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    AUTOMATIC CONTROL LOOP MONITORING AND DIAGNOSTICS
    1.
    发明公开
    AUTOMATIC CONTROL LOOP MONITORING AND DIAGNOSTICS 失效
    系统监测和诊断自控回路

    公开(公告)号：EP0907913A1

    公开(公告)日：1999-04-14

    申请号：EP97917186.0

    申请日：1997-04-22

    申请人： Pulp and Paper Research Institute of Canada

    发明人： OWEN, James, Gareth

    IPC分类号： G05B23

    CPC分类号： G05B23/024

    摘要： A method of diagnosing a malfunction of a process control system which includes at least one closed loop control loop comprising measuring a histogram of tracking error of the control loop, determining distortion of the tracking error relative to a Gaussian distribution, and indicating a malfunction in the process in the event a deviation from the Gaussian distribution of the tracking error exceeds predetermined limits.