TY - GEN
T1 - A design approach for feedback-feedforward control systems
AU - Mohammadzaheri, Morteza
AU - Chen, Lei
AU - Behnia-Willison, Fariba
AU - Aryan, Pouria
PY - 2009
Y1 - 2009
N2 - In this paper, a general design approach is proposed to derive the feedforward control law in feedback-feedforward control systems. This design approach is based on the concept of 'Control Equilibrium Point'. In this design approach, the feedback controller generates the transient control command and the feedforward controller generates the steady state one. Using the proposed feedforward controller, for a wide class of process plants, the stability of system is guaranteed if the feedback controller is a gain with an arbitrarily high value. That is, the only limit for the feedback (transient) control command is the actuator's practical limit; however, in this approach, a mathematical model of the system is needed to derive the feedforward control law. In order to remove this drawback, in case of having significant uncertainties, an artificial neural network, independent of mathematical model of the system, is designed to play the role of feedforward (steady state) control law.
AB - In this paper, a general design approach is proposed to derive the feedforward control law in feedback-feedforward control systems. This design approach is based on the concept of 'Control Equilibrium Point'. In this design approach, the feedback controller generates the transient control command and the feedforward controller generates the steady state one. Using the proposed feedforward controller, for a wide class of process plants, the stability of system is guaranteed if the feedback controller is a gain with an arbitrarily high value. That is, the only limit for the feedback (transient) control command is the actuator's practical limit; however, in this approach, a mathematical model of the system is needed to derive the feedforward control law. In order to remove this drawback, in case of having significant uncertainties, an artificial neural network, independent of mathematical model of the system, is designed to play the role of feedforward (steady state) control law.
UR - http://www.scopus.com/inward/record.url?scp=77950452049&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950452049&partnerID=8YFLogxK
U2 - 10.1109/ICCA.2009.5410298
DO - 10.1109/ICCA.2009.5410298
M3 - Conference contribution
AN - SCOPUS:77950452049
SN - 9781424447060
T3 - 2009 IEEE International Conference on Control and Automation, ICCA 2009
SP - 2266
EP - 2271
BT - 2009 IEEE International Conference on Control and Automation, ICCA 2009
T2 - 2009 IEEE International Conference on Control and Automation, ICCA 2009
Y2 - 9 December 2009 through 11 December 2009
ER -