This research paper would be devoted to the application of a fault-tolerant control (FTC) for a benchmark system composed of three interconnected tanks in case of sensor faults. The control scheme includes two blocks: fault detection and isolation (FDI) block and a control law reconfiguration block. The strategy of the FDI method is based on a bank of high gain observers; each of them is constructed to estimate the system state vector. Thus, the diagnostic signal-residuals are generated by the comparison of measured and estimated outputs and the faulty sensor is isolated. The reconfiguration block performs an update of the controller parameters according to the operating mode. The application of this method to a pilot plant demonstrates that the hydrographic system maintains quite performances after sensor faults occurrence.

中文翻译：

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传感器故障时三箱系统的容错控制

本研究论文将致力于在传感器故障情况下将容错控制（FTC）应用于由三个相互连接的储罐组成的基准系统。该控制方案包括两个模块：故障检测和隔离（FDI）模块和一个控制规则重新配置模块。FDI方法的策略是基于大量高收益观察者。它们每个都构造为估计系统状态向量。因此，通过比较测量的输出和估计的输出来生成诊断信号残差，并隔离故障传感器。重新配置块根据操作模式执行控制器参数的更新。该方法在中试工厂的应用表明，水文系统在发生传感器故障后仍保持相当的性能。