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Minimizing Disturbance Detection Time in Hydraulic Systems
Technical Paper
2020-01-0263
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In a hydraulic system, parameter variation, contamination, and/or operating conditions can lead to instabilities in the pressure response. The resultant erratic pressure profile reduces performance and can lead to hardware damage. Specifically, in a transmission control system, the inability to track pressure commands can result in clutch or variator slip which can cause driveline disturbance and/or hardware damage. A variator is highly sensitive to slip and therefore, it is advantageous to identify such pressure events quickly and take remedial actions. The challenge is to detect the condition in the least amount of time while minimizing false alarms. A Neyman-Pearson and an energy detector (based on auto-correlation) are evaluated for the detection of pressure disturbances. The performance of the detectors is measured in terms of speed of detection and robustness to measurement noise. The implications in terms of computations and memory utilization of implementing the detectors in real-time embedded systems are also discussed. Both simulation and hardware examples are presented. The hardware experiment is performed in a hydraulic system with low damping composed of a solenoid and a regulator valve connected to an electro-hydraulic actuator. From the simulation and hardware experimental data, it is concluded that the auto-correlation detector yields acceptable performance while reducing computation time, and memory usage.
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Citation
Otanez, P. and Bhogadi, R., "Minimizing Disturbance Detection Time in Hydraulic Systems," SAE Technical Paper 2020-01-0263, 2020, https://doi.org/10.4271/2020-01-0263.Data Sets - Support Documents
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References
- Wells , P. New Business Models and the Automotive Industry The Global Automotive Industry John Wiley & Sons 2015
- Bai , S. , Maguire , J. , and Peng , H. Dynamic Analysis and Control Design of Automatic Transmissions SAE International 2013
- Mohammadpour , J. , Franchek , M. , and Grigoriadis , K. A Survery on Diagnostics Methods for Automotive Engines Proceedings of the 2011 American Control Conference San Francisco, CA July 2011
- Huh , K. , Han , K. , Hong , D. , Kim , J. et al. A Model-Based Fault Diagnosis System for Electro-Hydraulic Brake SAE Technical Paper 2008-01-1225 2008 https://doi.org/10.4271/2008-01-1225
- Otanez , P. , Lee , C. , Xu , C. , Kao , C.K. , and Farzad , S. Torque Converter Clutch Low Slip Detection and Control Proceedings of the ASME 2010 Dynamic Systems and Control Conference 1 September 2010
- Jorques Moreno , C. , Stenlaas , O. , and Tunestal , P. Cylinder Pressure Based Method for In-Cycle Pilot Misfire Detection SAE Technical Paper 2019-24-0017 2019
- Helm , S. , Koze , M. , and Jakubek , S. Combustion Torque Estimation and Misfire Detection for Calibration of Combustion Engines by Parametric Kalman Filtering IEEE Transactions on Industrial Electronics 59 11 November 2012
- Merritt , H.E. Hydraulic Control Systems John Wiley & Sons Inc. 1991
- Bai , S. , Moses , R. , Schanz , T. , and Gorman , M. Development of a New Clutch-to-Clutch Shift Control Technology SAE Technical Paper 2002-01-1252 2002 https://doi.org/10.4271/2002-01-1252
- Van der Meulen , S. , de Jager , B. , Veldpaus , F. , van der Noll , E. et al. Improving Continuously Variable Transmission Efficiency with Extremum Seeking Control IEEE Transactions on Control Systems Technology 2012
- van Drogen , M. and van der Laan , M. Determination of Variator Robustness under Macro Slip Conditions for a Push Belt CVT SAE Technical Paper 2004-01-0480 2004 https://doi.org/10.4271/2004-01-0480
- Poor , H.V. An Introduction to Signal Detection and Estimation Springer-Verlag 1994
- Urkowitz , H. Energy Detection of Unknown Deterministic Signals Proceedings of the IEEE 55 4 April 1967
- Chan , D. and Rabiner , L. Analysis of Quantization Errors in the Direct Form for Finite Impulse Response Digital Filters IEEE Transactions on Audio and Electroacoustics 21 4 August 1973
- Park , K.Y. Performance Evaluation of Energy Detectors IEEE Transactions on Aerospace and Electronic Systems AES-14 2 March 1978