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:
Apr. 28, 2009
Filed:
Feb. 03, 2006
Wan IL Kim, Gyeonggi-do, KR;
Jeong Woo Lee, Gyeonggi-do, KR;
Wan Il Kim, Gyeonggi-do, KR;
Jeong Woo Lee, Gyeonggi-do, KR;
Mando Corporation, Seoul, KR;
Abstract
An electronically controlled suspension system according to the present invention comprises a sensor unit for extracting and providing a vertical acceleration component of a vehicle body of a vehicle; a signal processing unit for calculating a vertical velocity of the vehicle body using the vertical acceleration component provided by the sensor unit; a control gain determining unit having a control gain set according to the amplitude of the vertical acceleration component, and detecting the amplitude of the vertical acceleration component provided by the sensor unit and extracting a control gain corresponding to the detected amplitude; a control command value calculating unit for calculating a control command value using the control gain provided by the control gain determining unit and the vertical velocity of the vehicle body provided by the signal processing unit; and a damper driving unit for driving the variable damper based in the control command value. According to the present invention described above, a control command value for use in controlling a damping force of a damper is calculated using a nonlinear control gain according to a signal outputted from a speed or vertical acceleration sensor, thereby securing ride comfort and control stability.