基于统计分析的发动机性能衰减指标研究

摘要

The sensitivity of engine monitored parameter to component performance parameter was ana-lyzed by engine component model ,index that fully represents performance deterioration was selected ac-cording to PRESS principle , change of engine performance was tracked by establishing statistics of per-formance deterioration index residual sequence .The Results indicate:index residual sequence can confirm key point of performance change ,monitor engine performance ,provide decision to realizing passive main-tenance.%采用发动机部件模型进行发动机监测参数对部件性能参数的敏感度分析，并依据PRESS准则优化选取充分表征发动机性能衰减的监测参数，通过建立性能衰减指标残差序列的统计量，跟踪分析发动机性能变化规律。仿真结果表明，性能衰减指标残差序列能够确定性能变化关键点，能够监控发动机的状况变化，为发动机实现主动维护提供决策支持。