气囊式液压蓄能器的数学模型与仿真分析
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摘要
为了提高液体静压导轨系统的动态工作性能,针对其中的气囊式液压蓄能器开展了基础理论研究,通过合理假设和公式推导得到了以气腔体积为输出的蓄能器数学模型,并基于此建立了蓄能器的仿真分析模型,考察了蓄能器在不同的充气压力下对液压回路中的阶跃冲击和脉动冲击的衰减效果,并通过压力衰减实验考察了蓄能器对供油管路中的油液波动的衰减规律。实验结果与仿真结果基本吻合,表明了所建立的气囊式液压蓄能器模型的有效性和实用性。
In order to improve the dynamic performance of the hydrostatic guideway system, the basic theory of hydraulic bladder accumulator in it is studied in the paper. Firstly, the mathematic model of the accumulator is established through reasonable assumption and formula derivation, whose output is the volume of the cavity. And then, the simulation analysis model of the accumulator is set up based on the mathematic model, in which the performance of the accumulator in decreasing the pulsatile impact and absorbing the pressure impact is inspected. Finally, the law of attenuating the fluctuation of the hydraulic oil in the pipelines is inspected by experiment, in which the experiment results shown good agreement with the simulation ones. Therefore, the mathematic model of the hydraulic bladder accumulator built up in the paper is effective and practical.
In order to improve the dynamic performance of the hydrostatic guideway system, the basic theory of hydraulic bladder accumulator in it is studied in the paper. Firstly, the mathematic model of the accumulator is established through reasonable assumption and formula derivation, whose output is the volume of the cavity. And then, the simulation analysis model of the accumulator is set up based on the mathematic model, in which the performance of the accumulator in decreasing the pulsatile impact and absorbing the pressure impact is inspected. Finally, the law of attenuating the fluctuation of the hydraulic oil in the pipelines is inspected by experiment, in which the experiment results shown good agreement with the simulation ones. Therefore, the mathematic model of the hydraulic bladder accumulator built up in the paper is effective and practical.
引文
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3 Bao Jiahan,Cen Yuwan,Ye Xiaohua.Researches on the energy regeneration and vibration reduction performance of a new hydraulic energy regeneration suspension[C].Proceedings of the 6th International Asia Conference on Industrial Engineering and Management Innovation,2016:605~615
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8 Ho T H,Ahn K K.Modeling and simulation of hydrostatic transmission system with energy regeneration using hydraulic accumulator[J].Journal of Mechanical Science and Technology,2010,24(5):1163~1175
9 史同心.带蓄能器差动液压制动系统油缸压力分析[J].机床与液压,2016,44(20):133~135
2 Li Hao,Zhu Yuanhao,Xin Yuhua.Modeling and simulation of a hydro-pneumatic accumulator system for hybrid air development[J].Applied Mechanics and Materials,2015,733(2):763~767
3 Bao Jiahan,Cen Yuwan,Ye Xiaohua.Researches on the energy regeneration and vibration reduction performance of a new hydraulic energy regeneration suspension[C].Proceedings of the 6th International Asia Conference on Industrial Engineering and Management Innovation,2016:605~615
4 孔祥东,权凌霄,姚静,等.基于力学分析的蓄能器数学模型建立及实验研究[J].液压与启动,2006(7):31~34
5 李浪,王海涛,龚烈航.皮囊式蓄能器吸收压力脉动的参数分析与试验[J].液压与气动,2012(7):3~6
6 于淼,石博强.液压制动系统中蓄能器的优化设计与稳健分析[J].农业工程学报,2011,27(6):132~136
7 Wu Xiaoming,Yang Yanfang.Working parameters selection of bladder-type accumulator under the different conditions[J].Applied mechanics and materials,2012:841~844
8 Ho T H,Ahn K K.Modeling and simulation of hydrostatic transmission system with energy regeneration using hydraulic accumulator[J].Journal of Mechanical Science and Technology,2010,24(5):1163~1175
9 史同心.带蓄能器差动液压制动系统油缸压力分析[J].机床与液压,2016,44(20):133~135