Closed-Loop Performance Monitoring in the Presence of System Changes and Disturbances

This paper addresses issues in closed loop performance monitoring. Particular attention is paid to detecting whether an observed deviation from nominal performance is due to a disturbance or due to a system change. This is achieved by introducing a novel performance measure that allows feasible application of a standard CUSUM change detector. The paper includes explicit results on the probability of mistaking a disturbance for a system change and demonstrates the algorithm with a simulation study.

[1]  Tore Hägglund.  Automatic Monitoring of Control Loop Performance , 1994 .

[2]  Paul M. Frank,et al.  Fault Diagnosis in Dynamic Systems , 1993, Robotics, Mechatronics and Manufacturing Systems.

[3]  Manfred Morari,et al.  Performance monitoring of control systems using likelihood methods , 1996, Autom..

[4]  Stefan F. Graebe,et al.  Robust and adaptive control of an unknown plant: A benchmark of new format , 1993, Autom..

[5]  P. L. Goldsmith,et al.  Cumulative Sum Tests: Theory and Practice , 1969 .

[6]  G. Box,et al.  Cumulative Sum Tests: Theory and Practice , 1968 .

[7]  Xue Jun Zhang,et al.  Auxiliary Signal Design in Fault Detection and Diagnosis , 1989 .

[8]  E. S. Page.  CONTINUOUS INSPECTION SCHEMES , 1954 .

[9]  P.-G. Eriksson,et al.  Some aspects of control loop performance monitoring , 1994, 1994 Proceedings of IEEE International Conference on Control and Applications.

[10]  D. Siegmund.  Sequential Analysis: Tests and Confidence Intervals , 1985 .

[11]  Michèle Basseville,et al.  Detection of abrupt changes: theory and application , 1993 .

[12]  Graham C. Goodwin,et al.  Digital control and estimation : a unified approach , 1990 .

[13]  J. Macgregor,et al.  Monitoring and Diagnosing Process Control Performance: The Single-Loop Case , 1991, 1991 American Control Conference.

[14]  Interex.  Real-time interface , 1991 .

[15]  B. Pasik-Duncan,et al.  Adaptive Control , 1996, IEEE Control Systems.

[16]  T. Harris.  Assessment of Control Loop Performance , 1989 .

[17]  Rolf Isermann,et al.  Robust adaptive control of a time varying process using parallel recursive estimators , 1994, Autom..