Icaciswe kanjani i-engeli engu-R yeshubhu yesikwele endinganisweni kazwelonke?

I-engeli engu-R eshubhuni yesikwele iyi-arc yenguquko lapho kuhlangana khona izindiza ezimbili, ngokuvamile okuwuhafu wobubanzi bomugqa omaphakathi we-engeli engu-arc R egobile. Inani le-arc R egobile ngokuvamile liwu-1.5~2.0 izikhathi zobubanzi bepayipi. Ubukhulu be-engeli engu-R bunqunywa ngokuhambisana nobukhulu bodonga lweshubhu yesikwele. I-engeli engu-R ihlukaniswe nge-engeli engu-R yangaphakathi kanye ne-engeli engu-R yangaphandle. I-R yangaphakathi imvamisa izikhathi ezi-1.5 ~ 2 ukujiya kodonga. Amashubhu ensimbi ayisikwele anama-engeli angu-R ahlukene nawo angakhiqizwa ngokuvumelana nezidingo zomsebenzisi.
Isibonelo, ngepayipi lensimbi elingunxande eline-arc R eyindilinga, A=1.0MM, diagonal=1.15MM, ulazi kanjani i-engeli engu-R? Uma kuyipayipi lensimbi eliyisikwele eline-arc, ingabe indlela yokubala iyafana? Unxande unobude obungu-A nobubanzi obungu-B, idayagonali engu-C, futhi irediyasi yamakona amane ama-arcs R iyalingana. Bala usayizi ka-R ngefomula elandelayo: (C/2-R) ^ 2=(A/2-R) ^ 2+(B/2-R) ^ 2 C ^ 2/4-CR+R ^ 2 =A ^ 2/4-AR+R ^ 2+B ^ 2/4-BR+R ^ 2 4R ^ 2-4 (A+BC) R+(A ^ 2+B ^ 2-C ^ 2)=0.
Kufanele kugcizelelwe lapha ukuthi i-angle engu-R yethubhu engezansi engunxande ayibhekiseli ku-arc, kodwa i-angle ephakathi. I-arc ibhekisela engxenyeni eseyingi, futhi i-engeli efakiwe yomugqa phakathi kwamaphethelo amabili e-arc futhi isikhungo i-engeli emaphakathi. Njengoba isiyingi esiyindilinga singu-2 π R futhi i-engeli emaphakathi ehambisanayo ingu-2 π, ubude be-arc obuhambisana ne-engeli emaphakathi yeyunithi bungu-2 π R/2 π=R. Ngakho-ke, ubude be-arc obuhambisana nanoma iyiphi i-engeli emaphakathi a (radian unit)=aR iyatholakala. Izindlela zokulinganisa namathuluzi we-engeli yesikwele yeshubhu R ihlanganisa igeji engu-R kanye neprojektha. Igeji engu-R ingasetshenziselwa amaphuzu awugqinsi, iprojektha yamaphoyinti amahle, kanye ne-CMM ngezidingo eziphezulu.