Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Kurt V. Waller"'
Autor:
Mats F. Sågfors, Kurt V. Waller
Publikováno v:
Journal of Process Control. 8:197-208
In distillation, a reliable model of the column is generally considered as a prerequisite for the design of efficient two-product control by multivariable methods. However, such models are often very hard to obtain. In fact, even very small identific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ab9b2b5045e84630a506e71ecd7d4f1
https://doi.org/10.1016/s0959-1524(97)00037-1
https://doi.org/10.1016/s0959-1524(97)00037-1
Autor:
Mats Friman, Kurt V. Waller
Publikováno v:
Industrial & Engineering Chemistry Research. 36:2662-2671
Tuning of feedback controllers for SISO systems often starts from information about the intersection of the Nyquist curve and the negative real axis. In standard autotuning this point is identified by a relay feedback experiment. For many processes,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a950c4dee0ed5faab6c4d4707f02dcb
https://doi.org/10.1021/ie970013u
https://doi.org/10.1021/ie970013u
Autor:
Mats Friman, Kurt V. Waller
Publikováno v:
Industrial & Engineering Chemistry Research. 34:3052-3058
Closed-loop identification of the ultimate gain (K u ) and critical frequency (ω u ) of a feedback control loop is studied. The accuracy of the Astrom-Hagglund autotuner is discussed, and a simple method of improving the accuracy of the commonly use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e3e92c7cf5b51f09435dc1ed933ddf3
https://doi.org/10.1021/ie00048a016
https://doi.org/10.1021/ie00048a016
Autor:
Kurt V. Waller, Mats F. Sågfors
Publikováno v:
IFAC Proceedings Volumes. 28:327-332
The structure of the directionality in non-ideal (real) distillation is examined. The obtained knowledge of the directionality in distillation may be very useful when the two-point control problem is handled. A compensator structure to utilize this i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbca9c5575e35ddee8c5d7094c9579ad
https://doi.org/10.1016/s1474-6670(17)47058-3
https://doi.org/10.1016/s1474-6670(17)47058-3
Autor:
Kurt V. Waller, Mats F. Saagfors
Publikováno v:
Industrial & Engineering Chemistry Research. 34:2038-2050
The common way to obtain low-order models of distillation columns by identifying the transfer function elements independently may result in models that are inconsistent with the physical reality. The description of the process directionality may be p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c7b18761e2ec854a7e35e035a4e4faa
https://doi.org/10.1021/ie00045a013
https://doi.org/10.1021/ie00045a013
Autor:
Kurt V. Waller, Jonas B. Waller
Publikováno v:
Industrial & Engineering Chemistry Research. 34:1244-1252
The concepts of process directionality and ill-conditionedness are studied. The definition of these concepts commonly used in the literature is shown to be insufficient, due to the wide range of different applications corrected to directionality stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e26e736d198cf5f4c5c83f87c3b81f24
https://doi.org/10.1021/ie00043a028
https://doi.org/10.1021/ie00043a028
Publikováno v:
Industrial & Engineering Chemistry Research. 34:820-827
Advanced control of pH is largely a chemical modeling problem, because the modeling of the process can have a profound effect on the attainable control quality. The literature on pH control shows much confusion and misunderstanding concerning process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daf0a1c0e3d829cf7dc097ec79ce0a88
https://doi.org/10.1021/ie00042a014
https://doi.org/10.1021/ie00042a014
Publikováno v:
AIChE Journal. 41:195-199
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::233b7d07f0695677dac0a63d261cf32b
https://doi.org/10.1002/aic.690410120
https://doi.org/10.1002/aic.690410120
Publikováno v:
Industrial & Engineering Chemistry Research. 42:4575-4577
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b85eca7405b993ea675892f27990fb0
https://doi.org/10.1021/ie020911c
https://doi.org/10.1021/ie020911c
Autor:
Kurt V. Waller, Mats Friman
Publikováno v:
Industrial & Engineering Chemistry Research. 33:1708-1717
Autotuning by relay feedback is studied with emphasis on multiloop PID control of two-input two-output systems. For the purpose of control design many chemical engineering processes can be modeled by integrator-plus-dead-time or gain-plus-dead-time m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e9799fa99809897ad1ced1e653080ab
https://doi.org/10.1021/ie00031a011
https://doi.org/10.1021/ie00031a011