Magnetorheological Transmission for Total Artificial Heart

We proposed a new transmission to control the flow difference between left and right pumps in total artificial hearts. The consists of input output shafts, magnetorheological fluid, electromagnets with adjustable current position. A motor rotates shaft transmission. transfers torque that decelerated rotational speed according resistance fluid. First, we measured when load is 5 mNm, was 2000 rpm. shafts changed from 450 rpm 6 increased electromagnet 0.4 0.55 A. 2 219 moved position 9 mm. Also, analyzed magnetic flux density distribution change or by 3D computational field analysis. These results show affects speed. yield stress identified based on results. In this paper, developed enough small has sufficient performance.