Optimal design of the incidence matrix for structured residual approach with maximized sensitivity (SRAMS) is discussed in this paper

in order to overcome the shortcoming of SRAMS that ignores the speed and sensitivity of fault diagnosis while considering the isolability of fault codes in the incidence matrix design.A set of optimal design indices including fault sensitivity and fault diagnosis sensitivity were defined

based on which two design algorithms were developed.The proposed approach was tested in the sensor fault detection and diagnosis of a fluidized catalytic cracking unit

and simulation results showed that the diagnosis performance was better than original SRAMS.