Abstract Performance seeking control benefits propfan engine by generating optimal performance in different flight status. It is based on engine model, control model and optimization model. The control scheme of propfan engine is different from those of turbofan engines, for the thrust of propfan engines is mainly produced by propfans. After analysing the control structure of propfan engines, a control scheme for the propfan engine is proposed. The control scheme works well in flight envelope and the simulation results show that the overshoot of power shaft rotation speed is less than 2 % and the settling time is less than 0.9s. Based on this, a control scheme in performance seeking mode is proposed. A Modified Cuckoo Search method, which modifies the search step size and abandonment rate, is applied in the control scheme in maximum thrust mode and minimum fuel flow mode. The control scheme in performance seeking mode can reduce 2 % fuel flow, compared with the control scheme in torque-compensation mode. Performance of the scheme is better than standard Cuckoo Search and Genetic Algorithm.

中文翻译：

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基于修正布谷鸟搜索的Propfan引擎性能寻求控制

摘要 性能寻求控制通过在不同飞行状态下产生最佳性能来使螺旋桨发动机受益。它基于发动机模型、控制模型和优化模型。桨扇发动机的控制方案与涡扇发动机不同，桨扇发动机的推力主要由桨扇产生。在分析了桨扇发动机的控制结构后，提出了桨扇发动机的控制方案。该控制方案在飞行包线内运行良好，仿真结果表明动力轴转速超调小于2%，稳定时间小于0.9s。在此基础上，提出了一种性能寻求模式下的控制方案。一种修改的布谷鸟搜索方法，它修改了搜索步长和放弃率，应用于最大推力模式和最小燃油流量模式的控制方案。与扭矩补偿模式下的控制方案相比，性能寻求模式下的控制方案可以减少 2% 的燃油流量。该方案的性能优于标准的布谷鸟搜索和遗传算法。