Patent ID: 6541953
Filing Date: 2003-04-01
Classification: F04B

Abstract:
A control apparatus of a compressor, comprising:a stroke/current phase difference detector for detecting the phase differences of stroke and current using the stroke and the current, which are determined by the increase and the reduction of a stroke due to a voltage applied to a linear compressor; a phase difference change amount calculator for calculating phase difference change amounts using the detected phase differences of the stroke and the current; a stroke shaking detector for comparing the calculated phase difference change amounts with a reference value for determining whether the shaking of the stroke is detected, to thus determine the shaking of the stroke; and a stroke controller for receiving a stroke shaking detection signal from the stroke shaking detector and changing the applied voltage according to the magnitude of the request of cooling capacity, which is determined by the change of load, to thus control the driving of the linear compressor, during the operation of the linear compressor.