Abstract
In order to study a new type of air suspension system, the quarter dynamic model of semi-active suspension system is established based on FuzzPID control theory; At the same time, a test bench is established. Through analyzing the data which got in simulation and test, the result show that the performance of air spring parameters has obvious improvement on the acceleration of the vehicle body. Butthe performance on the deflection of the suspension and the dynamic tire load is not the same. By changing the frequency of sinusoidal excitation, the specific performance of ride comfort parameters in different sinusoidal excitation has been studied
Highlights
Air suspension can provide variable stiffness according to different sprung masses and road disturbances
Moheyelde in combined dual air chamber air springs with active and passive suspensions separately. He analyzed the influence of parameters such as chamber pressure and connecting pipe inner diameter on the suspension[3].there is no related research on Shared Chamber Air Suspension(SCAS).SCAS consists of one shared air chamber, connecting pipes and air springs, which was original developed by authors of this paper
This studyinvestigates a novel dynamic model of air suspension(SCAS).FuzzPID controller was utilized with SCAS
Summary
Air suspension can provide variable stiffness according to different sprung masses and road disturbances. L. Zhongxing proposed a horizontally interconnected air suspension structure and analysed the influence of different parameters on vehicle ride comfort. Zhongxing proposed a horizontally interconnected air suspension structure and analysed the influence of different parameters on vehicle ride comfort He indicated that this type of suspension can reduce body damage and increase vehicle usage time[1]; Z. Shehata demonstrated the application of fuzzy logic technique to design a controller for the traditional active vehicle suspension system He improved the suspension system performance by altering the number and arrangement of the rules[5].In this study , considering the superior performance in nonlinear time-varying system, Researchers found FuzzPID controller was a good choice to combine with this new type air suspension
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