In order to solve simultaneous multi-leak problem of the pipeline, a method to detect multi-leak of pipeline by using optical fiber detection technology is proposed. Firstly, use optical fiber sensors to detect pressure signal, then construct the residual generator based on the fault diagnosis observer, and the leak coefficients are extracted by the residual error. Secondly, make the observer has good robustness to the unknown input disturbance by using the decoupling technology for disturbance. Stability of the fault diagnosis observer is proven by using the Lyapunov function and Barbalat lemma. The approach can detect and estimate the leak coefficients. Experiment results show that the effectiveness of the propsed approach.

为了解决管道同时多泄漏的问题，提出了一种利用光纤检测技术检测管道多泄漏的方法。首先，使用光纤传感器检测压力信号，然后根据故障诊断观察器构造残差发生器，利用残差提取出泄漏系数。其次，通过使用去耦干扰技术，使观察者对未知输入干扰具有良好的鲁棒性。使用Lyapunov函数和Barbalat引理证明了故障诊断观测器的稳定性。该方法可以检测和估计泄漏系数。实验结果表明该方法的有效性。