TY  - JOUR
T1  - Multi-Objective Cascade Control Sytem Design with an Application to Level Control in Liquid Level Process
AU - Kumar, C. Agees AU - Nair, N. Kesavan 
JO  - Research Journal of Applied Sciences
VL  - 8
IS  - 1
SP  - 82
EP  - 88
PY  - 2013
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2013.82.88
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2013.82.88
KW  - Multi-objective controller
KW  -NSPSO
KW  -NSGA-II
KW  -disturbance rejection
KW  -non dominated sorting
KW  -cascade control
AB  - This study proposes a multi-objective cascade control approach 
  to tune the various controllers employed in the cascade control loop. Most of 
  the modern cascade loops require separate tuning of primary and secondary controllers 
  and hence the design task becomes complicated. Non-dominated Sorting Genetic 
  Algorithm (NSGA-II) and Non-dominated Sorting Particle Swarm Optimization algorithm 
  (NSPSO) based multiobjective approaches are employed in the design to fine tune 
  the controller parameters of both primary and secondary loop. Inner loop comprises 
  of flow process and the outer loop comprises of level process. The process considered 
  in this study is highly non-linear with varying time delay and provides a challenging 
  test bed for most of the modern control problems. Experimental results confirm 
  that a multi-objective, paretobased NSPSO search gives a better performance 
  for regulatory process when compared to NSGA-II. Finally, multiobjective optimization 
  using NSPSO for the level process are compared with NSGA-II and the former exhibit 
  good disturbance rejection capability which is a primary factor considered in 
  cascade control.
ER  -