Application of sliding mode observers to automobile powertraindiagnostics

摘要

This paper presents a model based approach to the problem ofautomobile powertrain monitoring. A model discrete crank-angle domainmodel is derived. A procedure for designing discrete sliding modeobservers, for state and input estimation is presented and applied tothe powertrain estimation problem. The sliding observers are used in thenonlinear parity equation residual generation scheme for fault detectionand isolation. Experimental results are provided to demonstrate that thedesigned observers estimate the powertrain states with good accuracy andthat the monitoring scheme is effective in isolating both actuator andsensor faults