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الکترونیک و رباتیک - PWM 1
 
الکترونیک و رباتیک
سه شنبه 14 آذر 1391
سلام. در این مطلب سعی کردم که پی دبلیو ام را به صورت خیلی ساده و مختصر توضیح بدم. اگر سوالی داشتید، در قسمت نظرات بپرسید.
برای دیدن مطلب به ادامه ی مطلب بروید.
PWM، یک موج است. با این موج می توان کار های مختلفی از جمله کنترل سرعت موتور ها در ربات، کنترل زاویه ی چرخش سروو موتور، رنگ ال ای دی های RGB، تولید موج مربعی در فانکشن ژنراتور، استفاده کرد.
کنترل سرعت موتور:
با PWM می توان درصد روشن بودن به خاموش بودن موتور را معین کرد. یعنی در یک واحد زمانی، موتور چه قدر روشن باشد. فرض کنیم موتور سمت چپ یک ربات تعقیب خط، در یک ثانیه، 700 میلی ثانیه روشن باشد و 300 میلی ثانیه خاموش باشد.(منظور از روشن بودن، چرخیدن موتور است.) موتور سمت راست هم در یک ثانیه، 500 میلی ثانیه روشن باشد و 500 میلی ثانیه خاموش باشد. درنتیجه موتور سمت چپ سریع تر می چرخد. چون مدت زمان بیشتری را روشن هست. 
وقتی موتور سمت چپ سریعتر بچرخد، چرخ های سمت چپ بیشتر جلو می روند. درنتیجه ربات به سمت راست می پیچد.




نوع مطلب : برنامه نویسی، میکروکنترلر های ای وی آر، 
برچسب ها : برنامه نویسی،
لینک های مرتبط :
سه شنبه 2 بهمن 1397 10:07 ب.ظ
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دوشنبه 26 آذر 1397 04:12 ب.ظ
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جمعه 6 مهر 1397 08:44 ق.ظ
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یکشنبه 25 شهریور 1397 10:48 ق.ظ
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