航空發動機的無序度在整個演化過程是在不斷變化的。本文引入了信息熵理論，用多元聯合熵來刻畫航空發動機的有序性和演化方向。實際數據分析表明：用多元聯合熵描述的航空發動機的性能演變趨勢與實際情況吻合。本文的研究為航空發動機及其它復雜機械系統的性能監控提出了一種新的普適性方法。
關鍵詞：航空發動機，熵理論，多元聯合熵，性能監控
Performance Analysis of Aero-engine Based on Multi-Joint Entropy Li Juntao , Zhang Fengming, Li Yongbing （Engineering Institute, Air Force Engineering University, Xi’an 710038, China） Abstract: Aero-engine’s disorder parameter varies during its Evolution. Information entropy theory was introduced into this paper, and multi-joint entropy was used to depict the aero-engine’s disorder parameter and evolutive trend. Real data analysis showed that result was basically in accord with actual situation. A new general approach for aero-engine and other complex mechanical system performance monitoring was put forward.
Keywords：Aero-engine, Entropy Theory, Multi-Joint Entropy, Performance Monitoring