STROKE DETECTING APPARATUS AND METHOD FOR RECIPROCATING COMPRESSOR

PURPOSE: A device and a method for detecting the stroke of a reciprocating compressor are provided to remove a deviation generated by resistance and inductance by estimating the stroke by a counter electromotive force, thereby reducing the stroke estimation error. CONSTITUTION: A device for detectin...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, CHEOL UNG, SUNG, JI WON, YOO, JAE YU, LEE, HYEOK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: A device and a method for detecting the stroke of a reciprocating compressor are provided to remove a deviation generated by resistance and inductance by estimating the stroke by a counter electromotive force, thereby reducing the stroke estimation error. CONSTITUTION: A device for detecting the stroke of a reciprocating compressor includes a counter electromotive force detecting element(10) for detecting a counter electromotive force for a predetermined section in which no current is flowing in a motor. A stroke estimating element(20) operates a stroke estimation value by the counter electromotive force. A stroke controller(30) compares the stroke estimation value with a stroke command value to vary a voltage applied to the motor according to a difference between the values, thereby controlling the stroke. 본 발명은 왕복동식 압축기의 스트로크 검출장치 및 방법에 관한 것으로, 역기전력을 이용하여 스트로크를 추정함으로써, 레지스턴스와 인덕턴스에 의해 발생하는 편차를 제거하여 스트로크 추정오차를 감소시키도록 한 것이다. 이를 위하여 본 발명은 왕복동식 압축기에 있어서, 모터에 전류가 흐르지 않는 일정 구간동안에, 역기전력을 검출하는 역기전력검출수단과; 상기 역기전력을 이용하여 스트로크 추정치를 연산하는 스트로크 추정수단과; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 그에 따라 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 스트로크 제어수단을 포함하여 구성한다.