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11 - Closed-Loop Control

Published online by Cambridge University Press:  14 December 2018

Jinjun Wang  and
Lihao Feng
Jinjun Wang
Affiliation:
Beijing University of Aeronautics and Astronautics
Lihao Feng
Affiliation:
Beijing University of Aeronautics and Astronautics
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Summary

A closed-loop control system includes fluid system, actuator, sensor, and control algorithm. The control parameters depend on information from the control system which in turn depend on the control. Thus, it could adapt to the flow condition and contribute an intelligent and robust system. The control algorithm could be based on the reduced-order model or the measured signal from the flow field. The reduced-order model is usually achieved by advanced data processing methods, such as POD. On the other hand, measured variables, such as pressure and force coefficients, could also be used for the design of the control algorithm. Some examples of closed-loop control are introduced in detail to show its effect. It is suggested that the realization of closed-loop control is important for engineering applications of active flow control techniques.
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Chapter
Information
Flow Control Techniques and Applications , pp. 266 - 277
Publisher: Cambridge University Press
Print publication year: 2018

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