ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Previously, authors developed a novel linear actuator with flat-ring-shaped magnets and applied it to a pump. In this article, the output power of the actuator and the efficiency of the pump are obtained by experiments. A pair of flat-ring-shaped Nd–Fe–B magnets having N and S poles on the surface are put on the same axis and face each other. Rotating one of the ring magnets in the direction of its circumference, an oscillating force occurs on the other magnet. When this magnet is restricted to linear motion along the axis, the mechanical power driving the rotating magnet is transferred to the linear motion power. A pump was made with this mechanism. The efficiency of the pump is experimentally obtained, where water pressure difference between the intake and the outlet has been changed. As a result, the efficiency of the pump attains to about 45%. The efficiency of the actuator itself is very high, because the actuator has no copper and iron losses, and a negligibly small eddy current loss. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.367558
