Neural Modeling and Control of Diesel Engine with Pollution Constraints

Details Neural Modeling and Control of Diesel Engine with Pollution Constraints Neural Modeling and Control of Diesel Engine with Pollution Constraints

2009-07-20

arxiv.org/abs/0907.3342v1

Journal of Intelligent and Robotic Systems 41, 2-3 (2005) 157-171

Computer Science

Learning

15 pages

Scientific paper

10.1007/s10846-005-3806-y

The paper describes a neural approach for modelling and control of a turbocharged Diesel engine. A neural model, whose structure is mainly based on some physical equations describing the engine behaviour, is built for the rotation speed and the exhaust gas opacity. The model is composed of three interconnected neural submodels, each of them constituting a nonlinear multi-input single-output error model. The structural identi?cation and the parameter estimation from data gathered on a real engine are described. The neural direct model is then used to determine a neural controller of the engine, in a specialized training scheme minimising a multivariable criterion. Simulations show the effect of the pollution constraint weighting on a trajectory tracking of the engine speed. Neural networks, which are ?exible and parsimonious nonlinear black-box models, with universal approximation capabilities, can accurately describe or control complex nonlinear systems, with little a priori theoretical knowledge. The presented work extends optimal neuro-control to the multivariable case and shows the ?exibility of neural optimisers. Considering the preliminary results, it appears that neural networks can be used as embedded models for engine control, to satisfy the more and more restricting pollutant emission legislation. Particularly, they are able to model nonlinear dynamics and outperform during transients the control schemes based on static mappings.

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