| 传统数模转换器的优缺点分析及高性能PWM-DAC的基本设计思想 |
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| 引用本文： | 辛德环. 传统数模转换器的优缺点分析及高性能PWM-DAC的基本设计思想[J]. 机械工程师, 2011, 0(10): 29-33 |
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| 作者姓名： | 辛德环 |
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| 作者单位： | 北京航空航天大学自动化科学与电气工程学院,北京,100191 |
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| 摘 要： | 分析了基于零阶保持器（ZOH）原理的传统数模转换器（DAC）和线性功率放大器的优点和缺点,以及基于脉冲宽度调制（PWM）技术的D类功率放大器在节能方面的优势和性能上的不足。详细分析了数字PWM调制器（PWM-DAC）的基本原理并推导其算法,进行了性能仿真分析计算,证明了用PWM-DAC同时完成数模转换和PWM调制的可行性,结果表明,这种转换性能优良。
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| 关 键 词： | 脉冲宽度调制 PWM PWM波 数模转换器 数字化PWM调制 |
Advantages and Disadvantages of the Traditional DAC and High Performance PWM-DAC's Basic Design |
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| XIN De-huan. Advantages and Disadvantages of the Traditional DAC and High Performance PWM-DAC's Basic Design[J]. Mechanical Engineer, 2011, 0(10): 29-33 |
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| Authors: | XIN De-huan |
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| Affiliation: | XIN De-huan(School of Automation Science and Engineering,Beijing University of Aeronautic and Astronautic,Beijing 100191,China) |
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| Abstract: | The advantages and disadvantages of the traditional DAC(DAC) and linear power amplifiers based on the zero-order hold device(ZOH) principle are analyzed.The energy-saving advantage and performance shortage of class D amplifier technology based on the pulse width modulation(PWM) are pointed out.The basic principles and algorithms of digital PWM modulator(PWM-DAC) is described.And performance simulation analysis is carried out.The results prove that PWM modulation and digital-to-analogue conversion can be sim... |
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| Keywords: | pulse width modulation pulse width modulation waveform DAC digital PWM modulation |
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