ON DECENTRALIZED ESTIMATION AND CONTROL WITH APPLICATION TO FREEWAY RAMP METERING

An approch is presented to the sub-optimal design of a time invariant, infinite time horizon, LQG regulator in which decision making and state estimation are decentralized into "local" subsystems. For a pre-specified 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 twelve state freeway corridor ramp metering problem; behavior of centralized and decentralized designs in a nonlinear macroscopic simulation of the freeway are provided.

• Supplemental Notes:
  • Proceedings of the Joint Automotive Control Conference, San Francisco, California, June 22-24, 1977.
• Corporate Authors:

  Institute of Electrical and Electronics Engineers (IEEE)

  3 Park Avenue, 17th Floor
  New York, NY  United States  10016-5997
• Authors:
  • Looze, D P
  • HOUPT, P K
  • Sandell Jr, N R
  • Athans, M
• Conference:
  • Institute of Electrical and Electronics Engrs Proc
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 447-456

Subject/Index Terms

• TRT Terms: Algorithms; Estimating; Freeways; Highway traffic control; Mathematical models; Ramp metering; Ramps (Interchanges); Traffic control; Traffic flow
• Uncontrolled Terms: Models
• Old TRIS Terms: Freeway ramps
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00172493
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: May 3 1978 12:00AM