Abstract
Output tracking of systems, which are represented through a surrogate first-order model with a delay in the control input, is examined in this paper. A dynamic control input is proposed to maintain the system output to track a desired reference profile, while providing closed-loop stability. The system closed-loop response is demonstrated for fueling control in lean-burn gasoline spark ignition engines addressing the varying transport and combustion delays. The developed methodology, which is validated on a Ford F-150 SI lean-burn engine model with large time-varying delay in the control loop, exhibits improved performance in terms of disturbance attenuation, measurement noise accommodation and robustness against delay estimation anomalies. The proposed controller is compared with a PI controller equipped with a Smith predictor and the results are discussed for various operating conditions.
Original language | English (US) |
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Pages (from-to) | 269-274 |
Number of pages | 6 |
Journal | IFAC-PapersOnLine |
Volume | 28 |
Issue number | 12 |
DOIs | |
State | Published - Jul 1 2015 |
Event | 12th IFAC Workshop on Time Delay Systems, TDS 2015 - Ann Arbor, United States Duration: Jun 28 2015 → Jun 30 2015 |
Keywords
- Dynamic control
- Lean-burn engine
- Output tracking
- Time-delay system
ASJC Scopus subject areas
- Control and Systems Engineering