CAJ | 학술논문

涡轴发动机数控系统传感器故障诊断需机载的发动机数学模型,由于缺乏部件特性数据,根据某型发动机地面试车稳态数据和动态数据,建立涡轴发动机慢车以上状态简化数学模型。该模型具有较好的实时性,稳态模型采用插值算法,动态模型针对不同参数分别采用动态系数法和转子动力学方法。数值仿真结果表明：该简化模型具有较高的动态和稳态精度,可以满足传感器故障诊断的需求。
와축발동궤수공계통전감기고장진단수궤재적발동궤수학모형,유우결핍부건특성수거,근거모형발동궤지면시차은태수거화동태수거,건립와축발동궤만차이상상태간화수학모형。해모형구유교호적실시성,은태모형채용삽치산법,동태모형침대불동삼수분별채용동태계수법화전자동역학방법。수치방진결과표명：해간화모형구유교고적동태화은태정도,가이만족전감기고장진단적수구。
The simplified above-idle mathematic model of turboshaft engine was developed based on steady and transient engine ground test data because buliding an accurate on-board mathematics model for sensor fault diagnostics of aeroengine digital control system was quite difficult due to lack of detailed component characteristics. The interpolated algorithm, a transient coefficient method and rotor dynamics formula were used for the modeling, which makes the model support real-time simulation. Both steady operation and transient operation of the engine are simulated. The results show that the model has a satisfying precision, and can meet the demands of sensor fault diagnostics of aeroengine digital control system.