Monitoring and diagnosing process control performance: The single-loop case

This paper presents a hierarchical method for monitoring and diagnosing the performance of single-loop control systems which 1) identifies significant deviations from control objectives, 2) determines the best achievable performance with the current control structure, and 3) identifies steps to improve the current performance. Within the last point, the method can isolate whether poor performance is due to the feedforward loop or the feedback …