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| Body height control of vehicles with laterally interconnected air suspension system under pavement disturbance |
| 1. School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan 570228, China |
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Abstract Taking the laterally interconnected air suspension as research object, the height adjustment system in accordance with laterally interconnected air suspension was designed, and the mathematic model under pavement disturbance was built. The height adjustment fuzzy control was designed based on the traditional height control target, and the result was verified by the bench test. Because the measured height signal with noise interference under pavement disturbance as the input could disturb system to judge, the air mass corresponding to air spring target height was determined as control objective, and the pervious fuzzy controller input and control rules were modified. The stepwise height strategy was adopted to prevent instability phenomenon during height adjustment process, and the actual control performance was verified by simulation in Matlab／Simulink. The simulation results show that the control strategy can adjust body height quickly under the incentive disturbance while the root mean square of sprung mass acceleration has no deterioration during height adjusting comparing to initial height. The suspension damping performance is retained to well keep the body posture stable.
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Received: 26 May 2016
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2017, Vol. 38 
