Adaptive Sensor Fault-Tolerant Control for Distributed Parameter Systems

doi:10.1109/TCYB.2026.3662494

Adaptive Sensor Fault-Tolerant Control for Distributed Parameter Systems

2026-02-18

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DOI：10.1109/TCYB.2026.3662494

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Sensor drift, which is the deviation of measurements over time, can compromise controller performance and cause system instability. To address this challenge, this article proposes a proactive fault-tolerant control strategy for distributed parameter systems. The proposed strategy is based on a time-varying spatiotemporal model that captures system dynamics. The initial phase of this research involves designing an adaptive observer-based detector to identify the temporal and spatial locations of fault occurrences accurately. Subsequently, a joint state-and-fault estimator is developed to accurately reconstruct the fault profile, even in the presence of strong state–fault coupling. The controller provides real-time corrections based on the estimation results. A rigorous stability analysis of the closed-loop system is provided, and the effectiveness of the controller is validated through experiments involving two distinct fault scenarios.

Keywords:

Distributed parameter system (DPS)

fault detection

fault-tolerant control (FTC)

thermal process

Adaptive Sensor Fault-Tolerant Control for Distributed Parameter Systems

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