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From Data to Dynamical Systems
This article is part of a series commemorating the 50th anniversary of Ed Lorenz's seminal paper 'Deterministic nonperiodic flow'. The system he studied has become the object of extensive mathematical investigations and serves as a paradigm of a low-dimensional chaotic dynamical system.
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Analysis of Synchronization in a Slowly Changing Environment - How Slow Coupling Becomes Fast Weak Coupling
Many physical and biological oscillators are coupled indirectly through a slowly evolving dynamic medium. We present a perturbation method that shows that slow dynamics of a coupling medium is effectively equivalent to weak coupling of oscillators.
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SEAL Pack
The SEAL Pack is versatile, portable, and quickly deployable, similar to the Navy SEALs. SEAL stands for SEa, Air, and Land and the SEAL Pack is versatile enough to traverse all three. The SEAL Pack is transported in a compact way, and can be unpacked into either a car, boat, or quadrotor in a matter of minutes thanks to its modular design.
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Pronking Control
Pronking is a behavior that's be explored in biology, and simulated in robots. In biology, the motivation for the stride is as yet unknown, and better dynamical knowledge of the gait in robots could aide that line of inquiry. This paper provides discussion on stable generation of a pronking gait in a 'templates and anchors' framework, which is a popular idea in biomechanics.
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Passive Walking
When legged robots are required to perform tasks like running, the compliance of the legs becomes important. We have designed and constructed a passive compliant leg for a hexapod robot.