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Adaptive Idle Speed Control for Spark-Ignition Engines
Technical Paper
2007-01-1197
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Due to the nonlinear time-varying nature of the spark-ignition engine, an adaptive multi-input single-output (MISO) controller based on self-tuning regulator (STR) is proposed for idle speed control in this paper. The spark timing and idle air control are simultaneously employed as control inputs for maintaining the desired idle speed, and are designed based on P and PI type STR, respectively. The Recursive Least Square technique is employed to identify the engine as a first-order MISO linear model. Pole placement technique is then used to design the adaptive MISO controller. Performances of the proposed algorithm are evaluated using a nonlinear engine model in Matlab/Simulink. The system parameters with 10% uncertainties are also utilized to perform the associated robustness analysis. Preliminary simulation results show significant reduction of speed deviations under the presence of torque disturbances and model uncertainties.
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Citation
Hsieh, F., Chen, B., and Wu, Y., "Adaptive Idle Speed Control for Spark-Ignition Engines," SAE Technical Paper 2007-01-1197, 2007, https://doi.org/10.4271/2007-01-1197.Also In
References
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