基于单片机随机频率脉宽调制优化的发展载体序列

基于单片机随机频率脉宽调制优化的发展载体序列(中文3400字,英文2500字,英文PDF)
摘要
基于随机频率脉宽调制(RFPWM)微控制器载体序列的影响是在电压光谱单片机(MCU)上呈现的。为了充分优化载体序列,首先所有可能序列根据使用者和时间扭转的傅里叶变换性能归类为不同团体。其次,为了快速获得个人电脑(PC)终端的最优序列，一些评价指标的建议被提出了出来。最后,这些优化载体序列中只有两个载波频率是推荐的。实验结果也表明,我们应多注意载体序列本身而不是注意载波频率和数量的选择。
Development of optimised carrier sequence in MCU-based random-frequency PWM
Abstract
The effect of the carrier sequences on the voltage spectrum of MCU(microcontroller)-based random-frequency pulse-width modulation (RFPWM) is presented. To optimise the carrier sequence efficiently, first all possible sequences are classified into groups according to the time-shift and time-reverse properties of the Fourier transform. Then, some evaluation indexes are proposed to obtain the optimal sequence quickly with the end of a personal computer (PC). Finally, some optimised carrier sequences with only two carrier frequencies are recommended. The experimental results also indicate that we should pay more attentions to the carrier sequences than to the selection of carrier frequency and on the numbers of carrier frequencies.