Abstract
To improve the soil compactor ride comfort, a combined control method of Fuzzy and PID control is proposed to control the cab isolation system of soil compactor based on the non-linear vehicle dynamic model. The vibration excitation sources are concerned by the vibrator drum and elastoplastic soil (EPS) interactions in the compression process. The power-spectral-density (PSD) and weighted root-mean-square (RMS) of acceleration responses of both the vertical driver’s seat and pitching cab angle are chosen as the objective functions. The research results show that both the PSD and weighted RMS values of the vertical driver’s seat and pitching cab angle are significantly reduced by using the PID-Fuzzy control under various EPSs in the low-frequency region, especially on the EPS with high-density.
Highlights
The soil compactor performance was evaluated by the compression efficiency of the vibratory drum on the soil, asphalt and other materials and by the driver’s ride comfort [1, 2]
This paper, the ride comfort of the soil compactor is studied based the proportional integral derivate (PID)-Fuzzy control for the soil compactor cab hydraulic mounts
The main conclusions can be given by: The ride comfort of the driver is remarkably improved by the PID-Fuzzy control under various compaction conditions of the soil compactor, especially under a low-frequency region below 4 Hz
Summary
The soil compactor performance was evaluated by the compression efficiency of the vibratory drum on the soil, asphalt and other materials and by the driver’s ride comfort [1, 2]. In order to achieve the maximum excitation force of the vibrator drum, the drum-elastoplastic soil (EPS) interaction models were studied and analyzed [3, 4], the research results showed that the compression performance of the soil compactor was maximum at the excitation frequency region from 15-40 Hz of the vibratory drum [5], especially at a low frequency 28.5 Hz and high frequency 33 Hz of the vibratory drum [1, 3] These vibration excitations transmitted to the driver via the cab isolation system were very high, so the driver’s feel was very uncomfortable. The performance of the cab hydraulic mounts with the PID-Fuzzy control is evaluated via the power-special-density (PSD) and weighted root-mean-square (RMS) of acceleration responses of both the vertical driver’s seat and pitching cab angle under the various compression conditions of the drum-EPS interactions and in the low-frequency region of the soil compactor
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