Fault detection for piecewise affine systems with application to ship propulsion systems

ISA Trans. 2018 Jul:78:3-9. doi: 10.1016/j.isatra.2017.08.016. Epub 2017 Sep 9.

Abstract

In this paper, the design approach of non-synchronized diagnostic observer-based fault detection (FD) systems is investigated for piecewise affine processes via continuous piecewise Lyapunov functions. Considering that the dynamics of piecewise affine systems in different regions can be considerably different, the weighting matrices are used to weight the residual of each region, so as to optimize the fault detectability. A numerical example and a case study on a ship propulsion system are presented in the end to demonstrate the effectiveness of the proposed results.

Keywords: Continuous piecewise Lyapunov function; Diagnostic observer; Fault detection (FD) systems; Piecewise affine systems.