发动机控制系统限时派遣运行的成本优化方法

限时派遣TLD可以提高飞机的签派可靠度，降低由于航班延误或取消导致的运行损失。面向TLD分析建立了典型发动机控制系统马尔可夫模型，利用连续时间马尔可夫链CTMC推导了状态稳态频率公式，构建了系统单位时间运行成本模型。以平均完整性要求及签派可靠度要求为约束条件，以带故障派遣时间为决策变量，以系统单位时间运行成本以及签派可靠度为优化目标，分别构建了TLD分析的单目标和多目标优化模型。结合简化的发动机控制系统和实际全权限数字式发动机电子控制FADEC系统给出了工程应用实例，验证了模型的有效性。实例表明本文方法能够保证飞机在满足安全性要求和签派可靠度要求的条件下降低运行成本。

Operational cost optimization method for time-limited dispatch of engine control system

Time-Limited Dispatch (TLD) can improve the reliability of aircraft dispatch and reduce operational losses caused by flight delays or cancellations. A Markov model of a typical engine control system is established for TLD analysis, a steady-state frequency formula is derived using a Continuous-Time Markov Chain (CTMC), and a system unit time cost model is constructed. Taking average safety requirements and dispatch reliability requirements as constraints, failure dispatch time as decision variables, and the system unit time cost and dispatch reliability as optimization goals, we establish the single and multiple goals of TLD analysis. An engineering application example is given to verify the effectiveness of the model by combining the simplified engine control system and the Full Authority Digital Electronic Control (FADEC) system. Examples show that the proposed method can reduce operating costs while ensuring the satisfaction of the safety and dispatch reliability requirements of the aircraft.