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

Xin Wang, Zhongyu Wang (), Lei Xie, Songlin Wang, Zhongshan Wang and Wenxing Ma
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Xin Wang: School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China
Zhongyu Wang: School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China
Lei Xie: Huawei Terminal Co., Ltd., Dongguan 523000, China
Songlin Wang: Guangxi Liu Gong Machinery Co., Ltd., Liuzhou 545007, China
Zhongshan Wang: Jilin Agricultural Machinery Research Institute, Changchun 130062, China
Wenxing Ma: School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China

Energies, 2024, vol. 17, issue 3, 1-23

Abstract: 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.

Keywords: hydrostatic transmission; shift control; loader; fuzzy sliding mode control; variable structure system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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