| WANG Song，GAO Ya-hui，GAO Feng，DUAN Shao-dong，WANG Jian-feng.Fault-tolerant Control for Main Fuel Actuator of Aeroengine[J].航空发动机,2023,49(1):134-138 |
| Fault-tolerant Control for Main Fuel Actuator of Aeroengine |
| DOI： |
| Key Words:FADEC Pole-zero configuration fault-tolerant control adaptive speed control aeroengine |
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| Abstract:In order to realize the adaptive speed control within the full envelope of the aeroengine when the displacement sensor of the
main fuel metering valve fails, a fault-tolerant control method based on pole-zero configuration was proposed according to the aeroengine
adaptive speed control principle. According to the error between the high pressure rotor speed control plan and the measured speed, the
main fuel control electro-hydraulic servo valve current was calculated in the closed loop control system. The pole-zero configuration princi?
ple was used to integrate the control parameters with the speed adaptive control, and the parameters were adaptively adjusted with the en?
gine state change in the full envelope. The semi-physical simulation test was conducted to verify the fault-tolerant control method. The re?
sults show that the fault-tolerant control method can ensure the stable operation of the digital electronic control system in the full envelope,
and exhibits good steady-state and dynamic performance. The steady state error of the high-pressure rotor speed is within ± 0.15%, the
overshoot and undershoot are below 0.63% and 0.61% respectively. The fault-tolerant control method is easy to implement and strong in
adaptability. It plays an important role in improving the reliability of aeroengine digital electronic control system. |
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