I-Hydraulic Proportional, ephendula ngokushesha kanye ne-servo valve
Amavalvu ahlukaniswe ngokulingana (PDVs) uhlobo lwemvalvu olungakwazi ukulawula ukuhamba kwe-fluid ngendlela enembile futhi elawulwayo. Avame ukusetshenziswa ezinhlelweni zamandla e-fluid ukulawula ukuhamba kwezinto ezisebenzayo, njengezindandatho ze-hydraulic noma imishini ye-pneumatic.
Ama-PDVs anesipholi esingahanjiswa emuva naphambili ngaphakathi komzimba wemvalvu. Isipholi sixhunywe endaweni yokusebenza, njengezindandatho ze-hydraulic noma imishini ye-pneumatic, futhi uma uphawu lokulawula lufakwa emvalvini, kubangela isipholi ukuthi sihamba ngaphakathi komzimba wemvalvu. Le nhlelo ilawula ukuhamba kwe-fluid ngaphakathi nangaphandle kwendawo yokusebenza, okwenza ukuthi indawo yokusebenza ihambe ngendlela elawulwayo.
Ama-PDVs anikeza izinzuzo eziningi uma kuqhathaniswa nezivalo ezijwayelekile zokuvula/nokuvala. Enye yezinzuzo ezinkulu ukuthi angakwazi ukulawula ukuhamba kwe-fluid ngendlela eqondile futhi eqhubekayo. Lokhu kuvumela ukulawula okunembile kokunyakaza kwe-actuator, okungathuthukisa ukusebenza kwesistimu futhi kwehlise ukusetshenziswa kwamandla. Ama-PDVs aphinde abe nekhono eliphakeme lokuphendula kumasignali okulawula, njengoba angakwazi ukushintsha ngokushesha ukuhamba kwe-fluid ukuze kuhlangabezane nezidingo zesistimu.
Kukhona izinhlobo eziningi zama-PDVs atholakalayo, kuhlanganise nama-PDVs emishini, ama-PDVs kagesi, kanye nama-PDVs e-electro-hydraulic. Ama-PDVs emishini asebenzisa uxhumano lwemishini noma i-cam ukulawula ukuhamba kwe-spool, kanti ama-PDVs kagesi asebenzisa umphathi kagesi ukulawula ukuhamba kwe-spool. Ama-PDVs e-electro-hydraulic ahlanganisa izici zama-PDVs emishini kanye nama-PDVs kagesi ngokusebenzisa umphathi kagesi ukulawula i-actuator ye-hydraulic ethutha i-spool ngaphakathi komzimba we-valve.
Ekuphetheni, ama-valve ahlukaniswe ngokulingana ayingxenye ebalulekile yezinhlelo zamandla amanzi ezidinga ukulawula kahle ukuhamba kwe-actuator. Ahlinzeka ngezinsiza eziningi uma kuqhathaniswa nama-valve ajwayelekile okukhanyisa/okukhanyisa, futhi atholakala ngezinhlobo ezahlukene ukuze ahambisane nezinhlelo ezahlukene.
Ama-valve ahlukaniswe ngokulingana atholakala njengama-valve asebenza ngqo kanye nama-valve asebenza nge-pilot anama-electronics ahlanganisiwe (OBE) noma ngaphandle kwawo. Ngokusebenzisa ama-electronics ahlanganisiwe, anciphisa umzamo wokuxhuma kagesi futhi alula ukuphathwa. Lawa ma-valve afanelekile ezinhlelweni eziningi ezivalwe.
