Ride comfort evaluation for a double-drum vibratory roller with semi-active hydraulic cab mount system

Nguyen Tien Duy,Le Xuan Long,Le Van Quynh,Dang Viet Ha,Bui Van Cuong,O Tursunov

doi:10.1051/e3sconf/202130401008

Nguyen Tien Duy, Le Xuan Long + Show 4 more

Open Access

https://doi.org/10.1051/e3sconf/202130401008

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Abstract

The construction machinery market has required increasingly not only on working capacity but also ride comfort quality, therefore it has required increasing toward researchers and manufacturers. The main objective of this paper proposes and evaluates the performance of semi-active hydraulic cab mount system (SHCMs) of a double-drum vibratory roller in the direction of enhancing vehicle ride comfort under different operating conditions. Firstly, a nonlinear dynamic model of passive hydraulic cab mount system (PHCMs) is established to determine its vertical force which is connected with a dynamic model of vehicle - ground surface interaction. And then, a fuzzy logic controller (FLC) is designed to control the value of the damping force of SHCMs. Both the differential equations of motion and FLC are implemented in the MATLAB/Simulink environment. Finally, the ride performance of SHCMs is evaluated under different conditions according to ISO 2631: 1997 (E) standard. The obtained results show that the values of objective functions with SHCMs significantly reduce in comparison with PHCMs under different operating conditions.

Highlights

The earth-moving equipment often operate in harsh environments, sources of vibration are transmitted from the ground deformation, the internal combustion engine as well as the operating mechanism to the cab through cab mount system and driver's seat suspension system
The main idea of this paper is to propose a semi-active hydraulic cab mount system (SHCMs) for a double-drum vibratory roller based on the development of the structure of a passive hydraulic cab mount system (PHCMs) with adjustable hydraulic damping force of hydraulic actuator
The obtained results show that the aws and awcphi values with SHCMs respectively improve by 22.92 % and 23.00% compared to PHCMs at Case 2

Summary

Introduction

The earth-moving equipment often operate in harsh environments, sources of vibration are transmitted from the ground deformation, the internal combustion engine as well as the operating mechanism to the cab through cab mount system and driver's seat suspension system. The hydraulic cab mount system (HCMs) of a drum vibratory roller was proposed to evaluate the ride performance in comparison with two types of the rubber cab mount system (RCMs) and pneumatic cab mount system (PCMs) using a 3-D nonlinear vehicle dynamics model with eleven degrees of freedom [10]. A combination of fuzzy logic controller and PID controller was applied to control the damping coefficient of semi-active cab mount system of vibratory roller using a nonlinear vehicle dynamic model [12]. A fuzzy logic controller (FLC) was designed to control the damping coefficient value of the semi-active hydropneumatic cab mount system of a vibratory roller [13]. An optimal fuzzy-PID control method was designed to control for a semi-active hydraulic cab mount system using a three-dimensional nonlinear dynamic model of vibratory roller[15]. The ride performance of SHCMs is evaluated through the root-mean-square (RMS) of acceleration responses (aws, m/s2 and awcphi, rad/s2) based on ISO 2631: 1997 (E) standard [16] when vehicle operates under survey conditions

Nonlinear dynamic model of hydraulic cab mount

Half-vehicle Dynamic Model

Results and Discussion

Conclusions