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Encoder

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  • 1. ‫ﻣﺎ هﻮ اﻻﻧﻜﻮدر ‪encoder‬‬ ‫اﺧﻰ اﻟﻌﺰﻳﺰ ﻃﺮﻳﻘﺔ اﺧﺘﺒﺎر اﻻﻧﻜﻮدر ﻻﺑﺪ ﻣﻦ ﺗﻮاﻓﺮ ﺟﻬﺎز اﻻﺳﻠﺴﻜﻮب ﻟﺪﻳﻚ وﻣﺼﺪر ﺗﻮﻟﻴﺪ ﺳﺮﻋﺔ ﻣﺜﻞ ﻣﺤﺮك وﺗﻜﻮن هﺬة‬ ‫اﻟﺴﺮﻋﺔ ﻣﺴﺎوﻳﺔ او اﻗﻞ ﻣﻦ ﺳﺮﻋﺔ اﻻﻧﻜﻮﻧﻮدر وﻻ ﺗﻜﻮن اﻋﻠﻰ ﻣﻦ ﺳﺮﻋﺔ اﻻﻧﻜﻮﻧﻮدر ‪rev/min‬‬ ‫اوﻻ اذا ﺻﺪﻓﻚ اﻟﺤﻆ وﻗﻤﺖ ﺑﻔﺘﺢ اﻻﻧﻜﻮدر ﺳﺘﺠﺪ ﻣﺎ ﻳﻠﻰ‬ ‫1ﻗﺮص داﺋﺮى ﻣﻦ اﻟﺰﺟﺎج ﻣﻘﺴﻢ اﻟﻰ ﻣﺠﻤﻮﻋﺔ ﻣﻦ اﻟﺪواﺋﺮ ذات ﺳﻨﺘﺮ واﺣﺪ وﻣﻘﺴﻤﺔ هﺬة اﻟﺪواﺋﺮ ﻃﻮﻟﻴﺎ ﺑﺸﻜﻞ هﻨﺪﺳﻰ‬‫ذو هﺪف ﻣﻌﻴﻦ آﻤﺎ ﺑﺎﻟﺸﻜﻞ‬
  • 2. ‫2ﻋﺪﺳﺔ ﺻﻐﻴﺮة ﻧﺼﻒ ﺣﺠﻢ ﻋﺪﺳﺔ اﻟﺴﻰ دى روم ﻟﺪﻳﻚ‬‫3آﺎرﺗﺔ آﻬﺮﺑﻴﺔ ﺑﻬﺎ ‪ ic‬هﺎم ﺟﺪا وهﺬا ‪ ic‬هﻮ اﻻﺳﺎﺳﻰ ﻓﻰ ﻋﻤﻠﻴﺔ ﻓﻬﻢ ﻋﺪد اﻟﻠﻔﺎت وﺳﻮف اﻗﻮم ﺑﺎﺣﻀﺎر رﻗﻢ ‪ic‬‬‫واﻟﺪﺗﺎ ﺷﻴﺖ‬ ‫‪4- shaft‬وهﻮ اﻟﺠﺰء اﻟﺬى ﻳﺘﻢ ﺗﻮﺻﻴﻠﺔ ﺑﺎﻟﻤﺤﺮك وﻳﺘﻢ ﺗﻮﺻﻴﻠﺔ ﺑﺎﻟﻤﺤﺮك اﻣﺎ ﻋﻦ ﻃﺮﻳﻖ ‪ coupling‬او ﺧﺮﻃﻮم‬ ‫ﻣﻄﺎﻃﻰ ﻟﻜﻦ ﻳﻜﻮن ﻗﺼﻴﺮ ﻓﻘﺪر اﻻﻣﻜﺎن وهﺬا ﻳﻌﺘﻤﺪ ﻋﻠﻰ ﻃﺮﻳﻘﺔ ﺗﺜﺒﻴﺘﺔ ﺑﺎﻟﻤﺤﺮك وﻣﻜﺎن ﺗﺜﺒﻴﺘﺔ.‬
  • 3. ‫ﻓﻜﺮة ﻋﻤﻠﺔ اﻻﻧﻜﻮدر:‬ ‫ﻳﻌﺘﻤﺪ ﻓﻜﺮة ﻋﻤﻠﺔ ﻋﻨﺪﻣﺎ ﻳﺪور اﻟﻤﺤﺮك ﻳﺪور اﻟﺸﺎﻓﺖ اﻟﺨﺎص ﺑﺎﻻﻧﻜﻮدر وﺑﺎﻟﺘﺎﻟﻰ ﻳﺪور اﻟﻘﺮص اﻟﺰﺟﺎﺟﻰ اﻟﻤﻘﺴﻢ اﻟﻰ اﺟﺰاء‬ ‫ﺻﻐﻴﺮ ﻓﺘﻘﻮم اﻟﻌﺪﺳﺔ اﻟﻌﻈﻴﻤﺔ ﺑﺪورهﺎ ﻓﻰ ﻋﺪد ﻋﺪد اﻻﺟﺰاء ﻓﻰ ﺟﺰء ﻣﻦ اﻟﺜﺎﻧﻴﺔ‬ ‫اﻟﻰ ﺑﺪورهﺎ ﺗﻘﻮم ﺑﻨﻘﻞ هﺬا اﻟﻌﺪ اﻟﻰ ‪ ic‬اﻟﺬى ﻳﺤﻮل هﺬة اﻻﺷﺎرة اﻟﻰ ﻣﻮﺟﺎت وهﺬة اﻟﻤﻮﺟﺎت ﻣﻘﺴﻤﺔ اﻟﻰ ارﺑﻊ ﻣﻮﺟﺎت‬ ‫‪A,B,C,D‬‬ ‫واﻟﻨﻔﻰ اﻟﺨﺎص ﺑﻬﻢ‬ ‫‪A' B' C' D' SO‬‬ ‫وآﻞ اﺷﺎرة ﻣﻦ هﺬة اﻻﺷﺎرات ﻟﻬﺎ ﻣﻐﺰهﺎ‬ ‫وهﻨﺎك ﻧﻮﻋﺎن ﻣﻦ اﻻﻧﻜﻮدر هﻤﺎ‬ ‫‪incremental encoder‬‬ ‫‪absluote encoder‬‬ ‫وهﺬة اﻟﺼﻮر‪absolute-encoder‬‬