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043.pdf
1.
١ COMPUTER BASED TRAINING (CBT) Instrument Training Courses (ITC) اي رﺳﺎﻧﻪ ﭼﻨﺪ
اﻓﺰار ﻧﺮم اﺑﺰاردﻗﻴﻖ 7 - 7 - ﭘﺘﺎﻧﺴﻴﻮﻣﺘﺮﻳﻚ ﺗﺮاﻧﺴﺪﻳﻮﺳﺮﻫﺎي ﭘﺘﺎﻧﺴﻴﻮﻣﺘﺮ ﻳﻚ در واﻗﻊ ﻣﻘﺎوﻣﺖ ﻳﻚ از ﻣﺘﻐﻴﻴﺮ ﻳ و ﻚ ﺑﺎزو ﻛﻪ ﺷﻮﻧﺪه ﺟﺎﺑﺠﺎ ي wiper ،دارد ﻧﺎم ﻳﺎﻓﺘﻪ ﺗﺸﻜﻴﻞ اﻧﺪ . ﻣﻲ ﻣﻘﺎوﻣﺖ اﻳﻦ ﺳﻴﻢ ﻳﻚ ﺻﻮرت ﺑﻪ ﺗﻮاﻧﺪ ﻛﻪ ﭘﻴﭻ wiper روي ﻣﻲ آن ،ﻟﻐﺰد ﺑﺎﺷﺪ . ﺑ ﺎزوي wiper ﺑﻪ ﻓﺸﺎر ﺳﻨﺴﻮر ﻳﺎ ﺑﻮردون Bellows ا ﺷﺪه وﺻﻞ ﺳﺖ . اﻳﺠﺎد ﺳﺒﺐ ﻓﺸﺎر ﺗﻐﻴﻴﺮات ﺟﺎﺑﺠﺎﻳﻲ ﻧﺘﻴﺠﻪ در و ﺳﻨﺴﻮر در ﺟﺎﺑﺠﺎﻳﻲ wiper ﺳﻴﻢ روي آن ﺑﻪ ﻣﺘﺼﻞ ﻣﻲ ﭘﻴﭻ ﺷﻮد . ﺑﺎزو ﭼﻪ ﻫﺮ ﺳﻴﻢ روي را ﺑﻴﺸﺘﺮي ﻓﺎﺻﻠﻪ ﻣﻲ ﻗﺮار ﻣﺪار در آن از ﺑﻴﺸﺘﺮي ﻃﻮل ،ﻧﻤﺎﻳﺪ ﻃﻲ ﭘﻴﭻ ﻣﺪار ﻣﻘﺎوﻣﺖ و ﮔﻴﺮد ﻣﻲ اﻓﺰاﻳﺶ ﻳﺎﺑﺪ . ﭘﻴﻮﺳ ،وﺗﺴﻮن ﭘﻞ ﻳﻚ ﺑﺎ ﻣﻘﺎوﻣﺖ اﻓﺰاﻳﺶ اﻳﻦ اﻧﺪازه ﺘﻪ ﻓﺸﺎر ﺗﻐﻴﻴﺮات و ﺷﺪه ﮔﻴﺮي در ﻧﻤﺎﻳﺶ ﺑﻪ و ﻣﺤﺎﺳﺒﻪ ﻣﻲ آﻳﺪ . روﺷ ﭘﺘﺎﻧﺴﻴﻮﻣﺘﺮﻳﻚ ﻓﺸﺎر ﺳﻨﺴﻮرﻫﺎي ﻲ ﮔﻴﺞ ﻳﻚ از اﻟﻜﺘﺮوﻧﻴﻚ ﺧﺮوﺟﻲ ﻳﻚ آوردن ﺑﺪﺳﺖ ﺑﺮاي ﺳﺎده ﻣﻲ ﻣﻜﺎﻧﻴﻜﻲ ﻓﺸﺎر ﺑﺎﺷ ﻨ ﺪ . ﭘﺘﺎﻧﺴﻴﻮﻣﺘﺮي ﺗﺮﻧﺴﺪﻳﻮﺳﺮﻫﺎي ﻣﻲ ﻛﻪ ﺑﻴﻦ ﻓﺸﺎرﻫﺎي ﺗﻮاﻧﻨﺪ 5 ﺗﺎ psi 10000 ر ا اﻧﺪازه ،ﻧﻤﺎﻳﻨﺪ ﮔﻴﺮي ًﺎﻋﻤﻮﻣ اﻧﺪازه ﺑﺮاي ﮔ ﻴﺮي ﻫﺎﻳ ﻲ ﻛﻪ ﻧﻮﺳﺎن ،ﺑﺎﺷﺪ ﻛﻢ ﻓﺸﺎر ﺗﻐﻴﻴﺮات ﻣﻨﺎﺳﺐ ﻫﺴﺘﻨﺪ ﺗﺮ . اﻧﺤﺮاف و و دﻣﺎ ﺗﺎﺛﻴﺮات ﮔﺮﻓﺘﻦ ﻧﻈﺮ در ﺑﺪون ﺗﺮﻧﺴﺪﻳﻮﺳﺮﻫﺎ اﻳﻦ دﻗﺖ ًﻻﻣﻌﻤﻮ Drift ﺑﻴﻦ 0,5 % ﺗﺎ 1 % ﻣﻲ ﺑﺎﺷﺪ . ﻛﺎﻟﻴﺒﺮاﺳﻴﻮن ﺧﻮردن ﺑﻬﻢ ﺑﺎزوي ﺑﻴﻦ اﺗﺼﺎل wiper و ﻓﺸﺎر ﺳﻨﺴﻮر ﺧﻄﺎ ﺑﻪ ﻣﻨﺠﺮ در اﻧﺪازه ﻧﻮع اﻳﻦ - ﮔﻴﺮ ﺷﺪ ﺧﻮاﻫﺪ ي . اﻧﺪازه در ﺧﻄﺎء اﻳﺠﺎد ﺳﺒﺐ ﻧﻴﺰ دﻣﺎ ﺗﻐﻴﻴﺮات ﻣﻲ ﻓﺸﺎر ﮔﻴﺮي دﻟﻴﻞ ﻫﻤﻴﻦ ﺑﻪ و ﺷﻮد دارد وﺟﻮد دﺳﺘﮕﺎﻫﻬﺎ ﻧﻮع اﻳﻦ در دﻣﺎ ﺗﻐﻴﻴﺮات ﺧﻄﺎي ﺗﺼﺤﻴﺢ ﺑﺮاي ﻣﻜﺎﻧﻴﺴﻤﻲ .
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