The propagation of whole plant oscillations through a chemical process plant

Abstract The change in harmonic content of oscillations as they propagate through a plant is modelled by examining ratios of observed signals. Heuristics are then proposed to enable these models to be characterised without recourse to detailed plant identification. This results in a harmonic-content based procedure to isolate the source of an oscillation. The procedure is tested on bi-amplitude ratio data generated from measurements obtained from a real industrial plant.

[1]  Wonhui Cho,et al.  Multiloop PI controller tuning for interacting multivariable processes , 1998 .

[2]  Nina F. Thornhill,et al.  Diagnosis of plant-wide oscillation through data-driven analysis and process understanding , 2003 .

[3]  Peter A. Cook,et al.  Nonlinear dynamical systems , 1986 .

[4]  John Howell,et al.  Isolating the root cause of propagated oscillations in process plants , 2005 .

[5]  Karl Johan Åström,et al.  Assessment of Achievable Performance of Simple Feedback Loops , 1988 .

[6]  G. K. Mcmillan.  Improve control valve response , 1995 .

[7]  T. Hägglund.  A friction compensator for pneumatic control valves , 2002 .

[8]  Chih-Hung Chiang,et al.  A direct method for multi-loop PI/PID controller design , 2003 .

[9]  Karl Johan Åström,et al.  Dominant pole placement for multi-loop control systems , 2002, Autom..

[10]  Alexander Horch.  A simple method for detection of stiction in control valves , 1999 .

[11]  Nina F. Thornhill,et al.  Detection of multiple oscillations in control loops , 2003 .

[12]  Nina F. Thornhill,et al.  ANALYSIS OF PLANT-WIDE DISTURBANCES THROUGH DATA-DRIVEN TECHNIQUES AND PROCESS UNDERSTANDING , 2002 .

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

[14]  M A Sharif,et al.  Sensor-based performance monitoring of a control valve unit , 1999 .

[15]  Nina F. Thornhill,et al.  DETECTION OF DISTRIBUTED OSCILLATIONS AND ROOT-CAUSE DIAGNOSIS , 2001 .

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

[17]  A qualitative shape analysis formalism for monitoring control loop performance , 2001 .

[18]  Tore Hägglund,et al.  Detection and Diagnosis of Oscillation in Control Loops , 1997 .

[19]  Chunming Xia,et al.  Isolating multiple sources of plant-wide oscillations via independent component analysis , 2003 .