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題名 | Analysis of PWM Systems Using Orthogonal Functions=使用正交函數於脈波寬度調變系統之分析 |
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作 者 | 謝振輝; | 書刊名 | 建國學報 |
卷期 | 21 2002.07[民91.07] |
頁次 | 頁301-310 |
分類號 | 448.5 |
關鍵詞 | 脈波寬度調變; 連續性正交函數; 片段型正交函數; 契比雪夫多項式; 哈爾小波; PWM; Continuous orthogonal functions; Piecewise orghogonal functions; Shifted-chebyshev polynomial; Haar wavelet; |
語文 | 英文(English) |
中文摘要 | 脈波寬度調變技術廣泛用於通訊、控制及信號處理等領域。但由於脈波寬?調變器的非線性本質,使得脈波寬度調變系統之分析與設計變得不同易。就作者所知,到目前為止只有脈波函數被用於脈波寬度調變系統之分析與設計。在同樣的項數下,使用連續性正交函數,例如雷建得及契比雪夫,所得之結果比使用脈波函數所得結果來的好。另一方面。哈爾小波在解決市制及信園處理的問題上亦展現了良好的性能。因此本研究計劃擬使用契比雪夫及哈爾小波來分析脈波寬度調變系統,使結果在精度及平滑性上得有所改善。並且,將本文所獲得之結果與文獻中使用變良式脈波函數所得結果作一比較。 |
英文摘要 | The pulse-width-modulated techniques have been widely used in communicational, control, signal processing, etc. Due to the inherent nonlinear characteristic of pulse-width modulator, the analysis and design of the PWM systems becomes not easy. To the author's bet knowledge, there has only the block-pulse function been employed to analyze PWN system. It is shown that the continuous orthogonal functions, for example, Legendre and Shifted-Chebyshev, approaches can give better results than the block-pulse functions approaches under the same number of terms. One the other hand, the Haar wavelet has also shown noticeable performance in solving signal processing and control problems. So this paper is to analyze PWM systems by using Shifted-Chebyshev polynomials and Haar wavelet such that the results in precision and smoothness can be improved. And the results obtained in this paper are compared with that obtained by using improved block-pulse (IBP) functions in literature. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。