New Method of Increasing Working Volume of a Certain Type of Hydraulic Accumulator

Ding, Guo Bao; Shi, Zhi Quan; Cui, He; Huang, Yingbo

doi:10.4028/www.scientific.net/amm.670-671.972

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…Van de Ven 23 created a new variable-area piston constant-pressure accumulator, which can keep the accumulator at a constant pressure during the oil output. Ding et al 24 studied the effect of accumulator absorbing pressure pulsation of hydraulic pump, and proposed methods to increase the available capacity of accumulator. Bi et al 25 studied the absorption law of accumulator to system pressure and flow fluctuation by combining the method of simulation and experiment.…”

Section: Optimal Tracking Control Of the Coal Mining Face Fluid Suppl...mentioning

confidence: 99%

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Zeng,

Wang

2023

Sci Rep

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Emulsion pump station is widely used to provide power for full-mechanized coal mining face equipment. With the development of the mining technique of longwall face and the extensive use of large mining height and high working resistance of the hydraulic support, the fluid supply pressure is more unstable and the pressure impact is increasingly intensified. The intelligent control of the emulsion pump station is the key to the development of the stable fluid supply technology at the working face. This paper develops a new on-line adaptive learning technique to improve the response speed of pumping station based on the optimal control algorithm of adaptive dynamic programming (ADP). The state space model of the working face fluid supply system in the process of no-load column lifting of hydraulic support is first established using the flow relationship, and the effectiveness of the proposed control algorithm is then verified by simulation validation. Moreover, combined with a certain fluid supply system of a fully mechanized caving face in Shandong Energy Xinwen Group XinJulong Co., Ltd, a technical scheme of adaptive stable fluid supply is verified in engineering practice. The results indicate that the fluid supply system using the proposed control algorithm has a favorable tracking effect on the ideal trajectory, and the tracking error can converge to near zero. The output pressure of the fluid supply system using the stable fluid supply technology is more stable, and the practical effect is good, which meets the demand of stable fluid supply in the mining face.

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Section: Optimal Tracking Control Of the Coal Mining Face Fluid Suppl...mentioning

confidence: 99%

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Zeng,

Wang

2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Due to the complexity of the hydraulic system itself, researchers have to choose an accumulator with a simpler and lighter structure, responsive and functional to meet the required working pressure and flow rate, etc. Therefore, we have to choose the right accumulator, carry out the optimal capacity matching [18], and study the problems of the hydraulic system on the vehicle performance, etc.…”

Section: Background and Significance 1introductionmentioning

confidence: 99%

Study on the Effect of Hydraulic Energy Storage on the Performance of Electro-Mechanical-Hydraulic Power-Coupled Electric Vehicles

Chen

Zhang

et al. 2022

Electronics

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In order to address the problems of low energy storage capacity and short battery life in electric vehicles, in this paper, a new electromechanical-hydraulic power coupling drive system is proposed, and an electromechanical-hydraulic power coupling electric vehicle is proposed based on this system. The system realizes the mutual conversion between mechanical energy, hydraulic energy, and electric energy through the electromechanical–hydraulic coupler. This paper describes the structural characteristics and working principles of the system and analyzes the different working modes during the driving of the vehicle. We established a mathematical model of the hydraulic accumulator and the hydraulic pump and motor. Based on the vehicle dynamics model, an AME Sim vehicle model was built and the vehicle, and the relevant hydraulic parameters were set in combination with the actual situation. The braking energy recovery and release process was jointly simulated by AME Sim and Simulink. The simulation results show that the hydraulic accumulator size of the accumulator volume can influence the maximum working pressure of the accumulator and the SOC of the vehicle battery, and it is verified that 35 L is the best capacity. This study has an important reference value for matching electromechanical–hydraulic coupling parameters of electric vehicles.

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New Method of Increasing Working Volume of a Certain Type of Hydraulic Accumulator

Cited by 2 publications

References 1 publication

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Study on the Effect of Hydraulic Energy Storage on the Performance of Electro-Mechanical-Hydraulic Power-Coupled Electric Vehicles

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