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The problem of simultaneous air-fuel ratio regulation and torque tracking in a spark ignition engine with electronic throttle control is considered. The proposed methodology involves the use of a set of piecewise-affine models to represent the nonlinear engine dynamics. These models are the basis of a supervisory multiple-model control scheme, which, in its simplest form, consists in switching among the predefined bank of controllers. In the following a monitoring signal generator is driven by a bank of observers, and a supervisor ensures the robustness of the switching scheme. An optimal linear-quadratic cost function enables the trade-off between emissions performance and drivability to be adjusted. Simulation results using the data obtained from a vehicle with a 5.3L V8 engine on Federal Test Procedure (FTP) driving cycles are presented, with a nonlinear regression model of the engine identified from the FTP data. The results indicate that both tight lambda regulation and fast torque tracking are possible using the proposed designs.
|Publication status||Published - Dec 2009|
|Event||2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling - Rueil-Malmaison, France|
Duration: 30 Nov 2009 → 2 Dec 2009
|Conference||2009 IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling|
|Period||30/11/09 → 2/12/09|
- multivariable lambda
- torque control
- sl engines
- engine modelling
- powertrain control
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- 1 Finished
Grimble, M., Katebi, R. & Ordys, A.
1/05/05 → 30/04/10