Coordinated Control Systems Design for Fuel Efficiency
Abstract
This basic research study has been concerned with the investigation of coordinated control systems design for improved fuel efficiency. We believe that the coordinated control algorithm developed here would be useful not only in improving fuel efficiency, but also in optimizing the coordination between the various control systems on a given aircraft for improved system performance. This study had two major thrusts. The first one is concerned with the selection of different controller cost functionals such that these performance indices do not conflict with each other. In particular, we have defined the notion of noninteraction for quadratic cost functionals and found necessary and sufficient conditions for interaction between quadratic costs. The second major effort of our study is the formulation of the decentralized control design as a constrained optimal output feedback problem. In this framework, we have developed necessary conditions for existence of an optimal decentralized control law, derived two numerical algorithms for the computation of the optimal decentralized control, and proved the convergence of the decentralized algorithm under suitable conditions. Finally, convergence characteristics of the two algorithms are compared using a tenth order model of a jet aircraft example involving the joint design of flight and engine control subsystems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1984
- Accession Number
- ADA154969
Entities
People
- Alper K. Caglayan
- John R. Broussard
- Nesim Halyo
- Roy E. Lancraft
Organizations
- BBN Technologies