CAJ | 학술논문

为改善减振器自适应能力，提出由空气弹簧、PDC 阀及三筒式液压减振器组成的阻尼可调一体式减振支柱设计方案，该减振支柱阻尼特性与空气弹簧压强相关。介绍减振支柱的结构组成及工作原理并建立阻尼特性数学模型，用 SIMULINK 软件建立该减振支柱阻尼特性仿真模型。仿真结果表明，阻尼力随空气弹簧压强成非线性变化，空载及轻载均利于平顺性提高，重载利于行驶动力性提高，从而实现悬架系统自适应能力提高。通过台架实验测试空气弹簧压强不同时的阻尼特性与仿真结果基本一致，表明该减振支柱数学模型的正确性及结构设计方案的可行性。
위개선감진기자괄응능력，제출유공기탄황、PDC 벌급삼통식액압감진기조성적조니가조일체식감진지주설계방안，해감진지주조니특성여공기탄황압강상관。개소감진지주적결구조성급공작원리병건립조니특성수학모형，용 SIMULINK 연건건립해감진지주조니특성방진모형。방진결과표명，조니력수공기탄황압강성비선성변화，공재급경재균리우평순성제고，중재리우행사동력성제고，종이실현현가계통자괄응능력제고。통과태가실험측시공기탄황압강불동시적조니특성여방진결과기본일치，표명해감진지주수학모형적정학성급결구설계방안적가행성。
Aiming at improving the adaptive ability of shick absorbers,a type of suspension strut consisting of an air spring,a PDC-valve and a three-tube hydraulic shock absorber was designed.The damping characteristic of the strut can be controlled by adjusting the pressure of the air spring.The structure and basic working principle of the suspension strut was introduced.A mathematical model for the damping characteristic of the strut was established.And a model for the simulation of the strut was established by using the software SIMULINK.The simulation results show that the damping characteristic of the strut varies nonlinearly with the pressure of the air spring.The ride comfort of the vehicle is improved under empty load and light load conditions,and the dynamic performance of the vehicle is also improved under heavy load conditions.Thus the adaptive ability is up-graded.The damping characteristic of the strut was tested under different pressure of the air spring on a strut test bench.The test results show a good agreement with the simulation ones.It concludes that the mathematical model of the strut is correct and the design scheme of the strut is feasible.