Abstract
A type of pneumatic artificial muscle damping seat used in crawler construction vehicle is introduced. When pneumatic artificial muscle works, nonlinear problem happens. This often makes its working performance become worse. Therefore, a self-tuning fuzzy PID controller is used for pneumatic artificial muscle damping seat to decrease this influence. A simplified three degrees of freedom mathematical model of seat-vehicle body-crawler chassis is established. The vibration damping characteristics of the pneumatic artificial muscle seat are obtained using Matlab/Simulink toolbox. Under four different working conditions of crawler construction vehicle, vertical accelerations and displacements are compared between the new pneumatic artificial muscle damping seat and traditional seat. The simulation results show that the pneumatic artificial muscle seat could get better damping properties. To verify the analytical model, experiments were performed on C and G roads. The simulation results show reasonably good agreements with the experimental data. These research results could provide references for further development of pneumatic artificial muscle-type damping seat.
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