The invention discloses a
magnetorheological fluid characteristic tester, including a rack device, a transmission device, a lifting device, a shearing device and a control
measurement device. Torque and rotating speed required by rotation are provided through a main motor, and a dynamic
torque sensor is directly connected with the main motor; an upper shearing disc transmits shear yield stress tothe
torque sensor through an upper
magnetic core; the lifting device mainly comprises a lifting motor and a
ball screw, and a lead screw nut at the lower end is connected with an electrical support ina transmission part; and the shearing device consists of a
magnetic circuit, a coil, a heating device and a
magnetism isolation sealing component. The
magnetorheological fluid characteristic tester has the advantages of simple structure, convenient operation, high safety and complete functions, and is relatively wide in measurement range; a trapezoid
magnetic circuit structure is adopted, and themagnetic circuit is stable and uniform; a motor lifting control scheme is adopted, thereby realizing
automatic control of detection; a multi-input heating mode is adopted, and the temperature is adjustable and controllable; and a
sand bath heating mode is adopted, stability and reliability are achieved, and controllable temperature is high.