| Citation: | LIU X L，LI J K. Iterative learning control of electric load simulator of aircraft steering gear[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（9）：2727-2738 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0711
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The electric load simulator of aircraft steering gear (ELSSG) is disturbed by redundant torque. To address this issue,a compound controller combining iterative learning control and robust integral control of sign of error (RISE) was proposed. The mathematical model of the load simulator was established, and the generation mechanism of excess torque was analyzed.In terms of the hardware structure, the metal-rubber buffer spring was introduced to improve the stability and loading accuracy of the system. In terms of the control strategy, the compound controller was designed based on the robust integral control of error signs and the iterative learning control of the guidance signal improved by adaptive forgetting factor, and the convergence condition of the iterative learning control was proven. The simulation experiment proves that the compound controller can eliminate the interference from redundant torque more effectively than the traditional iterative learning control method and PID control method and improve the load torque output accuracy of the load simulator.
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