Nghiên cứu và ứng dụng phần mềm mô phỏng hệ thống chống trượt quay trên xe ô tô du lịch

ISSN: 2354-0575 NGHIEN c u t ] VA imG DyNG PHAN MEM M PHONG HE THONG CHONG TRlTOT QUAY TREN XE TO DU LICH *'°'""*''' Dong Minh Tuan, Khong Van Nguyen, Le Anh Vii Truong Bai hoc Suphgm Ky thugt Hung Yen T6ni tit: Bdi bdo ndy trinh bdy nhihig kit qud chinh viec nghien cuu qud trinh dieu khien cua he tho chong trugt quay bdnh xe (ASR) Thuc hien mo phong hi thong bang phan mim tir lam ro qud trinh vgt ly xdy he thong Kit qud buae ddu eho thdy, vai mgt so ehi lam vi^e cua he thong chdn trugt quay (ASR) thi mo men dgng eo, dp sudt phanh, truat so vai duong dac tinh thuc te cita he thon Id phu hgp Tit khoa: Hi thong chong truat quay (ASR) Dat van de Tai nan giao thong da tro tham hoa mang tinh toan eau O Viet Nam, van nan cang tram trpng han, theo so lieu thong ke cua uy ban an toan giao thong quoc gia nam 2013, da euop di sinh mang cua 9805 nguai tiic tmng binh moi eo 27 nguai chgt va lam bi thuang, tan tat gin 32253 nguai khac, gay thiet hai hang ty USD ve tai san [5] De giam ti le tai nan giao thong, dong thoi nghien ctju, khai thae su dung co hieu qua, timg buoc di den lam chu cac trang thigt bi cong nghe cao, tim nhiing giai phap tac dpng vao qua trinh digu khien ciia he thong chong trupt quay (ASR) phii hgp vol dieu kien giao thong a Viet Nam la mot yeu eau cap bach Mue tiiu: Nghign cmi qua trinh trugt quay banh xe ctia to va di sau tim hieu ve he thong eh6ng truprt quay tang toe (ASR) Mo phong mot so cac trang thai lam viee cua he thong Phan tich lam ro anh huang eiia he so bam va trugt cua banh xe voi mat duong den qua trinh tang toe cua to xay hien tugng trugt quay Ket qua nghign cuu CO the ap diing de phue vu eong tac dao tao ky su, sii dung lam tai heu tham khao eho giang vien, sinh vien cac truong ky thu?tt Phuang phdp nghien ciru: Su dung phuang phap nghign ciiu ly thuygt ket hgp voi mo phong may tinh nhim nghign cuu ro qui luat dieu khien cua hg thong Bdi tugng nghien euu' nghien cuu qua trinh digu khign va tign hanh mo phong he thdng eh6ng trugt quay ASR tren to du lich Phgm vi nghien cuu: chi nghien euu he th6ng ch6ng tnrgt quay banh xe tren xe to du lich Dong thai tign hanh mo phong nhim lam ro qui luat diSu khien ciia he thong Cff sof \f thuyet * Vai tro ciia he th6ng chfing trugt quay Khoa h9C & Cong nghf - So 4/2014 ASR: Khi tang toe, buam ga dugc mo rgng dan lam tang mo men dpng co truyen xuong cae banh xe chii dpng, tao lye keo Ion han va dan den iam tang dp trugt eiia banh xe chii dpng Neu dp trugt quay Ion hon dp trugt toi uu Xn (Hinh 1), thi he so bam doc (p^ va he so bam ngang (Py giam dan dan den giam kha nang keo va tinh on dinh digu khien Khi kha nang tang toe giam di va kem theo tac dpng xau lam mon lop, tang mat mat nang lugng cua dpng CO [2] De khac phue hien tugng tren, cac xe to hien dai thuang dugc trang bi he thong chong trugt quay cae banh xe chii dpng tang toe (ASR) He thong ASR la mot phan ma rpng eiia he thong chong trugt let banh xe phanh (ABS) He thong chi CO tac dpng dieu Idiien chong trugt a banh xe chii dpng qua trinh tang toe, dam bao cho dp trugt ciia banh xe thay doi vting gia tri toi uu, dg xe CO the phat huy Iyc keo tot nhat, lam tang kha nang tang toe ctia xe *) He so bam cila banh xe vai mat duang: he so bam dgc (p^ vahe so bam ngang gj^ X.X Hinh Dgc tinh truat, the hien su thay dSi he sd bdm (p^ (p^ theo X Hinh the hien anh huang ciia he s6 bam trgn cac mat duong co vat lieu phu bg mat khac Trgn ciing mot loai duong he s6 bam thay doi phu thupc vao trang thai mat duang, nhu duong Journal of Science and Technology 35 ISSN: 2354-0575 tai dpng co, luc mo men dpng co se nam viing mo men thap va giam dan tir duong dac tinh mo men ling vai chS dp tai 100 ve duang dac tinh mo men co gia tri thap hon Neu trugt banh xe ehii dpng nam vung tang toe toi uu, ECU dpng co se digu khien giii o che tai co dinh Khi dp trucft nho han A,,, ECU dpng ca phit tin hieu digu khien tang tai lam mo men dpng ca truyen tai banh xe chii dong tang len giiip xe tiSp tuc tang toe kho sach hay duong not Neu duong kho he so bam ^ ^ = 0,7 - 0,9, duong uot he so bam (p^^ 0,35 0,45 Vai tro cua ASR la giii cac banh xe chii dpng qua trinh tang toe khong bi truat quay va dp trugt thay dSi giai han hep quanh gia trj Au(A= ^ % ) , hieu qua tang t6c cao nhit, tinh on dinh ciia xe la tot nhat *) Hoat dpng eiia he thong ehong trugt quay ASR (Hinh 3) Khi CO hien tugng tnrgt quay tai cac banh xe chij dpng, cam bien toe vong quay true khuyu va cam bien vi tri ban dap ga sg dua tin hieu toi bp dieu khign trung tam (ECU trung tam), dii lieu se dugc phan tich va ECU trung tam se dua tin hieu dieu khign ten bp dieu khien dong co (ECU dpng co) Tit day ECU dpng co se dieu khign dg giam, giii hay tang mo men dpng eo cho phu hgp vai tin hieu bp dieu khien trung tam dua toi Khi can giam mo men tmygn tai banh xe chii dpng, ECU dpng eo phat tin hieu digu khign giam ChiTffng trinh mo phong iTng dung phan mem Matlab - Simulink mo phong cac kh6i tren he thong ASR, tii lien kgt cae khoi de tao mgt he thong hoan chinh *) Cac thong so dau vao: Dg thir nghiem mo hinh mo phong, chiing toi da sir dung so lieu he thong phanh va ket qua thi nghigm de tai thac sy ciia tac gia Lai Nang Vu[l].' Bang Bdng thong so th uc nghiem mo men ung vai cdc che; tdi khdc Che d? tai 10% 30% 35% 40% 75% 85% 100% njv/p) Me (Nm) Me(Nra) Me (Nm) Me (Nm) Me (Nm) Me(Nm) Me(Nm) 1000 30 100 137 168 232 243,5 254,8 1200 40 120 152,7 183 248 259 270 1400 15.7 127,7 159,7 190 255 266 277,3 1600 -25 124 164 195 260 270,5 281,1 1800 -92 60 120 168 232 250,5 262,9 2000 -230 -115 -15 40,9 112,6 165 240,4 2200 -513 -322 -250 -180 -97,2 37 234,7 - — - Momendongccr ~ H ECU Cum van chap hanh ASR Co-cau -^ phanh tai Bdnh xe chu dgng i Tin hieu cam bien dp tri/cft banh xe Cam bien Bdn chu iz Hinh Sa diiu khien 36 Khoa hoc & Cong nghe - So 4/2014 Journal of Science and Technology ISSN: 2354-0575 *) Cac buae tiSn hanh mo phong thuc hien qua cac phucmg an khao sat sau: Phuong an 1: Tang t6c tir mot che dp on dinh Ign mirc tai 100% (ma buam ga 100%) cho den dat dugc v^n toe cho truoe, hg so bam ciia eac banh xe chu dpng la nhu Phuang an 2: Tang t6c dot nggt tu chg dp chay khong tai den miie tai 100%, he so bam ciia cac banh xe ehii dpng la nhu Phuong an 3: Tang toe tu mot chg dp on djnh len miic tai 100% (mo buom ga 100%) cho den dat duoe van toe cho truoe, he so bam ciia banh xe chti dpng ben trai va ben phai khac *) So nguygn ly hoat dpng ciia he thong ASR eo the mo ta nhu (Hinh 3) - So mo phong he thong ASR Tren ca so phan tich dac tinh ky thuat eiia loai xe nghien cuu va nhiing ca sa ly thuyet ve he thong chong trugt quay eua cac banh xe chu dong xe tang t6c, chiing toi da xay dung chuang trinh mo phong tinh chat dpng luc hpc ctia he thong trgn phan mem Matlab-Simutink Sa khoi tinh toan va mo phong the hien trgn (Hinh 4) Hinh So mo phong he thong chong trugt quay (ASR) Ket qua vk thao luan - Kgt qua to dang chay deu a che dp tai 10% tai sau tang toe dot ngpt ten 100% tai, (p^^^^ 0.1 v = 20 km Ih Khoa hyc & Cfing nghe - So 4/2014 Journal of Science and Technology 37 ISSN: 23S4-057S Hinh Bieu dien tru0 eua bdnh xe chu dgng tdi 10% sau tang toe dot nggt len J00% tdi, (p^^ = 0.1.v^lkmlh ^r 100 80 ^ VV 60 tti (0 - 0,5) giay, liic trugt ctia banh xe gin nhu bang Giai doan 2: Sau 0.5 giay, tang dot ngpt len 100% tai dp trugt bign thign nhanh dat gia tri Ion nhat, tai dpng co giam xuong khoang 40%, mo men phanh dat gia tri cue dai khoang 0.1 giay Giai doan 3: su giam nhanh ciia tai dpng CO din tai mo men dpng ca giam, dong thoi mo men phanh co gia tn Ian, ket qua dp trugt banh xe d4n dan on dinh nam giai han dieu khien, chg d$ dugc giir vong (0.6 - 2) giay Giai doan 4: banh xe khong trugt niia, tai dpng eo lai tang len dat gia tri tai ygu eau, m6 men phanh dan giam vg 0, qua trinh dien vong Is - Ket qua mo phong vai vige tang toe dot ng§t tir dSu dat 100% tai, ^ „ , ^ = 0.7, v ^ 20 kmlh 40 20 ILi IIIIML^ Thoi gian (5| Hinh Bieu diin tdi dgng ca tang tdi tir 10% tdi sau tang loc dot nggt len 100% tdi, (p^, = 0.1,v = 10kmlh Hinh Bieu diin dg trugt eua bdnh xe chu dong vai viec tang tdc tir dau dat 100% tdi