氣qi動dong閥fa門men定ding位wei器qi是shi控kong製zhi閥fa的de主zhu要yao附fu件jian，按an力li矩ju平ping衡heng原yuan理li工gong作zuo，它ta將jiang閥fa杆gan位wei移yi作zuo為wei輸shu入ru的de反fan饋kui測ce量liang信xin號hao
，以yi控kong製zhi器qi輸shu出chu信xin號hao作zuo為wei設she定ding信xin號hao，進jin行xing比bi較jiao，當dang兩liang者zhe有you偏pian差cha時shi，改gai變bian其qi到dao執zhi行xing機ji構gou的de輸shu出chu信xin號hao，使shi執zhi行xing機ji構gou動dong作zuo
，建jian立li了le閥fa杆gan位wei移yi倍bei與yu控kong製zhi器qi輸shu出chu信xin號hao之zhi間jian的de一yi一yi對dui應ying關guan係xi。因yin此ci，閥fa門men定ding位wei器qi組zu成cheng以yi閥fa杆gan位wei移yi為wei測ce量liang信xin號hao
，以yi控kong製zhi器qi輸shu出chu為wei設she定ding信xin號hao的de反fan饋kui控kong製zhi係xi統tong。該gai控kong製zhi係xi統tong的de操cao縱zong變bian量liang是shi閥fa門men定ding位wei器qi去qu執zhi行xing機ji構gou的de輸shu出chu信xin號hao。

當dang輸shu入ru信xin號hao增zeng大da時shi，力li矩ju馬ma達da產chan生sheng電dian磁ci場chang
，擋dang板ban受shou電dian磁ci場chang力li遠yuan離li噴pen嘴zui。噴pen嘴zui和he擋dang板ban間jian距ju變bian大da，排pai除chu先xian導dao閥fa內nei部bu的de線xian軸zhou上shang方fang氣qi壓ya。受shou其qi影ying響xiang線xian軸zhou向xiang右you邊bian移yi動dong，推tui動dong擋dang住zhu底di座zuo的de閥fa芯xin，氣qi壓ya通tong過guo底di座zuo輸shu入ru到dao執zhi行xing機ji構gou。隨sui著zhe執zhi行xing機ji構gou氣qi室shi內nei部bu壓ya力li增zeng加jia，執zhi行xing機ji構gou推tui杆gan下xia降jiang，通tong過guo反fan饋kui杆gan把ba執zhi行xing機ji構gou推tui杆gan的de位wei移yi變bian化hua傳chuan達da到dao滑hua板ban。這zhe個ge位wei移yi變bian化hua又you傳chuan達da到dao量liang程cheng反fan饋kui杆gan
，拉la動dong量liang程cheng彈dan簧huang。當dang量liang程cheng彈dan簧huang和he力li矩ju馬ma達da的de力li保bao持chi平ping衡heng時shi，擋dang板ban回hui到dao原yuan位wei
，減jian小xiao與yu噴pen嘴zui間jian距ju。隨sui著zhe通tong過guo噴pen嘴zui排pai出chu空kong氣qi量liang的de減jian小xiao，線xian軸zhou上shang方fang氣qi壓ya增zeng加jia。線xian軸zhou回hui到dao原yuan位wei，閥fa芯xin重zhong新xin堵du住zhu底di座zuo
，停ting止zhi氣qi壓ya輸shu入ru到dao執zhi行xing機ji構gou。當dang執zhi行xing機ji構gou的de運yun動dong停ting止zhi時shi，定ding位wei器qi保bao持chi穩wen定ding狀zhuang態tai。

轉載請注明出處：http://6677489.cn/