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Mohieddine Jelali
Control Performance Monitoring in the Metal Industry, Part 1: Classification and Description of Methods
Keywords: Control performance monitoring, minimum variance, feedforward control, oscillation index, performance optimisation
In practice, a large proportion of control loops in the metal industry has performance problems due to missing maintenance and optimisation. The continuous assessment and monitoring of the controller performance is thus highly recommended. Part 1 of this paper presents a classification of control performance monitoring (CPM) methods into three groups (for evaluating the performance level, detecting special malfunctions, and optimising the process and control). Particularly characteristic methods of each group, which find special interest in assessing control loops in the metal industry, are described. The paper proposes a new approach for continuous performance monitoring by integrating controller assessment, problem diagnosis and performance optimisation into an “adaptive optimisation loop”. The required model identification and parameterisation of the methods are described. Particularly, the topic of time-delay determination/estimation is discussed.
at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag
Print ISSN: 0178-2312
Volume: 54, 01/2006
Pages: 036 - 046