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Adaptive dual control

Författare

Redaktör

  • Heinz Unbehauen

Summary, in English

The paper discusses the solution to the optimal adaptive control problem over an extended time horizon. This leads to a controller that have dual features, i.e., tt uses control actions as well as probing actions. The solution of the optimal dual control problem is intractable from a computational point of view. Approximations to obtain simpler suboptimal dual controllers are thus important. There are many different approaches how to obtain suboptimal dual controllers. Many of the approximations use a cautious controller as a starting point and introduce different active probing features. This can be done by including a term in the loss function that reflects the quality of the estimates of the parameters of the process. To introduce a dual feature this term must be a function of the control signal that is going to be determined and it should also contain information about the quality of the parameter estimates. The suboptimal dual controllers should also be such that they easily can be used for higher-order systems.

Publiceringsår

2002

Språk

Engelska

Publikation/Tidskrift/Serie

Control Systems, Robotics and Automation, Encyclopedia of Life Support Systems (EOLSS), Developed under the auspices of the UNESCO

Dokumenttyp

Del av eller Kapitel i bok

Förlag

Eolss Publishing CO. Ltd.

Ämne

  • Control Engineering

Nyckelord

  • Bellman equation
  • hyperstate
  • cautious controller
  • turn-off phenomena
  • dynamic programming
  • stochastic control
  • Dual control
  • adaptive control
  • separation principle
  • certainty equivalence principle

Status

Published