Abstract:

In this paper, a step by step scheme for evaluating different sensor-configurations is proposed and applied to the airpath of internal combustion engines. The evaluation is based on a linear multiple model approach which describes the nonlinear system behavior in different operating points. The overall goal of evaluating sensor-configurations is to reconstruct the states of the process in the presence of measurement noises, disturbances and a system model with deviations caused by an forward euler discrete implementation, as exactly as possible. In a three step framework, first structural process information, then quantitative information on observability and at last a (sub)-optimal full state observer structure is designed and evaluated for possible sensor-configurations.