naa a22 4500 510821081 CHVBK 20180411083532.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11814-012-0214-x doi (NATIONALLICENCE)springer-10.1007/s11814-012-0214-x Slow drift modeling and compensation in the glass electrode dynamics for the fast measurement of pH [Elektronische Daten] [Seungjae Lee, Wonhui Cho, Jietae Lee] Glass electrodes for measuring pH in solutions show relatively fast responses with slow drifts. To design compensators to remove the drifts that hinder fast measurements of pH, a dynamic model that consists of ordinary and partial differential equations is proposed. It can explain such two-time scale responses of glass electrodes. The fitting accuracies of the proposed model are experimentally evaluated in frequency-domain and time-domain. The frequency responses obtained from the square wave responses show the fitting abilities of the proposed model, and the step responses also support this. The step responses filtered based on the proposed model show that pH measurements can be made considerably faster. The proposed model can be used to improve the dynamics of glass pH electrodes by compensating dynamic elements causing slow drifts. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Glass Electrode nationallicence pH Sensor nationallicence Slow Sensor Drift nationallicence Identification nationallicence Dynamic Compensation nationallicence Lee Seungjae Department of Biomedical Engineering, Johns Hopkins University, 21264, Baltimore, MD, USA aut Cho Wonhui enGibbs, #A-503 Shin Young Gwell Estates, Bansong-dong, 93-10, 445-160, Hwasung, Gyeonggi, Korea aut Lee Jietae Department of Chemical Engineering, Kyungpook National University, 702-701, Daegu, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1008-1012 0256-1115 30:5<1008 2013 30 11814 https://doi.org/10.1007/s11814-012-0214-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0214-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Seungjae Department of Biomedical Engineering, Johns Hopkins University, 21264, Baltimore, MD, USA aut NATIONALLICENCE 700 1- Cho Wonhui enGibbs, #A-503 Shin Young Gwell Estates, Bansong-dong, 93-10, 445-160, Hwasung, Gyeonggi, Korea aut NATIONALLICENCE 700 1- Lee Jietae Department of Chemical Engineering, Kyungpook National University, 702-701, Daegu, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1008-1012 0256-1115 30:5<1008 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer