Title :
On decentralized estimation and control with application to freeway ramp metering
Author :
Looze, Douglas P. ; Houpt, Paul K. ; Sandell, Nils R., Jr. ; Athans, Michael
Author_Institution :
Massachusetts Institute of Technology, Cambridge, MA, USA
fDate :
4/1/1978 12:00:00 AM
Abstract :
This paper presents an approach to the suboptimal design of time invariant, infinite time horizon, L-Q-G regulator in which decision making and state estimation are decentralized into "local" subsystems. For a prespecified information pattern (set of admissible intercommunications) the problem of finding a best linear control law and state estimator is converted to a parameter optimization which can be solved off line. A modified Davidon-Fletcher-Powell algorithm is used to obtain numerical solutions to the static optimization. A design is illustrated by means of a 12 state freeway corridor ramp metering problem; behavior of centralized and decentralized designs in a nonlinear macroscopic simulation of the freeway are provided.
Keywords :
Decentralized control; Decentralized estimation; Linear systems, stochastic continuous-time; Optimal regulators; Optimal stochastic control; Road-traffic control; Stochastic optimal control; Suboptimal control; Books; Control systems; Filters; Large-scale systems; Optimal control; Power system simulation; Regulators; State estimation; Systems engineering and theory; Traffic control;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.1978.1101706