CAJ | 학술논문

将液体火箭发动机故障诊断问题转化为故障特征的模式分类问题。针对当前模式分类方法难以处理不确定性信息、属性特征空间的划分过硬等缺陷，结合云模型和云变换研究，提出了一种基于云分类器的液体火箭发动机起动过程故障诊断方法。历次试车数据的验证结果表明，该方法能够及时准确识别发动机起动工作过程中的故障模式。
장액체화전발동궤고장진단문제전화위고장특정적모식분류문제。침대당전모식분류방법난이처리불학정성신식、속성특정공간적화분과경등결함，결합운모형화운변환연구，제출료일충기우운분류기적액체화전발동궤기동과정고장진단방법。력차시차수거적험증결과표명，해방법능구급시준학식별발동궤기동공작과정중적고장모식。
Through transforming the fault diagnosis into the pattern classification of fault characteristics,a fault diagnosis method was developed,based on the cloud sorter for liquid-propellant rocket engines.The method synthesized the study on cloud model and the cloud transform,which can deal with the uncertainty and the hard partition of domain boundary for the quantitative attributes which exist in the traditional classification methods.Caculation results with test data show that the method can recognize the fault modes in the startup process of the engine timely and precisely.