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Design of On-line UPS Based on Boost Converter
Chunyang Gu,Zhibing Yang,Chunling Yang,Mengda Yang 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Design and build up a new on-line digital UPS based on boost topological structure with a new kind of single-chip computer, STC12C5412AD, realizing sine wave and square wave output, and shifting among 50Hz, 60 Hz, and 400Hz of the supply for adopting into different industrial standards and applications. Such UPS system contains the module of intelligent charging from storage battery and thorough security functions, characterized by the output of un-interruption and high stability, low distortion, free of interference, low cost and multi-function.
The Frequency Estimation of Weak Signal Based on Chaotic System Fusion Technology
Yanchun Xu,Chunling Yang,Xiaodong Qu,Mengda Yang,Quan Yang 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
in this paper we use fusion technology based on Rossler chaotic oscillator and proportional differential control technology to detect the frequency of the weak signal. The dynamic character of Rossler equation is analyzed and it is immune against the white noise and the interference signal having larger frequency difference with the intrinsicfrequency of chaotic oscillator. And proportional differential control is used to regulate the system to periodic state and the method of spectrum analysis to detect the unknown frequency. The simulation result verified that the presentedmethod is effective and it is very feasible.