• Civil Aviation • Previous Articles     Next Articles

Fault-tolerant reconfiguration of flight control system based on pseudo-inverse and optimal method

SHI Zhi-bo1a,2,SUN Dan1b.LIU Tao1a   

  1. (1a. Robotics Institute,Aeronautical Automation College;1b. Civil Aircraft Airworthiness and Maintenance Key Lab of Tianjin,CAUC,Tianjin 300300,China;2. Electrical Engineering and Automation College,Harbin Institute of Technology,Harbin 150001,China)
  • Received:2014-06-03 Revised:2014-07-13 Online:2014-12-25 Published:2014-12-05

Abstract:

For the problem of fault-tolerant reconfiguration and handling quality requirements under damaged or failed aircraft control surface,a fault-tolerant reconfiguration project is given for multivariable flight control system based on the linear quadratic optimal regulator (LQR)and pseudo-inverse method. LQR is applied to achieve the stability and optimal design of flight control system,the general description form is established to every fault type,then the control law reconfiguration is realized with pseudo-inverse method and the optimal design is achieved by LQR theory simultaneously. The strictly positive real and global asymptotic stability of the closedloop control system is ensured. Aiming at typical faults,the reconfiguration scheme is verified by computer simulation,which demonstrates that the scheme could ensure effective control of the aircraftwith actuators faults.

Key words: flight control system, pseudo-inverse method, linear quadratic regulator, fault-tolerant reconfiguration, multivariable control

CLC Number: