Active Disturbance Rejection Control of Temperature for Ultrastable Optical Cavities

作者：Pizzocaro Marco^*; Calonico Davide; Calosso Claudio; Clivati Cecilia; Costanzo Giovanni Antonio; Levi Filippo; Mura Alberto

来源：IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2013, 60(2): 273-280.

DOI：10.1109/TUFFC.2013.2563

This paper describes the application of a novel active disturbance rejection control (ADRC) to the stabilization of the temperature of two ultra-stable Fabry-Perot cavities. The cavities are 10 cm long and entirely made of ultra-low-expansion glass. The control is based on a linear extended state observer that estimates and compensates the disturbance in the system in real time. The resulting control is inherently robust and easy to tune. A digital implementation of ADRC gives a temperature instability of 200 mu K at one day of integration time.

• 出版日期2013-2