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:
Feb. 14, 2023
Filed:
Jun. 07, 2021
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Myunghwa Ind. Co., Ltd., Seoul, KR;
Sung Wook Jang, Suwon-si, KR;
Dong Kuk Han, Seoul, KR;
MinSu Kim, Seoul, KR;
Chin Chul Choi, Suwon-si, KR;
Byung Jun Hwang, Seoul, KR;
Hyung Suk Kim, Suwon-si, KR;
Abstract
An apparatus for reducing noise of a gear pump through uneven pitch-simulated control includes a calculation unit to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed, a storage unit to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth, and a current controller to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor.