检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:张文林 赵珍 ZHANG Wenlin;ZHAO Zhen(Engineering Training Center,Civil Aviation University of China,Tianjin 300300,China;College of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China)
机构地区:[1]中国民航大学工程技术训练中心,天津300300 [2]中国民航大学电子信息与自动化学院,天津300300
出 处:《现代电子技术》2022年第10期111-114,共4页Modern Electronics Technique
基 金:国家自然科学基金青年基金项目(61703406);中国民航大学中央高校科研业务费(3122017019;3122019109)。
摘 要:针对实际系统中连续因素导致的故障传播问题,文中提出一种基于系统变量运行数据,将经验模式分解算法和能量因子相结合的故障传播概率评估方法。该方法首先采集系统不同位置、组件的输入和输出变量数据;其次,应用经验模式分解算法对系统变量数据进行特征分解,得到分解残量。该残量反映信号中去除任务调整、噪声等因素对数据影响后的无波动趋势量,通过这种方式可消除系统变量正常波动对于故障传播评估的影响。分解后的无波动趋势量隐含了系统组件受连续因素影响而形成的趋势性变化,因此采用能量因子进行表征,并根据正常工况及异常工况下的变量能量变化率计算故障传播概率,实现故障传播的概率评估。最后,通过仿真验证所提方法的可行性和有效性。In allusion to the problem of fault propagation caused by continuous factors in the actual systems,a fault propagation probability evaluation method combing the empirical mode decomposition algorithm with energy factor and based on system variable operation data is proposed. In the method,the input and output variable data of different locations and components of the system is collected, and then the empirical mode decomposition algorithm is used to perform the characteristic decomposition for the system variable data,so as to obtain the decomposed residual quantity. This residual quantity can reflect the non-fluctuating trend quantity in the signal after removing the influence of task adjustment,noise and other factors on the data. In this way,the influence of the normal fluctuation of system variables on the evaluation of fault propagation can be eliminated. The non-fluctuating trend quantity after decomposition implies the trend change of system components affected by continuous factors. Therefore,the energy factor is used for characterization,and the fault propagation probability is calculated according to the variable energy change rate under normal and abnormal working conditions,so as to realize the probability evaluation of fault propagation. The simulation experiments verify the feasibility and effectiveness of the proposed method.
关 键 词:故障传播 概率评估 系统变量 特征分解 分解残量 无波动趋势量 仿真验证
分 类 号:TN911-34[电子电信—通信与信息系统] TP206[电子电信—信息与通信工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.70