BRAKING DEVICE AND ROTATING REGULATOR WITH ERF

摘要

We propose a device of rotating regulator with electrorheological fluid (ERF). The regulation of number of revolutions of rotating body in the ERF is controlled by supplying an electric field. It is a new type of devices with ERF for the applications in engineering. It has a role of braking as well as regulation for rotating. We conduct experimental research on the device for measuring the torque and the number of revolutions of the rotating body at a D. C. electric field. Our conducting experimental conditions are at the range of comparatively small number of revolutions. Our used ERF is type of colloidal suspension with elasticity. First, we measure the data that reach at the constant value in the time. We obtain increment of apparent viscosity from measured data. We compare them in case of disk type and in case of conical one as the rotating body. In addition, we compare them for two kinds of solvent in the ERF. Secondly, we explain the experimental results of static characteristics of the number of revolutions versus electric field strength using a theoretical model of ERF taking elasticity into account. The results are due to the increment of apparent viscosity.