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This work proposes a topology using a ring oscillator with sub-feedback loops to generate multiple phases. It is composed of an N-stage main ring (arbitrary N larger than 3) and k-stage sub-feedback loops, where k is not the common divisor of N, N output phases can be obtained. With a linear model analysis, it comes to a result that oscillating frequency is related to k, and the phase difference between...
Geldart group A particles were fluidized in a 10 cm i.d.×1.8 m high Plexiglas-made bed with ambient air to determine the hydrodynamic properties in a gas-solid fluidized bed. The effects of static bed heights, position of pressure measuring points, differential and absolute pressure fluctuations on the hydrodynamic behavior of a Geldart group A particles in a gas-solid fluidized bed were investigated...
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