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    • 55. 发明申请
    • METHOD AND SYSTEM FOR DIAGNOSING A MACHINE
    • 用于诊断机器的方法和系统
    • US20100161175A1
    • 2010-06-24
    • US12063466
    • 2007-06-26
    • Hideo YamadaMakoto SakaiKazumoto MatsufujiJun Tanaka
    • Hideo YamadaMakoto SakaiKazumoto MatsufujiJun Tanaka
    • G01M15/02E02F9/26
    • F02D29/00E02F9/26E02F9/267F02D41/0007F02D41/021F02D41/22Y02T10/40
    • A machine diagnosing system is provided which can make an abnormality/failure diagnosis of a machine without using threshold values. It is composed of a dynamic state management controller that creates frequency distribution information showing a relationship between signal intensity related to engine output and occurrence frequency whenever the machine body is operated for a predetermined time, a management section that receives and stores pieces of frequency distribution information, and terminal equipment and each of which detects a decrease in engine output by arranging the pieces of frequency distribution information obtained from the management section in time series and by comparing these pieces of information with each other. A decrease in engine output can be detected, without using threshold values, by comparison between the pieces of frequency distribution information stored concerning the output of the engine, unlike a case in which the abnormality/failure of the machine is determined by comparison with a conventional threshold value or in which the degree of such abnormality is ranked by comparison there.
    • 提供了一种能够在不使用阈值的情况下对机器进行异常/故障诊断的机器诊断系统。 它包括动态状态管理控制器,每当机体运行预定时间时,产生频率分布信息,该频率分布信息表示与发动机输出相关的信号强度与发生频率之间的关系;管理部分,接收和存储频率分布信息 以及终端设备,并且通过将从管理部获得的频率分布信息按时间序列排列并且通过将这些信息彼此进行比较来检测发动机输出的下降。 通过与存储的关于发动机的输出的各个频率分布信息之间的比较,可以检测发动机输出的下降而不使用阈值,这与通过与常规的比较来确定机器的异常/故障的情况不同 阈值或通过比较来评价异常程度。