Fault diagnosis viewed as a left invertibility problem

作者：Martinez Guerra R^*; Mata Machuca J L; Rincon Pasaye J J

来源：ISA Transactions, 2013, 52(5): 652-661.

DOI：10.1016/j.isatra.2013.06.001

• Fault diagnosis
• Left invertibility condition
• Differential output rank
• Sliding mode observer
• Reduced order observer

This work deals with the fault diagnosis problem, some new properties are found using the left invertibility condition through the concept of differential output rank. Two schemes of nonlinear observers are used to estimate the fault signals for comparison purposes, one of these is a proportional reduced order observer and the other is a sliding mode observer. The methodology is tested in a real time implementation of a three-tank system.

• 出版日期2013-9