计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2014年
11期
297-303
,共7页
调制波周期归一化%脉冲宽度调制%调制比%载波比%现场可编程门阵列
調製波週期歸一化%脈遲寬度調製%調製比%載波比%現場可編程門陣列
조제파주기귀일화%맥충관도조제%조제비%재파비%현장가편정문진렬
modulation waveform cycle normalization%Pulse Width Modulation ( PWM )%modulation ratio%carrier wave ratio%Field Programmable Gate Array( FPGA)
研究调制波周期归一化脉冲宽度调制( PWM)，把数字系统中用于记录存储数据Ram的地址Address与PWM脉冲宽度相互映射，给出一般性结论。基于这一模型结构，设计调制波周期归一化PWM的现场可编程门阵列数字系统。针对设计该数字系统时出现的包括模拟量数字化、调制比M、载波比N以及调制波周期归一化PWM各环节具体数字化实现等问题予以分析并解决。对周期脉冲值Pn进行简单设置，便可快速实现调制波周期归一化PWM模型结构的波形输出。
研究調製波週期歸一化脈遲寬度調製( PWM)，把數字繫統中用于記錄存儲數據Ram的地阯Address與PWM脈遲寬度相互映射，給齣一般性結論。基于這一模型結構，設計調製波週期歸一化PWM的現場可編程門陣列數字繫統。針對設計該數字繫統時齣現的包括模擬量數字化、調製比M、載波比N以及調製波週期歸一化PWM各環節具體數字化實現等問題予以分析併解決。對週期脈遲值Pn進行簡單設置，便可快速實現調製波週期歸一化PWM模型結構的波形輸齣。
연구조제파주기귀일화맥충관도조제( PWM)，파수자계통중용우기록존저수거Ram적지지Address여PWM맥충관도상호영사，급출일반성결론。기우저일모형결구，설계조제파주기귀일화PWM적현장가편정문진렬수자계통。침대설계해수자계통시출현적포괄모의량수자화、조제비M、재파비N이급조제파주기귀일화PWM각배절구체수자화실현등문제여이분석병해결。대주기맥충치Pn진행간단설치，편가쾌속실현조제파주기귀일화PWM모형결구적파형수출。
A novel Pulse Width Modulation( PWM) waveform generating method based on modulation waveform cycle normalization is proposed. Mapping between address storing data in digital system and pulse width of PWM waveform is the key essence. According to it,a system based on Field Programmable Gate Array(FPGA) is designed and implemented,and difficulties like analog digitization, modulation ratio M, carrier ratio N and details for modulation waveform cycle normalization digitization are solved. With setting modulation waveform Pn for PWM,a specific PWM waveform based on modulation waveform cycle normalization can be achieved successfully,which shows the effectiveness of the method.
