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This paper addresses the problem of control performance index (CPI) minimal tuning of proportional integral differential (PID) feed-back-controllers with set-point weighting. Common CPIs, such as the integrated absolute error (IAE), are considered as objective functions to be minimised by parameter tuning. Many CPIs are convex functions, if their domain is(More)
This paper addresses the problem of proportional integral (PI) feed-back-controller tuning to minimise control performance indices (CPI). We consider regulator tuning for stable and unstable low order lag and integrator plants with and without delay. Common CPIs such as the integrated absolute error (IAE) are used as objective functions to be minimised by(More)
This paper addresses the problem of quality monitoring and fault detection in nonlinear processes which are working in different operating points. For such processes the statistical model which is obtained from process data is different from one operating point to another, due to nonlinearities and set-point changes. Therefore the classical methods for(More)
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