公开(公告)号：US20020093327A1

公开(公告)日：2002-07-18

申请号：US09989396

申请日：2001-11-21

Applicant: LG Electronics, Inc.

Inventor： Yoo Jae Yoo ,  Jae Chun Lee ,  Min Kyu Hwang ,  Chel Woong Lee

IPC: G01R023/00 ,  G01R023/12

CPC classification number: F04B35/045 ,  F04B49/065 ,  F04B2201/0202 ,  F04B2203/0201 ,  F04B2203/0202

Abstract: An apparatus for detecting shaking of stroke of a linear compressor and a method are provided. A linear compressor mis-operates due to change in an external voltage or noise because the shaking of the stroke is detected by the amounts of change in the stroke or current. In order to solve the above problem, a control apparatus of a compressor includes a stroke/current phase difference calculator for calculating the phase differences of the stroke and current using the stroke and the current, which are determined by the increase and the reduction of the stroke due to the voltage generated by a linear compressor, a phase difference change amount calculator for calculating phase difference change amounts using the calculated phase differences of the stroke and the current, a 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 stroke voltage according to the magnitude of the request of cooling capacity, which is determined by the change in load, to thus control the driving of the linear compressor, during the operation of the linear compressor.

Abstract translation: 提供了一种用于检测线性压缩机的行程抖动的装置和方法。 线性压缩机由于外部电压或噪声的变化而失灵，因为行程的振动是通过行程或电流的变化量来检测的。 为了解决上述问题，压缩机的控制装置包括行程/电流相位差计算器，用于计算使用行程和电流的行程和电流的相位差，这是通过增加和减少确定的 由线性压缩机产生的电压引起的行程;相位差变化量计算器，用于使用计算出的行程和电流的相位差计算相位差变化量;振动检测器，用于将计算出的相位差变化量与参考值进行比较 用于确定是否检测到行程的振动，从而确定行程的晃动;以及行程控制器，用于从行程抖动检测器接收行程抖动检测信号，并根据冷却请求的大小改变行程电压 容量，由负载变化决定，从而控制李的驾驶 在压缩机附近，在线性压缩机运行期间。