Hybrid techniques for the digital control of mechanical and optical systems

Fausto Acernese; Fabrizio Barone; Rosario De Rosa; Antonio Eleuteri; Leopoldo Milano; Silvio Pardi; Iolanda Ricciardi; Guido Russo

doi:10.1117/12.537336

26 July 2004 Hybrid techniques for the digital control of mechanical and optical systems

Fausto Acernese, Fabrizio Barone, Rosario De Rosa, Antonio Eleuteri, Leopoldo Milano, Silvio Pardi, Iolanda Ricciardi, Guido Russo

Author Affiliations +

Proceedings Volume 5383, Smart Structures and Materials 2004: Modeling, Signal Processing, and Control; (2004) https://doi.org/10.1117/12.537336
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

One of the main requirements of a digital system for the control of interferometric detectors of gravitational waves is the computing power, that is a direct consequence of the increasing complexity of the digital algorithms necessary for the control signals generation. For this specific task many specialised non standard real-time architectures have been developed, often very expensive and difficult to upgrade. On the other hand, such computing power is generally fully available for off-line applications on standard Pc based systems. Therefore, a possible and obvious solution may be provided by the integration of both the the real-time and off-line architecture resulting in a hybrid control system architecture based on standards available components, trying to get both the advantages of the perfect data synchronization provided by the real-time systems and by the large computing power available on Pc based systems. Such integration may be provided by the implementation of the link between the two different architectures through the standard Ethernet network, whose data transfer speed is largely increasing in these years, using the TCP/IP and UDP protocols. In this paper we describe the architecture of an hybrid Ethernet based real-time control system protoype we implemented in Napoli, discussing its characteristics and performances. Finally we discuss a possible application to the real-time control of a suspended mass of the mode cleaner of the 3m prototype optical interferometer for gravitational wave detection (IDGW-3P) operational in Napoli.

Citation Download Citation

Fausto Acernese, Fabrizio Barone, Rosario De Rosa, Antonio Eleuteri, Leopoldo Milano, Silvio Pardi, Iolanda Ricciardi, and Guido Russo "Hybrid techniques for the digital control of mechanical and optical systems", Proc. SPIE 5383, Smart Structures and Materials 2004: Modeling, Signal Processing, and Control, (26 July 2004); https://doi.org/10.1117/12.537336

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