Addition/Correction pubs.acs.org/IECR
Correction for “Discussion on Time Difference Models and Intervals of Time Difference for Application of Soft Sensors” H. Kaneko and K. Funatsu* Ind. Eng. Chem. Res. 2013, 52, 1322−1334; DOI: 10.1021/ie302582v
T
Figure 5. Relationship between rpred2 and var(ΔyE)/var(Δy) (blue points), and that between rpred,norm2 and var(yE)/var(y) (pink asterisks) using numerical simulation data.23
able 2 in the version of this paper that was published online January 3, 2013 (page 1327) was published without citation regarding the data source. The correct version of the table appears below.
Figure 6. Schematic representation of the depropanizer distillation column selected for dynamic simulation.23
Table 2. Process Variables Measured in the Depropanizer Distillation Column Selected for Dynamic Simulationa symbol A
a
Lastly, the new citation associated with these changes is given below.
objective variable
no.
symbol
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
F1 F2 F3 F4 F5 F6 P1 P2 T1 T2 T3 T4 T5 T6 T7 L1 L2
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mol concentration of bottom n-butane explanatory variables
REFERENCES (23) Kaneko, H.; Funatsu, K. Consideration of soft sensor methods based on time difference and discussion on intervals of time difference (in Jpn.). J. Comput.-Aided Chem. 2012, 13, 29−43.
feed flow bottom flow top flow steam flow flow to reboiler reflux flow pressure 1 pressure 2 feed temperature top temperature bottom temperature steam temperature temperature 1 temperature 2 temperature 3 liquid level 1 liquid level 2
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AUTHOR INFORMATION
Corresponding Author
*E-mail:
[email protected].
Data taken from ref 23.
Also, the captions of Figures 1−6 in the published version of this paper (pages 1325−1327), were incorrect. The corrected captions should appear as shown below: Figure 1. Relationship between the prediction ability of Δy and that of y using numerical simulation data: (a) the plot of rpred,diff2 and rpred2 and (b) the plot of RMSEpred,diff and RMSEpred.23 Figure 2. Relationship between A(1 − rpred,diff2) and 1 − rpred2 using numerical simulation data.23 For A see eq 26. Figure 3. Relationship between autocorrelation coefficient for y and A using numerical simulation data.23 For A see eq 26. Figure 4. Relationships between 1/rpred,diff2 and 1 + 1/ηΔy (blue dots), and 1/rpred,norm2 and 1 + 1/ηy (pink asterisks) using numerical simulation data:23 (a) the whole plot and (b) the plot whose ranges are both from 0.5 to 5. Published: September 26, 2013 © 2013 American Chemical Society
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dx.doi.org/10.1021/ie4030984 | Ind. Eng. Chem. Res. 2013, 52, 14505−14505
