Ukulawula kwe-hydraulic okubili okuguquguqukayo kanye nokulawula okwakhiwe okuguquguqukayo

Hydrauliese beheer bidireksionele veranderlike en saamgestelde beheer veranderlike

e. I-variable ilawulwa yi-hydraulic cylinder. Isithombe u sikhombisa umqondo wokulawula i-hydraulic bidirectional variable displacement pump eyakhiwe nge-double rod variable displacement cylinder elawulwa yi-directional valve. Lapho i-three position four-way solenoid directional valve 3 isendaweni ephakathi, amagumbi amabili e-variable cylinder axhunywe ne-oil tank. Ngaphansi kokusebenza kwe-return springs ezinhlangothini zombili, i-variable cylinder ibalanced, futhi i-displacement kanye ne-oil suction kanye ne-pressure direction ye-main pump 1 ihlala ingashintshi. Lapho i-valve 3 ishintshwa ibe kwesokunxele noma kwesokudla, i-pressure oil evela kumthombo we-oil control wangaphandle ingena egumbini lesobunxele noma lesokudla le-variable displacement cylinder nge-valves 5 no-3, futhi i-oil ibuyela egumbini elinye, futhi ama-oil suction kanye ne-discharge ports ze-main pump ashintshana ukuze kufezwe i-bidirectional variable displacement. Uma izikhala ezimbili eziphezulu ze-variable piston zilungiswa ngokuqondile, i-stroke ye-variable piston ezindaweni ezinhle nezimbi ingalawulwa, ngakho-ke ukuhamba kwe-pump ezindaweni ezinhle nezimbi kungalungiswa ngasikhathi sinye. Le pump ikakhulukazi isetshenziswa ohlelweni lwe-hydraulic oluvulekile ukuze kushintshwe umgwaqo we-hydraulic cylinder noma i-hydraulic motor.

Simpel hidrolik kontrol kan alleen open-loop kontrol wees, deur 'n verskeidenheid kontrolekleppe en hidroliese sirkels kan 'n geslote-lus kontrol gevorm word, wat 'n verskeidenheid veranderlike verplasing pompes met verskillende funksies vorm.

f. I-diagram ye compound control variable V ibonisa i-pump ye compound control variable ethintwa yi-electro-hydraulic proportional valve (noma i-electro-hydraulic servo valve) futhi yakhiwe ngombono ophumayo we-controlled quantity electric feedback. I-control valve iyinhlangano ye-electro-hydraulic proportional (noma i-servo) yokulawula izikhala ezimbili ezintathu, ethola umjikelezo wokufaka ovela ku-control amplifier. I-voltage yokufaka ye-amplifier inikezwa yi-signal processing unit regulator. I-regulator ingasetha ama-voltage signals wokufaka UX, UQ, up and upq we-variable piston position x, load flow Q, load pressure P kanye ne-pump output power, futhi ingamukela futhi ama-voltage feedback signals ka-X, Q no-P, futhi inezinhloso ezihambisanayo zokucubungula izimpawu. Ngokuvamile, i-PID control unit kanye ne-coefficient correction and compensation unit zibekwe ku-regulator ukuze kuthuthukiswe ukusebenza kokulawula okuphelele kwe-pump.

Ukusebenzisa impendulo kagesi kungasiza ekwenzeni lula indlela yokulungisa okuguquguqukayo yephampu, futhi umgomo wayo wokusebenza ungabangelwa kuphela umphumela wokulawula we-valve yokulawula ekusheshiseni nasekushintsheni kwepiston eguquguqukayo.