A Design of Finite Memory Residual Generation Filter for Sensor Fault Detection

Abstract

In the current paper, a residual generation filter with finite memory structure is proposed for sensor fault detection. The proposed finite memory residual generation filter provides the residual by real-time filtering of fault vector using only the most recent finite observations and inputs on the window. It is shown that the residual given by the proposed residual generation filter provides the exact fault for noise-free systems. The proposed residual generation filter is specified to the digital filter structure for the amenability to hardware implementation. Finally, to illustrate the capability of the proposed residual generation filter, numerical examples are performed for the discretized DC motor system having the multiple sensor faults.

Integrated fault detection for industrial process monitoring based on multi-dimensional Taylor network

“…Threshold computation: to achieve a successful fault detection based on the residual error, a threshold selector is adopted to evaluate the residual error (Long and Yang, 2015; Proll et al , 2018; Kim, 2017). The limit monitoring may be expressed as:…”