کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
690101 1460380 2008 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Decentralised control of chromatographic simulated moving bed processes based on wave front reconstruction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Decentralised control of chromatographic simulated moving bed processes based on wave front reconstruction
چکیده انگلیسی

The behaviour of chromatographic simulated moving bed processes is described by the movement of concentration profiles through a circle of separation columns. A closed-loop control manipulates the profiles in order to meet demands concerning specified product purity and disturbance attenuation. If steep wave fronts of the concentration profiles occur, the controlled variables undergo fast changes in case of a transient of the process. In this case, a reconstruction of the wave fronts is necessary for a successful control.A simple and effective decentralised controller structure is proposed based on cascaded discrete-time PI controllers. On-line product purity measurements and the reconstructed wave fronts are used for control purposes. Two kinds of process models are used: a rigorous model for dynamic simulations, and strongly simplified plant models for the design of the wave front reconstruction and the controller. The latter models are identified based on experimental step tests with the reference plant and numerical simulations. The performance of the control system is evaluated by numerical simulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Process Control - Volume 18, Issues 7–8, August–September 2008, Pages 780–796
نویسندگان
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