公开(公告)号：US20040067140A1

公开(公告)日：2004-04-08

申请号：US10385475

申请日：2003-03-12

Applicant: LG Electronics Inc.

Inventor： Jae Yoo Yoo ,  Chel Woong Lee ,  Ji Won Sung ,  Kyuk Lee

IPC: F04B049/06

CPC classification number: F04B49/06 ,  F04B35/045 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402 ,  G05B2219/43182

Abstract: In an apparatus and a method for controlling operation of a compressor, by removing deviation generated by resistance and inductance and removing an error in a stroke estimation value of a compressor, operation of the compressor can be accurately controlled. The apparatus includes a counter electromotive force detector for detecting a counter electromotive force generated at a motor of a compressor. A stroke calculator calculates a stroke estimation value of the compressor on the basis of the counter electromotive force, and a stroke controller controls a stroke of the compressor by varying a voltage applied to the motor on the basis of the calculated stroke estimation value and a stroke reference value.

Abstract translation: 在用于控制压缩机的操作的装置和方法中，通过消除由电阻和电感产生的偏差并消除压缩机的行程估计值中的误差，可以精确地控制压缩机的操作。 该装置包括用于检测在压缩机的电动机处产生的反电动势的反电动势检测器。 行程计算器基于反电动势计算压缩机的行程估计值，并且行程控制器基于计算的行程估计值和行程来改变施加到电动机的电压来控制压缩机的行程 参考值。

公开(公告)号：US20040066163A1

公开(公告)日：2004-04-08

申请号：US10406307

申请日：2003-04-04

Applicant: LG Electronics Inc.

Inventor： Jae Yoo Yoo ,  Chel Woong Lee ,  Ji Won Sung ,  Hyuk Lee

IPC: G05D023/275

CPC classification number: F04B35/045 ,  F04B49/06 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402

Abstract: An apparatus and a method are disclosed for controlling operation of a compressor capable of greatly decreasing a stroke estimation error of a compressor and controlling operation of the compressor accurately and precisely. The method includes calculating a first stroke estimation value of a compressor on the basis of current, a voltage applied to a motor of a compressor and preset parameters of the motor. Detecting a counter electromotive force of the motor and calculating a second stroke estimation value of the compressor on the basis of the detected counter electromotive force value. Determining a new stroke reference value by comparing the first stroke estimation value with the second stroke estimation value, adding or subtracting a stroke compensation value corresponding to the comparison result to or from a preset stroke reference value, and controlling a stroke of the compressor by varying a voltage applied to the motor on the basis of the determined stroke reference value and the first stroke estimation value.