Abstract:

An approach of fault detection and isolation using optimal parity vector is proposed. Its main idea is to design a performance criterion which makes the optimal parity vector be most sensitive to designated sensor’s fault and least sensitive to other sensor’s fault and unknown inputs such as noises. Through the Monte Carlo simulation, it is shown that the approach of choosing optimal parity vector greatly increases the ability of fault detection and the effectiveness of fault isolation is better than that of the GLT approach.

Key words: fault detection and isolation, parity vector, optimization