TITLE:
Responsiveness Improvement of Idling Speed Control for Automotive Using SMC
AUTHORS:
Yang ZHANG, Nobuo KURIHARA, Hiroyuki YAMAGUCHI
KEYWORDS:
Gasoline Engine, Intake Air Control, Sliding Mode Control, Simulation
JOURNAL NAME:
Journal of Software Engineering and Applications,
Vol.2 No.5,
December
28,
2009
ABSTRACT: To improve the responsiveness of engine speed control to disturbances, robust controls were investigated by simulation. The intake air control system of a gasoline engine is a typical nonlinear system, and the disturbances and parameter perturbations are generally regarded as being the unstable factors with regard to engine control. In this paper, a Mean-Value Engine Model (MVEM) with disturbances and parameter perturbations is investigated using Sliding Mode Control (SMC), which is a form of variable structure control, with a view to address instability in the idle speed control process. The simulation results confirmed that, compared with a conventional PI (Proportional-Integral) controller, the stability of the idle speed for an engine that is being subjected to disturbances, parameter variations and background noise is greatly improved by the application of SMC.