In case of failure of aero-engine main fuel metering valve actuator

the output of system will have the jumping problem

and will not track the system to the desired output. The model reference adaptive design method of active fault tolerant controller will solve this problem. Firstly

the actuator faults have been described mathematically. Secondly

the system nominal model was selected as the reference model

and the output error minimization selected as optimization objective; then lyapunov stability theory was used to search for a suitable adaptive law

and an adaptive fault tolerant controller was designed. Finally

the numerical simulation of different fault diagnosis of engine operating points was conducted. The simulation results show that

in case of jumping fault and blocking of the main fuel metering valve

adaptive fault tolerant controller can automatically adjust the parameters

making the system output track the model output

and the final tracking error is nearly zero.