Improving the Performance of Asphalt Paver Machine Based on the Experiment Analysis and Control of Excitation Forces

The excitation forces of the tamper pairs in the vibrational screed system not only affect the road density but also affect the road surface quality. Thus, to enhance the performance of the asphalt paver machine, an experimental study of an asphalt paver machine is carried out to evaluate in detail the effect of the excitation frequencies of the tamper pairs and vibrator screed on the density and quality of the road surface. From the actual structure of the vibrational screed system of the asphalt paver machine used in the experiment, its mathematical model is then built to calculate the vibration equations. The fuzzy controller is then applied to control the deflection angles between the tamper pairs to enhance the working performance of the vibrational screed system. The study result shows that both the excitation frequencies of the tamper pairs (f_tp ) and vibrator screed (f_vs ) greatly affect the density and quality of the road surface. To increase the compression density of the road, the excitation of f_tp from 15 to 17 Hz combined with the excitation of f_vs should be applied. Conversely, the excitation of f_tp from 5 to 11 Hz should be used while the excitation of f_vs should be ignored to optimize the quality of the road surface. By controlling the deflection angles in the tamper pairs, the working efficiency of the asphalt paver machine is significantly improved under all different working conditions compared to that without the control.