Young Su Son

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A 5kWh class FESS(Flywheel Energy Storage System) with the operating speed range of 9,000~15,000rpm has been developed. The system consists of a composite flywheel rotor, active magnetic bearings, a motor/generator and its controller. Because Active magnetic bearings(AMB) to support the rotor vibration are open-loop unstable, they needs a feedback(More)
Recently, studies on artificial muscles that are linearly driven like human muscles and move smoothly and flexibly have been attracting attention. In this study, AMSSB (artificial muscle based on SMA spring bundle) driven by hot water and cool water is presented and its performance evaluation results are presented. It showed applicable performance to a(More)
This paper describes a soft composite actuator using a 3D-printed scaffold structure. The actuator consists of a scaffold structure embedded in the center and two wires embedded above and below the scaffold to generate motion. Each component is combined with a soft polymer, so it has the advantage of a soft morphing motion. When the wire is pulled, a(More)
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