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Fluorescence anisotropy of green fluorescent protein (GFP) molecule, immobilized on the surface of quartz substrate as single molecular layer, was measured for application to nano-probing of local environment. GFP has fluorescence without any additional prosthetic group or metal atom. It has protective structure against the outer environment. For use of nano-probe of local environment, fluorescence...
Making power factor and harmonics distortion of power supply better are needed. An interleaved boost converter is used for an active PFC (Power Factor Correction) for reducing ripples. In the PFC boost converter, if a duty ratio, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is a prime reason of difficulty of controlling the PFC boost converter...
In general, a current conduction mode boost converter is used for active PFC (Power Factor Correction). In a PFC boost converter, if a duty cycle, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is the prime reason of difficulty of controlling the interleaved PFC boost converter. In this paper, the robust digital controller using an A2DOF (Approximate...
Improving of power factor and reducing harmonic distortion in electrical instruments are needed. An interleave boost converter is used for an active PFC (Power Factor Correction). In the interleave PFC boost converter, if a duty ratio, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is the prime reason of difficulty of controlling the interleave...
If a pulse frequency, a load resistance of an LLC current-resonant DC-DC converter are changed, the dynamic characteristics is varied greatly, that is, the LLC current-resonant DC-DC converter has non-linear characteristics. In many applications of DC-DC converters, loads cannot be specified in advance, and they will be changed suddenly from no loads to full loads. A DC-DC converter system used a...
A PFC boost converter is a non-linear system whose small perturbation model is changed at each operating point depending on a duty ratio. And when the duty ratio, a load resistance and an input voltage are changed, the small perturbation model is changed greatly. The robust controller for the PFC boost converter is needed to suppress the output voltage change at load sudden change while attaining...
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