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Publication

Closed-loop technique using gain balance for fast Brillouin Optical Time-Domain Analysis

Luc Thévenaz, Zhisheng Yang, Li Zhang, Ana Gabriela Correa Mena
2022
Conference Papers

Résumé

A closed-loop servo control based on the gain ratio of two probing frequencies is proposed for fast BOTDA, where the feedback is independent of probe and pump loss, making it robust in harsh environment.

Source officielle

Luc Thévenaz, Zhisheng Yang, Li Zhang, Ana Gabriela Correa Mena
2022
Conference Papers

Résumé

Source officielle

Concepts associés (12)

Closed-loop controller

A closed-loop controller or feedback controller is a control loop which incorporates feedback, in contrast to an open-loop controller or non-feedback controller. A closed-loop controller uses feedback to control states or outputs of a dynamical system. Its name comes from the information path in the system: process inputs (e.g., voltage applied to an electric motor) have an effect on the process outputs (e.g., speed or torque of the motor), which is measured with sensors and processed by the controller; the result (the control signal) is "fed back" as input to the process, closing the loop.

Servomécanisme

La notion de servomécanisme est d'une portée très générale, de l'anthropologie à la neurologie en passant par la philosophie et jusqu'à la robotique. Au plus simple, le servomécanisme est un dispositif, électromécanique ou autre, intercalé entre une commande et des opérateurs pour réaliser la concordance entre une intention et ses réalisations. Ce dispositif est conçu de façon qu'un faible effort suffise pour commander et contrôler un mouvement nécessitant un travail plus important, sans que l'opérateur ait à fournir l'énergie nécessaire.

Motion control

Motion control is a sub-field of automation, encompassing the systems or sub-systems involved in moving parts of machines in a controlled manner. Motion control systems are extensively used in a variety of fields for automation purposes, including precision engineering, micromanufacturing, biotechnology, and nanotechnology. The main components involved typically include a motion controller, an energy amplifier, and one or more prime movers or actuators. Motion control may be open loop or closed loop.

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Publications associées (29)

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Closed-loop technique using gain balance for fast Brillouin Optical Time-Domain Analysis

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