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On Iterative System Design and Separation in Control Over Noisy Channels
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- Bao, Lei (author)
- KTH,Kommunikationsteori,ACCESS Linnaeus Centre
-
- Skoglund, Mikael (author)
- KTH,Kommunikationsteori,ACCESS Linnaeus Centre
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- Johansson, Karl Henrik (author)
- KTH,Reglerteknik,ACCESS Linnaeus Centre
- (creator_code:org_t)
- IFAC, 2008
- 2008
- English.
- In: IFAC World Congress, Volume 17, Part 1. - : IFAC.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- We study a closed-loop control system with feedback transmitted over a noisy discrete memoryless channel. We design encoder-controller pairs that jointly optimize the sensor measurement quantization, protection against channel errors, and control. The designgoal is to minimize an expected linear quadratic cost over a finite horizon. As a result of deriving optimality criteria for this problem, we present new results on the validity of theseparation principle subject to certain assumptions. More precisely, we show that the certainty equivalence controller is optimal when the encoder is optimal and has full side-information about the symbols received at the controller. We then use this result to formulate tractable design criteria in the general case. Finally, numerical experiments are carried out to demonstrate the performance obtained by various design methods.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- Control under communication constraints
- Quantized systems
- Stochastic control
Publication and Content Type
- ref (subject category)
- kon (subject category)
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