论文信息 - A simple method for detection of stiction in control valves

A simple method for detection of stiction in control valves

Abstract A simple method diagnosing oscillations in process control loops is presented. The new method is based on the cross-correlation between control input and process output and it is shown to correctly distinguish between two important reasons for oscillations in control loops in the process industry, namely external oscillating disturbances and static friction (stiction) in control valves.

Alexander Horch

[1] Tore Hägglund,et al. A Control-Loop Performance Monitor , 1995 .

[2] C. T. Seppala,et al. A review of performance monitoring and assessment techniques for univariate and multivariate control systems , 1999 .

[3] H. Saunders. Literature Review : RANDOM DATA: ANALYSIS AND MEASUREMENT PROCEDURES J. S. Bendat and A.G. Piersol Wiley-Interscience, New York, N. Y. (1971) , 1974 .

[4] Henrik Olsson,et al. Control Systems with Friction , 1996 .

[5] Rüdiger Deibert,et al. Model Based Fault Detection of Valves in Flow Control Loops , 1994 .

[6] Tore Hägglund. The Idle Index , 1997 .

[7] Guy A. Dumont,et al. Detection and diagnosis of oscillations in control loops , 1996, Proceedings of 35th IEEE Conference on Decision and Control.

[8] Krister Forsman,et al. A new criterion for detecting oscillations in control loops , 1999, 1999 European Control Conference (ECC).

[9] Anders Wall. VALVE DIAGNOSTICS AND AUTOMATIC TUNING , 1997 .

[10] A. Wallen. Valve diagnostics and automatic tuning , 1997, Proceedings of the 1997 American Control Conference (Cat. No.97CH36041).

[11] Alf Isaksson,et al. A Method for Detection of Stiction in Control Valves , 1998 .