کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6963072 1452278 2015 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shall we use hardware sensor measurements or soft-sensor estimates? Case study in a full-scale WWTP
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزار
پیش نمایش صفحه اول مقاله
Shall we use hardware sensor measurements or soft-sensor estimates? Case study in a full-scale WWTP
چکیده انگلیسی
An array of data derived soft-sensors for estimating nitrate-nitrogen concentrations in the denitrifying post-filtration unit of a municipal wastewater treatment plant have been designed in our earlier work. The array was designed to back up the existing hardware instrumentation in the process unit. The importance of trustworthy information on nitrate-nitrogen concentrations is emphasized by their employment in control loops enhancing nitrogen removal. In this paper, we propose an automatic system for deciding whether the use of estimates or corresponding hardware measurements is preferable given the current condition in filters. The presented switching system is based on ranking the estimates and the measurements, and a preferability index that combines the assigned ranks. The ranking procedure employs a robust principal component analysis and statistics used as the measures of fit. The switching system was demonstrated to enable the employment of measurements and estimates in a complementary manner in operating the post-filtration unit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Modelling & Software - Volume 72, October 2015, Pages 215-229
نویسندگان
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