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Model Predictive Control oriented experiment design for system identification: A graph theoretical approach
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DOI：10.1016/j.jprocont.2017.02.001.png)
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Abstract
En 中文
We present a new approach to Model Predictive Control (MPC) oriented experiment design for the identification of systems operating in closed-loop. The method considers the design of an experiment by minimizing the experimental cost, subject to probabilistic bounds on the input and output signals due to physical limitations of actuators, and quality constraints on the identified model. The excitation is done by intentionally adding a disturbance to the loop. We then design the external excitation to achieve the minimum experimental effort while we are also taking care of the tracking performance of MPC. The stability of the closed-loop system is guaranteed by employing robust MPC during the experiment. The problem is then defined as an optimization problem. However, the aforementioned constraints result in a non-convex optimization which is relaxed by using results from graph theory. The proposed technique is evaluated through a numerical example showing that it is an attractive alternative for closed-loop experiment design. (C) 2017 Elsevier Ltd. All rights reserved.
Keywords:
Closed-loop identification
Optimal input design
System identification
Model Predictive Control
Constrained systems
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