Abstract
A 5-DOF active suspension model is established to study the trucks vibration performance, and a fuzzy logic controller has been designed in Matlab/Simulink. The simulation result shows that the control system on the trucks body suspensions can not only reduce the vibration of body but also the vibration level of the drivers seat, which improves the maneuverability and stability of the truck. Considering that the active suspension has complex structure and high cost, it is necessary to find a way to reduce the cost of production. The independent active control on front suspension or rear suspension has been studied and the effectiveness of the different control methods have been compared in detail.
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