Title:
可変送出しポンプ付きの液圧システム用のモデルベースレール圧力制御
Document Type and Number:
Japanese Patent JP2004522901
Kind Code:
A
Abstract:
A method of controlling a hydraulic system is preferably applied to common rail fuel injection systems. The problem in these systems is to control pressure in the common rail while at the same time maintaining the fluid supply to the rail in a way that precisely meets the dynamically changing consumption demands on the hydraulic system. In order to control the hydraulic system, the present invention contemplates the combination of a standard feedback controller with observer models of the various hardware items that make up the hydraulic system. Using this strategy, the system can generally be thought of as controlling fluid supply in an open loop type fashion based upon the consumption rates estimated by the various observer models, and utilizing a conventional feedback controller to make the slight pump adjustments needed to control pressure and to correct for any errors between the actual hardware performance and that predicted by the observer models.
Inventors:
Travis E. Burns
Dennis El Daraji
Douglas E. Handley
Majin Liu
Michael S. Rukichi
George M. Matta
David M. Millman
Nolan W. Wartic
Dennis El Daraji
Douglas E. Handley
Majin Liu
Michael S. Rukichi
George M. Matta
David M. Millman
Nolan W. Wartic
Application Number:
JP2002579636A
Publication Date:
July 29, 2004
Filing Date:
February 26, 2002
Export Citation:
Assignee:
CATERPILLAR INCORPORATED
International Classes:
F02D1/02; F02D41/04; F02D41/14; F02D41/20; F02D41/38; F02D45/00; F02M37/08; F02M55/02; F02M37/00; F02M63/02; F02M69/00; (IPC1-7): F02D41/04; F02D1/02; F02D41/20; F02D45/00; F02M37/00; F02M37/08; F02M55/02; F02M69/00
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe