856 KB33 KB199920252017Yu, YueweiZhao, LeileiZhou, Changchengštevilka:2letnik:63str. 129-137ISSN:0039-2480COBISSID_HOST:15302683URN:URN:NBN:SI:doc-3DQGI0DIenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikkakovost vožnjenelinearno vzmetenjesistem sedežastanje cestterenske meritveuglaševanje koeficientovComfort improvement of a novel nonlinear suspension for a seat system based on field measurements|This paper describes improved ride comfort of a novel nonlinear suspension for seat system based on field measurements. For the novel nonlinear suspension proposed, a rubber spring is used as its elastic element which has highly nonlinear characteristics to adapt various working conditions, and an asymmetrical damper is designed to yield asymmetric damping characteristics. Previous seat models were not very suitable for the system; thus, a nonlinear mathematical model was built to describe it better. Then, based on field measurements, the model parameters were identified, and the suspension damping coefficients were tuned under the practical constraints, to achieve satisfactory ride comfort to the greatest extent possible. Finally, the bench test was carried out, and the results show that, after the coefficients tuning, the seat vertical frequency-weighted root mean square (RMS) acceleration values are decreased by about 10 % and 8 % under the driving conditions on the highway and the gravel road, respectively, which proves the damping coefficients tuned are workable. The novel nonlinear suspension and the method of the damping coefficients tuning provide a valuable reference for further improving ride comfort to better protect the driver's healthCilj predstavljene študije je izboljšanje udobja pri vožnji z novim sistemom nelinearnega vzmetenja sedežev na podlagi terenskih meritev. Analiziran je bil nov voznikov sedež, razvit za uporabo v težkih tovornjakih. Vzmetenje je zasnovano kot običajen škarjasti sistem, vanj pa sta vgrajena votla gumijasta vzmet in hidravlični blažilnik. Elementa sta pritrjena na školjko in na ogrodje sedeža med škarjasto konstrukcijo. Gumijasta vzmet deluje kot elastičen element z visokonelinearno karakteristiko, ki omogoča prilagajanje različnim delovnim pogojem, asimetričen blažilnik pa zagotavlja asimetrično karakteristiko dušenja. Obstoječi modeli sedežev niso bili primerni za ta sistem, zato je bil za boljši opis razvit nov nelinearen matematični modelTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo