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The Method for Describing Especial Video Content Automatically
Jiao Liu,Liquan Ma,Song Fan 한국멀티미디어학회 2006 한국멀티미디어학회 국제학술대회 Vol.2006 No.-
During the recent ten years, especial polt identify study is fashion in video searches. Correlative study still locate primal phase. This article presents a sort of method for describing memory polt content automatically through Not adjacent key-frame. This method aims at the characteristic of memory plot and brings forward detection arithmetic for Not adjacent key-frame comparing. The memory polt in the video can be detected effectively.
Modeling and vibration characteristics analysis of a DMF rotor system
Liping Zeng,Jieliang Liu,Zihao Wan,Liquan Song,Xingxing Yuan 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.6
To analyze the vibration response of a rotor system with circumferential short spring dual mass flywheel (DMF) when the primary flywheel speed changes, the interactions (forces and torques) between the primary flywheel, spring seat, spring, and secondary flywheel are analyzed in detail, and the dynamic analysis model of the DMF rotor system is established considering the influence of clearance and friction between parts in the DMF in this study. The vibration response of the DMF is investigated by numerical method. By analyzing the bifurcation diagram, time history, phase trajectories, Poincaré section, and frequency domain of the relative angular displacement, the variation of vibration form of the system under different excitation frequencies are discussed. Besides, the effects of load, primary flywheel speed amplitude, and spring stiffness on system vibration are also analyzed. Finally, some of the results from the analytical study are verified through the DMF rotor system experiments.