Design, manufacture and experimental characterization of magnetorheological rotary brake based on a peristaltic pump system

In this article, the design and manufacture of an innovative Magnetorheological Fluid(MR) rotary brake based on a peristaltic pump inspired by the concept model of the pliers and the Rochester-Pean forceps are presented. For the calculation and analysis of created structure comprehensive of roller, housing and pliers, simulations concerning stress and strain are conducted to investigate the deformation and possible parts or assembly failure. Experimental assessment, including measurements of compression force and magnetic field were conducted to evaluate the performance of proposed design. MR rotary brake is based on peristaltic pump system constituted by tube containing MR fluid and arms inspired by the concept of the pliers in the Rochester-Pean forceps. The control of peristaltic pump without gear motor is carried out with an internal magnetic field with the goal to work as an a hand that is blocked grabbing the object. The movement of the system is controlled by the viscosity of the MR material inside the tube of rotary system.