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A Generic Fault Maturing and Clearing Strategy for Continuous On-Board Diagnostic Monitoring
Technical Paper
2016-01-0633
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Per California Air Resources Board (CARB) regulations, On-board diagnostic (OBD) of vehicle powertrain systems are required to continuously monitor key powertrain components, such as the circuit discontinuity of actuators, various circuit faults of sensors, and out-of-range faults of sensors. The maturing and clearing of these continuous monitoring faults are critical to simplification of algorithm design, save of engineering cost (i.e., calibration), and reduction of warranty issues. Due to the nature of sensors (to sense different physical quantities) and actuators (to output energy in desired ways), most of OEM and supplies tend to choose different fault maturing and clearing strategy for sensors and actuators with different physics nature, such as timer-based, counter-based, and other physical-quantity-based strategies. Such choice brings substantial inconvenience and incurs large engineering cost for automotive manufacturers, because more and more sensors are replaced by smaller and smarter sensors that have different physics nature while achieving the same sensing functionality. It is, hence, desired to have a generic fault maturing and clearing strategy to commonize the handling of different sensors and actuators, to simplify the transition to a new hardware configuration, to provide fast and accurate maturing approach, and to smoothly handle smart sensors/actuators. This research proposed a generic fault maturing and clearing strategy to achieve the above objectives by utilizing unitless indices to mature and clear faults, standardizing the inputs and outputs, and improving compatibility with multiple designer-input options.
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Citation
Guo, Y., "A Generic Fault Maturing and Clearing Strategy for Continuous On-Board Diagnostic Monitoring," SAE Technical Paper 2016-01-0633, 2016, https://doi.org/10.4271/2016-01-0633.Also In
References
- California Air Resource Board sections 1968.2 http://www.arb.ca.gov/msprog/obdprog/section1968_2_clean2013.pdf
- Doskocil , D.C. , Offt , A.M. General Electronic Company, Method for fault diagnosis by assessment of confidence measure 1994
- Rauscher , K. F. Method and system for conducting statistical quality analysis of a complex system 1995
- Sarangapani , J. , Schricker , D. R. Method and apparatus for predicting a fault condition 1997
- Mukherjee , U. , Kundu , A. System and method to detect errors and predict potential failures 2008
- Volponi , A.J. Hybrid model based fault detection and isolation system 2004
- Wilson , E. Model-based fault detection and isolation for intermittently active faults with application to motion-based thruster fault detection and isolation for spacecraft 2008
- Butler , S.W. Method for calculating confidence on prediction in fault diagnosis systems 2008
- Wittliff , W.W. , Underdal , O.M. , Gilbert , H.M. , Portyanko , A. Dynamic decision sequencing method and apparatus for optimizing a diagnostic test plan 2015
- Parenti , D. Managing and Configuring On-Board Diagnostics SAE Technical Paper 2009-01-1428 2009 10.4271/2009-01-1428
- Palai , D. Vehicle Level Approach for Optimization of On-Board Diagnostic Strategies for Fault Management SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 6 1 261 275 2013 10.4271/2013-01-0957