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| DOI：https://doi.org/10.1007/s11768-019-8212-8 |
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| Nonlinear Observer-based Control Design and Experimental Validation for Gasoline Engines with Exhaust Gas Recirculation |
| Weihai JIANG,Tielong SHEN |
| (Department of Engineering of Science, Sophia University, Chiyoda-ku Tokyo 102-8554, Japan) |
| Abstract: |
| This paper presents a nonlinear observer-based control design approach for gasoline engines equipped with exhaust gas
recirculation (EGR) system. A mean value engine model is designed for control which includes both the intake manifold and
exhaust manifold dynamic focused on gas mass flows. Then, the nonlinear feedback controller based on the developed model
is designed for the state tracking control, and the stability of the close loop system is guaranteed by a constructed Lyapunov
function. Since the exhaust manifold pressure is usually unmeasurable in the production engines, a nonlinear observer-based
feedback controller is proposed by using standard sensors equipped on the engine, and the asymptotic stability of the both
observer dynamic system and control dynamic system are guaranteed with Lyapunov design assisted by the detail analysis of the
model. The experimental validations show that the observer-based nonlinear feedback controller is able to regulate the intake
pressure and exhaust pressure state to the desired values during both the steady-state and transient conditions quickly by only
using the standard sensors. |
| Key words: Engine, exhaust gas recirculation (EGR), Lyapunov design, stability, observer-based stabilizing control |
