Study Of Control Technology For Aero-engine AVEN

The technology of the4th generation fighters has been rapidly developed in recent years, whichrequired aero-engine more and more advanced technology; the appearance of technical of victor-nozzlehas consumedly improved fighter performance on stall fly, tack-off and landing with short distance etc..In order to catch up with the advanced country in this field, the study on technical of vector-nozzlecontrol was researched deeply in this paper. Research results can provide technical support for thevector-nozzle applied to the domestic aircraft as soon as possible.Based on reviewing the development history of aero-engine vector-nozzle and analyzing ofcurrent research the status in the domestic and on the abroad, the necessity of research vector-nozzlecontrol technology was discussed; and then was the realization of vector-nozzle control based on ofdigital control system. After analyzed movement of the axial-symmetric vectoring exhaust nozzle, theservo mechanism inner loop controller、simulation module of inner loop、loop coupling controller andfailure process of vector-nozzle were researched and designed, MATLAB simulation、semi-physicalsimulation test and aero-engine bench test were carried out afterwards for study results validation.Simulation and test result shows that: vector control of axial-symmetric vectoring exhaust nozzle wasachieved with the design of the vector-nozzle inner-loop and loop coupling controller. The loopcoupling controller design was put up to solve the problems of three actuator moving out of sync whenresponding any victory angle and defluxion angle. The vectoring exhaust nozzle victory controlmovement presents excellence on stability、safety、response speed and accuracy.