Model of passive and semi-active vehicle suspension

Želja po bolj udobni, hitri in varni vožnji nas spremlja od pojava prvih vozil. Vzmetenje pri tem igra ključno vlogo. S shranjevanjem energije v elastičnih elementih in disipiranjem energije v dušilnih elementih vzmetenje izolira karoserijo od neravne ceste. V tej zaključni nalogi smo pripravili poenostavljena modela avtomobila s pasivnim in semi-aktivnim vzmetenjem ter ju vzbujali s prevozom izbokline na cestišču. Z variiranjem karakteristik pasivnega vzmetenja smo ugotovili kakšen vpliv imajo te na odziv vzbujenega sistema. Poznavanje teh vplivov nam je omogočilo določitev principa krmiljenja semi-aktivnega vzmetenja z namenom izboljšanja udobja in varnosti vožnje. Ob primerjavi odziva obeh modelov smo ugotovili, da magneto-reološki blažilniki predstavljajo efektivno, nizko cenovno in enostavno krmiljeno rešitev za izboljšanje udobja vožnje za ceno višje obremenitve nevzmetenih delov.Striving for faster, safer vehicles with better ride comfort has begun with the emergence of first vehicles. Here suspension plays a vital part. Trough conservation of energy in elastic elements and dissipation of energy in damping elements vehicle suspension isolates the chassis from road disturbance. Trough manipulation of passive suspensions characteristics we learned how they effect vehicle response to road condition. With knowledge of these effects we determined the principle behind semi-active suspension control. Our goal is better ride comfort and safety. By comparing the responses of passive and semi-active models we concluded that magneto-reological dampers are an effective, low energy and easily controlled solution for better ride comfort and safety