TY  - JOUR
KW  - Controllers; Inverse problems; Method of moments; Proportional control systems; Two term control systems
KW  -  Closed loop response; Closed loop transfer function; Controller designs; Controller parameter; Direct synthesis method; Integrated absolute errors; Process parameters; Proportional integral derivative controllers
KW  -  Process control
ID  - scholars4124
IS  - 44
N2  - In the direct synthesis method of controller design, the optimality of the controller parameters are strongly affected by the approximations involved in developing the process models and the choice of desired closed-loop response characteristics. This work (i) captures the process dynamic characteristics through the method of moments; (ii) proposes a tuning parameter λ in the direct synthesis method, which is optimized through the minimization of integrated absolute error (IAE) subject to the constraint on peak sensitivity; and (iii) provides correlations for optimal λ values as a function of process parameters. First-order plus delay time (FOPDT), second-order plus delay time (SOPDT), and second-order with inverse response (SOIR) models are used to characterize the process dynamics and as desired closed-loop transfer functions. The efficacy of the proposed method is illustrated with the help of several types of processes. The proposed controller tuning method performs equally well as compared to other methods for plants approximated with FOPDT models and has been shown to be very effective for SOPDT and SOIR models. © 2014 American Chemical Society.
Y1  - 2014///
VL  - 53
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84910029406&doi=10.1021%2fie501824k&partnerID=40&md5=b425c0d1a6836c3dbf61ad31ac3229df
A1  - Sundaramoorthy, S.
A1  - Ramasamy, M.
JF  - Industrial and Engineering Chemistry Research
AV  - none
SP  - 17403
TI  - Tuning optimal proportional-integral-derivative controllers for desired closed-loop response using the method of moments
N1  - cited By 7
SN  - 08885885
PB  - American Chemical Society
EP  - 17418
ER  -