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:
Jun. 02, 2020
Filed:
Aug. 31, 2017
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Srujan Kusumba, Louisville, KY (US);
Gregory William Hahn, Louisville, KY (US);
Michael Lee McIntyre, Louisville, KY (US);
Joseph W. Latham, Louisville, KY (US);
Haier US Appliance Solutions, Inc., Wilmington, DE (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Abstract
A method for detecting head crashing in a linear compressor includes sampling a rolling average of a peak applied voltage and a desired peak current each time that a current controller adjusts the desired peak current. The method also includes calculating a linear regression for a predicted peak applied voltage as a function of the desired peak current, calculating the predicted peak voltage for the motor of the linear compressor with the linear regression and a current value for the desired peak current from the current controller, and establishing that a piston of the linear compressor is soft crashing when the predicted peak voltage is different than the current value for the rolling average of the peak applied voltage by more than a threshold value.