Performance assessment of multivariable feedback controllers
Automatica (Journal of IFAC)
Good, bad or optimal? Performance assessment of multivariable processes
Automatica (Journal of IFAC)
Performance Assessment of Control Loops: Theory and Applications
Performance Assessment of Control Loops: Theory and Applications
Closed-Loop Performance Monitoring in the Presence of System Changes and Disturbances
Automatica (Journal of IFAC)
Paper: Performance monitoring of control systems using likelihood methods
Automatica (Journal of IFAC)
Survey Paper: From Youla-Kucera to Identification, Adaptive and Nonlinear Control
Automatica (Journal of IFAC)
Closed-loop monitoring for early detection of performance losses in feedback-control systems
Automatica (Journal of IFAC)
Hi-index | 22.15 |
The proper measure of closed-loop performance variation in the presence of model-plant mismatch is discussed in this paper. A generalized closed-loop error transfer function, which is a special representation of the dual Youla parameter and has a close relationship with the pointwise @n-gap metric, is proposed as the suitable means of representing closed-loop performance variation in case of plant perturbation, and the closed-loop performance variation measure is accordingly defined as its maximum singular value frequency by frequency. It is shown that this measure is essential and informative in characterizing closed-loop performance variation. This measure is also shown to be readily applicable to on-line closed-loop performance assessment or monitoring, even without the explicit model of the plant. Its variant, defined as the @h-function, which features the relative performance variation as well as generalized stability margin variation with respect to the nominal plant, is also discussed.