Mokhanni oa servo,e tsejoang hape e le "servo controller" kapa "servo amplifier", ke mofuta oa taolo e sebelisoang ho laola li-motor tsa servo. Mosebetsi oa eona o tšoana le oa converter frequency e sebetsang ho li-motors tse tloaelehileng tsa AC, 'me ke karolo ea sistimi ea servo. Ka kakaretso, li-motor tsa servo li laoloa ka mekhoa e meraro: boemo, lebelo, le torque ho fihlela boemo bo holimo ba sistimi ea phetisetso.
1, Sehlopha sa li-motors tsa servo
E arotsoe ka mekhahlelo e 'meli: DC le AC servo motors, AC servo motors li arotsoe hape ka li-asynchronous servo motors le synchronous servo motors. Hajoale, litsamaiso tsa AC butle-butle li nkela lits'ebetso tsa DC sebaka. Ha ho bapisoa le litsamaiso tsa DC, li-motors tsa AC servo li na le melemo e kang ho ts'epahala haholo, ho tima mocheso hantle, nako e nyane ea inertia, le bokhoni ba ho sebetsa tlasa maemo a matla a motlakase. Ka lebaka la khaello ea li-brushes le lisebelisoa tsa ho tsamaisa, sistimi ea poraefete ea AC le eona e fetohile sistimi ea servo ea brushless. Li-motors tse sebelisoang ho eona ke li-motors tsa brushless cage asynchronous le li-motor synchronous tse sa feleng.
1. Li-motors tsa servo tsa DC li arotsoe ka li-motors tse phunyeletsoeng le tse se nang brush
① Li-motors tsa Brushless li na le theko e tlase, sebopeho se bonolo, torque e kholo ea ho qala, lebelo le pharalletseng la taolo, taolo e bonolo, 'me e hloka tlhokomelo. Leha ho le joalo, li bonolo ho li hlokomela (ho nka sebaka sa borashe ba khabone), li hlahisa tšitiso ea motlakase, 'me li na le litlhoko tsa tikoloho ea ts'ebetso. Hangata li sebelisoa lits'ebetsong tse tloaelehileng tsa indasteri le tsa sechaba tse sa tsotelleng litšenyehelo;
② Li-motors tsa Brushless li na le boholo bo nyane, boima bo bobebe, tlhahiso e kholo, karabelo e potlakileng, lebelo le phahameng, inertia e nyane, torque e tsitsitseng le ho potoloha ho boreleli, taolo e rarahaneng, bohlale, mekhoa e feto-fetohang ea elektronike, e ka ba square wave kapa sine wave commutation, mahala ea tlhokomelo, e sebetsang hantle ebile e boloka matla, mahlaseli a tlase a motlakase, ho phahama ha mocheso o tlase, bophelo bo bolelele ba ts'ebeletso, 'me e loketse libaka tse fapaneng.
2. Litšobotsi tsa mefuta e fapaneng ea li-motors tsa servo
1. Melemo le go tlhoka mesola ea DC servo motors
Melemo: Taolo e nepahetseng ea lebelo, litšobotsi tse matla tsa lebelo la torque, molao-motheo o bonolo oa taolo, tšebeliso e bonolo, le theko e tlase.
Mefokolo: Phetoho ea borashe, moeli oa lebelo, khanyetso e eketsehileng, ho hlahisa likaroloana tsa ho roala (ha li tšoanelehe bakeng sa libaka tse se nang lerōle le tse phatlohang)
2. Melemo le go tlhoka mesola yaLi-motors tsa AC servo
Melemo: Litšobotsi tse ntle tsa ho laola lebelo, taolo e boreleli e ka finyelloa ho pholletsa le lebelo lohle la lebelo, hoo e ka bang ha ho na oscillation, ts'ebetso e phahameng ea ho feta 90%, mocheso o tlaase oa mocheso, taolo ea lebelo le phahameng, taolo ea boemo bo phahameng bo nepahetseng (ho itšetlehile ka ho nepahala ha encoder), e ka finyella torque e sa khaotseng ka har'a sebaka sa ts'ebetso se lekantsoeng, inertia e tlaase, lerata le tlaase, ho se roale borashe, ho lokisoa mahala (e loketseng libaka tse se nang lerōle le tse phatlohang).
Mefokolo: Taolo e rarahane, 'me li-parameter tsa mokhanni li hloka ho lokisoa sebakeng sa marang-rang ho fumana li-parameter tsa PID, tse hlokang wiring e eketsehileng.
Hona joale, li-drive tsa servo tse tloaelehileng li sebelisa li-digital signal processors (DSP) e le setsi sa taolo, se ka finyellang li-algorithms tse rarahaneng tsa taolo, digitization, marang-rang le bohlale. Lisebelisoa tsa motlakase ka kakaretso li sebelisa li-circuits tsa ho khanna tse etselitsoeng li-module tsa matla a bohlale (IPM) joalo ka mantlha. IPM e kopanya lipotoloho tsa ho khanna ka hare 'me e boetse e na le lipotoloho tsa ho lemoha le ho sireletsa liphoso bakeng sa overvoltage, overcurrent, overheating, undervoltage, joalo-joalo. Setsi sa ho khanna motlakase se qala ka ho lokisa motlakase oa mekhahlelo e meraro kapa oa mantlha ka potoloho ea mekhahlelo e meraro e felletseng ea borokho ho fumana matla a tšoanang a DC. Kamora ho lokisoa, matla a mekhahlelo e meraro kapa a mains a sebelisoa ho khanna mochini oa motlakase oa AC servo oa mekhahlelo e meraro ka mehato e meraro sine PWM mohloli oa motlakase bakeng sa phetoho ea maqhubu. Ts'ebetso eohle ea yuniti ea ho khanna matla e ka hlalosoa feela e le ts'ebetso ea AC-DC-AC. Potoloho ea mantlha ea yuniti ea rectifier (AC-DC) ke potoloho ea borokho bo felletseng ba mekhahlelo e meraro e sa laoleheng.
3,Sets'oants'o sa wiring ea sistimi ea servo
1. Wiring ea mokhanni
servo drive haholo-holo e kenyelletsa phepelo ea motlakase oa potoloho, phepelo ea motlakase oa potoloho ea mantlha, phepelo ea motlakase e hlahisoang ke servo, tlhahiso ea taolo ea CN1, sebopeho sa encoder CN2, le CN3 e hokahaneng. Phepelo ea motlakase oa potoloho ke karolo e le 'ngoe ea motlakase oa AC,' me matla a ho kenya e ka ba mohato o le mong kapa oa mekhahlelo e meraro, empa e tlameha ho ba 220V. Sena se bolela hore ha ho sebelisoa karolo ea mekhahlelo e meraro, phepelo ea rona ea mekhahlelo e meraro e tlameha ho hokeloa ka transfoma. Bakeng sa bakhanni ba matla a tlaase, e ka khannoa ka ho toba ka mohato o le mong, 'me mokhoa oa ho hokahanya oa mohato o le mong o tlameha ho hokahanngoa le li-terminals tsa R le S. Hopola hore u se ke ua kopanya lihlahisoa tsa motlakase oa servo U, V, le W ho phepelo ea motlakase ea potoloho, kaha e ka chesa mokhanni. Boema-kepe ba CN1 bo sebelisoa haholo bakeng sa ho hokahanya molaoli oa komporo e kaholimo, ho fana ka tlhahiso, tlhahiso, encoder ABZ phallo ea mekhahlelo e meraro, le tlhahiso ea analog ea matšoao a fapaneng a ho beha leihlo.
2. Khoele ea khoele
Ho tloha setšoantšong se ka holimo, ho ka bonoa hore re sebelisitse 5 feela ho li-terminals tse robong, ho kenyelletsa le terata e le 'ngoe e sireletsang, lithapo tse peli tsa matla, le lipontšo tse peli tsa serial tsa puisano (+-), tse tšoanang le mohala oa encoder ea rona e tloaelehileng.
3. Boema-kepe ba puisano
Mokhanni o hokahantsoe le likhomphutha tse kaholimo tse kang PLC le HMI ka koung ea CN3, 'me o laoloa ka tsela.puisano ea MODBUS. RS232 le RS485 li ka sebelisoa bakeng sa puisano.
Nako ea poso: Dec-15-2023
