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Interconnection and damping assignment passivity-based control (IDA-PBC) is a technique that regulates the behavior of nonlinear systems assigning a desired (port hamiltonian) structure to the closed-loop. This basic idea, introduced eight years ago, has turned out to be very successful and has provided solutions to a wide variety of physical problems. Although IDA-PBC is originally formulated as...
A novel configuration for a Brillouin distributed fiber sensor based on Brillouin optical time-domain analysis is proposed. This configuration eliminates many intensity noise issues found in previous schemes. Resolution of 7 m all over a 47 km single-mode fiber was achieved and resolution down to 30 cm in a few kilometer fiber. Noise reduction makes possible measurements with a 16 times averaging.
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