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:
Aug. 24, 2004
Filed:
Oct. 06, 2003
Shigeki Kondo, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide a throttle valve control apparatus which simultaneously realizes quick response and stability even when the throttle valve gets stuck in its operation. The apparatus conducts control where a small control coefficient is used to emphasize the convergence stability when the deviation is large. In addition, the apparatus includes a coefficient limiting unit ( ) which can gradually increase the control coefficients based on the predetermined permissible changes as the deviation decreases with the elapse of time. This enables the throttle valve control apparatus which simultaneously realizes the quick response and stability by using the controlled variable calculated from the gradually increased control coefficients to drive the throttle valve even when the throttle valve gets stuck, and its motion encounters an obstruction.