Investigating the matching characteristic of the full hydraulic braking system of the wheel loader

Liu, Xinhui; Tan, Peng Hui; Zhang, Cui; Chen, Wei; Cao, Bing-wei; Yang, Kuo; Tian, You

doi:10.1007/s40430-022-03452-8

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…Assuming an overall transmission efficiency of 0.85 and accounting for power losses associated with the static hydraulic transmission system, the engine power Pe should not fall below 171 kW. Typically, for loader vehicles, the engine is rated within the range of 1500 to 2000 rpm [22]. In construction vehicles, the hydraulic components' rated pressure for travel (P H ) is typically set at 0.45-to 0.65-times the highest calibration pressure (P m ) and the maximum relief pressure (P L ) is suitable at 0.8P m [23].…”

Section: Work Condition Analysismentioning

confidence: 99%

“…Equation ( 21) indicates that X 2 , X 3 , X 4 , and X 5 have a nonlinear correlation, highlighting the hydrostatic dual-motor circuit as a three-input single-output nonlinear system with inputs of I p , I m1 , and I m2 and an output of u. The state Equation ( 21) simplifies to Equation (22):…”

Section: Mathematical Modelsmentioning

confidence: 99%

“…The following explanations are based on the system's dynamic equations derived in Section 3.1. The first-order differentiation of h x in Equation (22) gives the output as a function of the three inputs as in Equation (23).…”

Section: Mcf-smcmentioning

confidence: 99%

“…The tracking error e is the difference between the ideal vehicle speed u d and the actual vehicle speed u, as shown in Equation (22).…”

Section: Mcf-smcmentioning

confidence: 99%

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Research on the New Hydrostatic Transmission System of Wheel Loaders Based on Fuzzy Sliding Mode Control

Wang,

Xie

et al. 2024

Energies

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To improve the control performance and energy efficiency of the hydrostatic transmission (HST) system of wheel loaders, this study proposes a novel variable structure dual-motor hydrostatic transmission system, accompanied by a multivariable control strategy based on fuzzy sliding mode control. By constructing a simulation model of the transmission system, the performance of the novel transmission system is verified, and the control effects of common control strategies are compared. The simulation results show that the proposed control strategy and system have good matching and can adapt to disturbances actively. Field experiment results show that the proposed solution can achieve smooth automatic shifting of wheel loaders, while effectively adjusting system pressure, flow, and power. Compared with the traditional hydrodynamic torque converter loader transmission system, its transmission efficiency is effectively increased by 30%, and the efficiency is increased by 8% compared with the traditional hydrostatic transmission system This achievement is of great significance for improving the working efficiency of wheel loaders and reducing energy consumption. The future research focus is to further improve the multivariable control strategy, achieve intelligent operation, and improve the efficiency and reliability of the transmission system.

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Section: Work Condition Analysismentioning

confidence: 99%

Section: Mathematical Modelsmentioning

confidence: 99%