1. Institute of Automation, Hefei University of Technology, Hefei, Anhui 230009, China
2. Engineering Technology Research Center of Industrial Automation, Hefei, Anhui 230009, China
3. School of Mechanism and Automobile, Hefei University of Technology, Hefei, Anhui 230009, China
Abstract：An experimental scheme of step response of UEGO sensor is designed based on automobile engine in order to build up a dynamic model of UEGO and calculate its performance indexes in the time domain. Many experiments are performed in different exhaust temperatures and input amplitude values. The raw experiment data are analyzed and processed to obtain the proper input and output data for modeling. The prediction error method is adopted to identify the dynamic model of UEGO sensor. Various operating conditions are taken into the dynamic model to verify its applicability.
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2010, Vol. 31 
