Volume 29 Issue 7
Jul.  2014
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WANG Lei, XIE Shou-sheng, PENG Jing-bo, YANG Yong, REN Li-tong. Optimal guaranteed cost fault-tolerant control with bi-index constraints for aero-engine distributed control system[J]. Journal of Aerospace Power, 2014, (7): 1729-1737. doi: 10.13224/j.cnki.jasp.2014.07.028
Citation: WANG Lei, XIE Shou-sheng, PENG Jing-bo, YANG Yong, REN Li-tong. Optimal guaranteed cost fault-tolerant control with bi-index constraints for aero-engine distributed control system[J]. Journal of Aerospace Power, 2014, (7): 1729-1737. doi: 10.13224/j.cnki.jasp.2014.07.028

Optimal guaranteed cost fault-tolerant control with bi-index constraints for aero-engine distributed control system

doi: 10.13224/j.cnki.jasp.2014.07.028
  • Received Date: 2013-04-24
  • Publish Date: 2014-07-28
  • The passive fault-tolerant control was studied for aero-engine distributed control system with parameter perturbation, Markov time-delay, data dropout and external disturbance when interval random actuator faults occurred. An optimal guaranteed cost fault-tolerant controller was designed under double constran of H and cost performance index. At the beginning, uncertain parameters were described quantitatively. Based on the description a closed-loop augmented model was built. Then sufficient conditions for asymptotic stability with bi-index constraints of the augmented system were derived. The design approach of guaranteed cost fault-tolerant controller was proposed. Finally the optimal guaranteed cost fault-tolerant controller was designed based on consistency theory. Simulation results show that the devised controller ensures the closed-loop system asymptotically stable when interval random actuator faults occur, and have a certain H performance. Besides, when low-pressure rotor speed has 1% step change, the maximum main fuel mass flow and throat area in this controller are 16.03% and 16.93%, respectively, of that in optimal robust H fault-tolerant controller.

     

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