分?jǐn)?shù)階濾波器建模與新型超級電容器研究
[Abstract]:Traditional filters, such as Butterworth filters, which are relatively flat in the image-pass band and have relatively good phase and attenuation characteristics, have strong adaptability and are easy to be designed. At the same time, the requirements for the composition of traditional devices are not high. Therefore, it can be applied in most cases, but there are also some problems, such as properties and degrees of freedom. With the further development of fractional order filter in the field of filtering, more and more researchers pay attention to fractional order filter because of its better performance, more degrees of freedom and better stability. The simulation and realization of fractional filter is an important research direction. Based on the traditional filter, the analog circuit realization of fractional order filter is studied in this paper. According to the classification of low-pass, high-pass, band-pass and band-stop for single fractional element and second-order fractional filter, the corresponding circuit implementation forms and simulation results are obtained. The active and passive conditions are analyzed. At the same time, the fractional-order Butterworth filter is deeply studied. Super capacitor is a kind of energy storage element with good development prospect. The establishment of its accurate model is of great significance for further research on the practical application of supercapacitor. In this paper, on the basis of fractional vector matching, the traditional fractional supercapacitor model is further improved, and a new supercapacitor model based on fractional Butterworth low-pass filter is proposed. By using the characteristics of fractional Butterworth low-pass filter and the basic supercapacitor model, the application range and stability and anti-noise property of supercapacitor can be expanded.
【學(xué)位授予單位】:遼寧工程技術(shù)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM53;TN713
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