TY - GEN
T1 - Nonlinear PI controller for injection speed
AU - Abu-Ayyad, Ma'moun
AU - Hernandez, Jose Mauricio
AU - Dubay, Rickey
PY - 2008/9/29
Y1 - 2008/9/29
N2 - In this work, a nonlinear Proportional-Integral (NPI) controller is presented for controlling the injection speed of a 150 tonne injection molding machine. The delayed feedback was compensated by using a Smith Predictor which obtains the future state of the output for control. The process gain and time constant vary during closedloop control because of the nonlinear characteristics of the system. The system is approximated as a first order plus dead time model. In this control approach, the NPI parameters are retuned every sampling instant using the nonlinear variables of the process. The control performance of the proposed method is compared to a PI controller with improved results.
AB - In this work, a nonlinear Proportional-Integral (NPI) controller is presented for controlling the injection speed of a 150 tonne injection molding machine. The delayed feedback was compensated by using a Smith Predictor which obtains the future state of the output for control. The process gain and time constant vary during closedloop control because of the nonlinear characteristics of the system. The system is approximated as a first order plus dead time model. In this control approach, the NPI parameters are retuned every sampling instant using the nonlinear variables of the process. The control performance of the proposed method is compared to a PI controller with improved results.
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M3 - Conference contribution
AN - SCOPUS:52349095938
SN - 9781605603209
T3 - Technical Papers, Regional Technical Conference - Society of Plastics Engineers
SP - 2182
EP - 2185
BT - Society of Plastics Engineers - 66th Annual Technical Conference of the Society of Plastics Engineers, Plastics Encounter at ANTEC 2008
T2 - 66th Annual Technical Conference of the Society of Plastics Engineers, Plastics Encounter at ANTEC 2008
Y2 - 4 May 2008 through 8 May 2008
ER -