Abstract
This paper deals with a new type of miniature air compressor that mainly consists of a linear electromagnetic actuator, electronic drive circuit, cylinders, and intake and output valves. The cylinders are directly driven by the linear electromagnetic actuator without other mechanisms so it can be made smaller in size. The two rotors type balance mechanism is used to reduce the vibration of the compressor. The characteristics of this miniature compressor are experimentally investigated. In order to obtain better characteristics, the input signal frequency should be adjusted to make the compressor operate at a resonant rate as the output pressure changes. Two adjusting methods are proposed and their effectiveness is proven through experiments. By directly controlling the compressor the speed of pressure increase can be regulated and a constant pressure can also be supplied in the tank. These possibilities are confirmed by experimental results.
