Abstract
To control the vibration of the driver’s seat in the vertical direction and the cab shaking angle in the pitching direction, a semi-active seat suspension and cab’s horizontal damper (SSS-HD) are proposed in this study. Based on the soil compactor dynamic model established in Matlab/Simulink software, the damping coefficients us and ux of the SSS-HD are controlled via the PID-fuzzy control. The weighted root-mean-square acceleration responses of the vertical driver’s seat (awzs) and pitching cab angle (awφs) are selected as the evaluation indexes. The SSS-HD is then compared with the semi-active hydraulic mount (SHM) of the cab. The results show that the SSS-HD has a great effect in controlling the vibration of the driver’s driver in the vertical direction and cab shaking in comparison with the SHM of the cab under the same simulation conditions of the vehicle. In particular, the awzs is improved by 27.9 % under the traveling condition and the awφs is also lower 40.2 % under the compacting condition in comparison with the SHM.
Highlights
Under the vibration excitation of the drum/elasto-plastic soil in the compression condition and the deformed terrain with the poor surface roughness in the moving condition of the soil compactor, the driver’s seat vibration in the vertical direction and the cab shaking in the pitching direction were greatly affected [1,2,3,4,5]
The results indicated that the cab shaking and the vertical vibration of the driver’s seat was better than the cab’s hydraulic mount without the control
To control the cab shaking in the pitching direction, an auxiliary damper in the horizontal direction was installed on the cab [3], the result showed that the pitching cab angle ware significantly improved under the low-frequency range
Summary
Under the vibration excitation of the drum/elasto-plastic soil in the compression condition and the deformed terrain with the poor surface roughness in the moving condition of the soil compactor, the driver’s seat vibration in the vertical direction and the cab shaking in the pitching direction were greatly affected [1,2,3,4,5]. The traditional rubber mounts with their high stiffness and low damping coefficients which could only improve the vibration and noise at high-frequency range were mainly used for the cab isolation system of the soil compactor [3, 4, 6, 7] This isolation system was researched and replaced by using the hydraulic mounts [8, 9]. The cab’s vibration response in both the vertical and pitching directions was still very high according to the standard of ISO 2631-1 [10], it was uncomfortable for operators to control the soil compactors on the roadworks To solve this problem, the semi-active hydraulic mounts (SHM) of the cab using the Fuzzy control and optimal PID-Fuzzy control were researched and applied [9, 11, 12]. The SSS-HD is compared with the SHM of the cab to clarify the performance of SSS-HD
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