Method of controlling the course of an engine of a linear compressor piston engine and compressor free piston linear free taking a course controlled

摘要

The controller of the linear compressor. The present invention relates to a method and apparatus for detecting collisions without sensor piston in a free piston linear compressor motor.The waveform of the counter EMF in stator windings included engine is analysed to discontinuity of curvature and other aberrations in a time window centered on zero crossingsCounter EMF. The artifacts of curvature waveform are indicative of piston collisions and the energy of the engine to be reduced in response.