The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2008
Filed:
Sep. 24, 2003
Ji-won Sung, Seoul, KR;
Chel-woong Lee, Seoul, KR;
Jae-yoo Yoo, Gwangmyeong, KR;
Hyuk Lee, Siheung, KR;
Hyung-jin Kim, Seoul, KR;
Ji-Won Sung, Seoul, KR;
Chel-Woong Lee, Seoul, KR;
Jae-Yoo Yoo, Gwangmyeong, KR;
Hyuk Lee, Siheung, KR;
Hyung-Jin Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a stroke with a counter electromotive force induced by a searching coil. Furthermore, by leaving errors of inductance and resistance, among all motor parameters, out of consideration in stroke estimation, a stroke estimation error can be reduced.