Zobrazeno 1 - 10
of 85
pro vyhledávání: '"U. Kortela"'
Autor:
Enso Ikonen, U. Kortela
Publikováno v:
IFAC Proceedings Volumes. 41:7919-7924
Controlled finite Markov chain (CFMC) approach can deal with a large variety of signals and systems with multivariable, non-linear and stochastic nature. In this paper, adaptive control based on multiple models is considered. For a set of candidate p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1678176e58a73e78709584697be5deaf
https://doi.org/10.3182/20080706-5-kr-1001.01338
https://doi.org/10.3182/20080706-5-kr-1001.01338
Publikováno v:
International Journal of Control. 79:866-876
The paper presents a cascade generalized predictive controller. The cascade control task is performed by one predictive controller and the cascade feature is incorporated in a special predictor. Simulation results are presented comparing the performa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecee1199a13bc78dc3b3dfaa3685471a
https://doi.org/10.1080/00207170600678249
https://doi.org/10.1080/00207170600678249
Autor:
U. Kortela, Rami Rantanen
Publikováno v:
IFAC Proceedings Volumes. 39:76-81
Industrial kraft cooking process producing both softwood and hardwood pulp was studied. Residence times of chips in the conventional continuous digester were modelled based on volume fractions of chips. The volume fractions were modelled as a functio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c149507a7e57a5c5020c8a6a352a738
https://doi.org/10.3182/20060830-2-sf-4903.00014
https://doi.org/10.3182/20060830-2-sf-4903.00014
Publikováno v:
IFAC Proceedings Volumes. 38:219-224
In industrial continuous cooking systems, yields are seldom measured online. In this study, profiles for lignin, carbohydrates and total yield are constructed using physical model. The yield profiles are utilized for two kinds of digesters: conventio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27bfd46e1a388d6f4a54e7d60b26797b
https://doi.org/10.3182/20050703-6-cz-1902.01612
https://doi.org/10.3182/20050703-6-cz-1902.01612
Publikováno v:
IFAC Proceedings Volumes. 38:121-126
It is difficult to achieve effective control of time variable and nonlinear plants such a fluidized bed boiler. A method of designing a nonlinear fuzzy controller is presented. However, its early application relied on trial and error in selecting eit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cf4b60fa65d49b4bf657f42bd28c6f9
https://doi.org/10.3182/20050703-6-cz-1902.01749
https://doi.org/10.3182/20050703-6-cz-1902.01749
Publikováno v:
IFAC Proceedings Volumes. 38:495-500
Two industrial continuous cooking processes producing both softwood and hardwood pulp were studied. Real time kappa number profiles of conventional and Downflow Lo-Solids cooking were modelled. Gustafson's kappa number model with optimised parameters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::661ae85b03e35b609be3dad43d431bd9
https://doi.org/10.3182/20050703-6-cz-1902.01656
https://doi.org/10.3182/20050703-6-cz-1902.01656
Publikováno v:
IFAC Proceedings Volumes. 38:483-488
Industrial systems generate a lot of information for operators. Increased measurement information flow might cause difficulties for the process operators to observe the process states and faulty process operation. In this study, measurements and stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e63a539c7088b49c7f22a19532bf7e
https://doi.org/10.3182/20050703-6-cz-1902.01654
https://doi.org/10.3182/20050703-6-cz-1902.01654
Publikováno v:
IFAC Proceedings Volumes. 37:121-125
Fuzzy Logic, which has recently drawn a great deal of attention, possesses conceptually the quality of the simplicity. However, its early application relied on trial and error in selecting either the fuzzy membership functions or the fuzzy rules. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::398b24f1329b902eb12669eb6daff288
https://doi.org/10.1016/s1474-6670(17)30861-3
https://doi.org/10.1016/s1474-6670(17)30861-3
Publikováno v:
IFAC Proceedings Volumes. 37:85-90
In industrial digester control systems Kappa number models are often used. There are publications using both physical and experimental methods. In this study Kappa number is predicted in the top of the digester using both modelling techniques. Physic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56fb94e253194b13ecb27d54d1179fdc
https://doi.org/10.1016/s1474-6670(17)30855-8
https://doi.org/10.1016/s1474-6670(17)30855-8
Publikováno v:
IFAC Proceedings Volumes. 35:19-24
The aim of the research is to control the quality of the pulp and the functional condition of the refiners using statistical process control (SPC) and fuzzy modelling techniques. The on-line measurements and the SPC parameters are combined with the M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::973fd9c2295c31ac8b4c35f838f9629f
https://doi.org/10.3182/20020721-6-es-1901.01556
https://doi.org/10.3182/20020721-6-es-1901.01556