.5A and the working gap is 1.5 mm, the magnetic induction intensity of the working area under different arrangements can reach more than 0.5A, which meets the working requirements. The working magnetic field intensity increases with the increase of current, decreases with the increase of the working gap, and increases with the increase of material permeability. The average magnetic induction intensity under the radial coil arrangement is larger than that under the circumferential coil arrangement. The combined use of circumferential coil and radial coil arrangement can improve the magnetic field distribution characteristics in the working area of the roller drive, thus further improving its transmission characteristics.