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Adaptive integral sliding mode fault-tolerant control for diesel engine air path system via disturbance observer
  • +2
  • Shaoping Wang,
  • Wenjie Wu,
  • Yuwei Zhang,
  • Xingjian Wang,
  • Jian Zhang
Shaoping Wang
Beihang University School of Automation Science and Electrical Engineering

Corresponding Author:shaopingwang@vip.sina.com

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Wenjie Wu
Beihang University School of Automation Science and Electrical Engineering
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Yuwei Zhang
Beihang University School of Automation Science and Electrical Engineering
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Xingjian Wang
Beihang University School of Automation Science and Electrical Engineering
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Jian Zhang
Shanghai Marine Diesel Engine Research Institute
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Abstract

This paper proposes a fault-tolerant control strategy for the air path system of a turbocharged diesel engine, considering the simultaneous presence of matched and mismatched external disturbances, additive and loss of effectiveness fault modes in the EGR and VGT subsystems. Firstly, a disturbance observer based on H ∞ theory is designed for estimating additive faults and external disturbances, and the upper bound of observation error is obtained. Based on the observation information, an integral sliding mode surface is designed, and the effectiveness of the sliding mode surface is analyzed. For the loss of effectiveness faults in the actuators, a novel adaptive update sliding mode controller is designed. The proposed control algorithm can get the fault information of the system and achieve fault-tolerant control of through controller reconstruction. Ultimately, the effectiveness of the proposed method is validated through simulations and comparative analysis.
25 Sep 2023Submitted to International Journal of Robust and Nonlinear Control
25 Sep 2023Submission Checks Completed
25 Sep 2023Assigned to Editor
25 Sep 2023Review(s) Completed, Editorial Evaluation Pending
27 Sep 2023Reviewer(s) Assigned
11 Nov 2023Editorial Decision: Revise Minor