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LQG Control With Minimum Directed Information: Semidefinite Programming Approach
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DOI：10.1109/TAC.2017.2709618.png)
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摘要
En 中文
We consider a discrete-time linear-quadratic-Gaussian (LQG) control problem, in which Massey's directed information from the observed output of the plant to the control input is minimized, while required control performance is attainable. This problem arises in several different contexts, including joint encoder and controller design for data-rate minimization in networked control systems. We show that the optimal control law is a linear-Gaussian randomized policy. We also identify the state-space realization of the optimal policy, which can be synthesized by an efficient algorithm based on semidefinite programming. Our structural result indicates that the filter-controller separation principle from the LQG control theory and the sensorfilter separation principle from the zero-delay rate-distortion theory for Gauss-Markov sources hold simultaneously in the considered problem. A connection to the data-rate theorem for mean-square stability by Nair and Evans is also established.
Keyword:
Communication networks
control over communications
Kalman filtering
LMIs
stochastic optimal control
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IF:
7
论文数:
1.3W
被引数:
6.7W
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