Robust control and coordination of engine systems

Author

Raftar, Abbas ; Le Yi Wang ; Orzel, D.

Author_Institution

Powertrain Core Competency, Ford Motor Co., Allen Park, MI, USA

fYear

1996

fDate

15-18 Sep 1996

Firstpage

786

Lastpage

791

Abstract

In this paper, a novel two-step design procedure is introduced for robust control and coordination of engine idle speed and emission systems. The procedure starts with the optimal broad-band decoupling of engine subsystems via feedforward compensation. The problem can be reduced to a standard H^∞ optimization problem and solved by using Nevanlinna-Pick interpolation. A robust decentralized control in H^∞ is then employed to achieve robust stabilization and disturbance attenuation of the compensated systems. A computer search algorithm for optimal decentralized PI controllers is developed. Benefits of the two-step design include modularization of control tasks, enhancement of robustness and performance, reduction of calibration time and complexity

Keywords

H^∞ control; angular velocity control; automobiles; decentralised control; interconnected systems; internal combustion engines; interpolation; robust control; search problems; two-term control; H^∞ control; H^∞ optimization; Nevanlinna-Pick interpolation; PI controllers; automotive engines; decentralized control; disturbance attenuation; emission system; engine idle speed; feedforward compensation; interconnected systems; optimal broad-band decoupling; robust control; search algorithm; two-step design; Attenuation; Control systems; Distributed control; Engines; Interconnected systems; Interpolation; Mechanical power transmission; Optimal control; Robust control; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1996., Proceedings of the 1996 IEEE International Conference on

Conference_Location

Dearborn, MI

Print_ISBN

0-7803-2975-9

Type

conf

DOI

10.1109/CCA.1996.558966

Filename

558966