位移—力反饋軸向變量柱塞泵控制特性研究
發(fā)布時間：2018-10-05 15:25
【摘要】：文章以博世力士樂公司生產(chǎn)的A4VSG750-HD型斜盤式柱塞變量泵變量機(jī)構(gòu)為研究對象,通過分析柱塞泵的變量機(jī)構(gòu)內(nèi)部結(jié)構(gòu)與工作原理,建立A4VSG-HD型液壓軸向柱塞泵雙向變量機(jī)構(gòu)的數(shù)學(xué)模型；基于AMESim建立軸向柱塞泵的變量機(jī)構(gòu)模型,分析控制性能與彈簧剛度、預(yù)壓縮量等關(guān)鍵參數(shù)的關(guān)系,并在試驗(yàn)裝置上對仿真模型的正確性進(jìn)行驗(yàn)證。具體研究順序如下： 首先以A4VSG750-HD斜盤式軸向柱塞泵為實(shí)體建立三維模型。通過分析柱塞泵的變量機(jī)構(gòu)的內(nèi)部結(jié)構(gòu)與工作原理,建立A4VSG-HD型液壓軸向柱塞泵雙向變量機(jī)構(gòu)的數(shù)學(xué)模型,得出影響柱塞泵控制特性的決定性因素。在UG三維設(shè)計(jì)軟件建立的斜盤式柱塞泵裝配模型基礎(chǔ)上,聯(lián)合液壓系統(tǒng)仿真軟件AMESim和多體系動力分析仿真軟件ADAMS,通過兩者之間的接口,建立整個柱塞泵的聯(lián)合仿真模型,利用模型之間的數(shù)據(jù)傳遞,建立了斜盤式柱塞泵的機(jī)液一體化模型。 其次在AMESim中,對A4VSG750-HD型軸向柱塞泵的變量機(jī)構(gòu)進(jìn)行仿真,分析變量機(jī)構(gòu)中各個部件對控制特性和動態(tài)特性的影響,并通過四組閥芯中心復(fù)位彈簧驗(yàn)證數(shù)學(xué)模型的正確性。 最后在試驗(yàn)裝置上,對A4VSG750-HD型軸向柱塞泵的變量機(jī)構(gòu)進(jìn)行實(shí)驗(yàn)驗(yàn)證。得到如下結(jié)論： A4VSG-HD型軸向柱塞泵的控制裝置對泵的排量調(diào)節(jié)與先導(dǎo)控制壓力有關(guān),泵的排量與先導(dǎo)控制壓力成比例關(guān)系；伺服閥中心復(fù)位彈簧的參數(shù)和閥芯端面面積,為變量機(jī)構(gòu)控制范圍主要決定因素；系統(tǒng)負(fù)載壓力、伺服閥左右復(fù)位彈簧的剛度以及先導(dǎo)控制壓力對變量機(jī)構(gòu)的動態(tài)特性有比較明顯的影響；本文仿真研究結(jié)果與實(shí)驗(yàn)結(jié)果基本一致,說明本文所建立的變量機(jī)構(gòu)模型是正確的,所得出的結(jié)論也具有普遍性,有利于以后斜盤式變量泵變量機(jī)構(gòu)的設(shè)計(jì)與優(yōu)化。
[Abstract]:This paper takes the variable mechanism of A4VSG750-HD type oblique disc plunger pump produced by Bosch Rexroth Company as the research object, and analyzes the internal structure and working principle of the variable mechanism of piston pump. The mathematical model of bidirectional variable mechanism of A4VSG-HD hydraulic axial piston pump is established, the variable mechanism model of axial piston pump based on AMESim is established, and the relationship between control performance and key parameters, such as spring stiffness, preloading and so on, is analyzed. The correctness of the simulation model is verified on the test device. The research sequence is as follows: firstly, the three-dimensional model of A4VSG750-HD oblique disc axial piston pump is established. By analyzing the internal structure and working principle of variable mechanism of piston pump, the mathematical model of bidirectional variable mechanism of A4VSG-HD type hydraulic axial piston pump is established, and the decisive factors influencing the control characteristic of piston pump are obtained. Based on the assembly model of oblique disc piston pump established by UG 3D design software, the combined hydraulic system simulation software AMESim and the multi-system dynamic analysis simulation software ADAMS, establish the joint simulation model of the whole piston pump through the interface between the two software. Based on the data transfer between the two models, a mechanical and hydraulic integration model of oblique disc piston pump is established. Secondly, in AMESim, the variable mechanism of A4VSG750-HD axial piston pump is simulated, and the influence of each component of variable mechanism on the control characteristic and dynamic characteristic is analyzed, and the correctness of the mathematical model is verified by four groups of valve core center reset spring. Finally, the variable mechanism of A4VSG750-HD axial piston pump is tested on the test device. The conclusions are as follows: the displacement regulation of A4VSG-HD axial piston pump is related to the pilot control pressure, and the displacement of the pump is proportional to the pilot control pressure; The parameters of the servo valve center reset spring and the area of the spool end face are the main determinants of the variable mechanism control range. The stiffness of the left and right reset spring of the servo valve and the pilot control pressure have obvious effects on the dynamic characteristics of the variable mechanism, and the simulation results in this paper are basically consistent with the experimental results, which shows that the model of the variable mechanism established in this paper is correct. The conclusion is also universal, which is beneficial to the design and optimization of variable mechanism of tilted disc pump.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH322
本文編號：2253899
[Abstract]:This paper takes the variable mechanism of A4VSG750-HD type oblique disc plunger pump produced by Bosch Rexroth Company as the research object, and analyzes the internal structure and working principle of the variable mechanism of piston pump. The mathematical model of bidirectional variable mechanism of A4VSG-HD hydraulic axial piston pump is established, the variable mechanism model of axial piston pump based on AMESim is established, and the relationship between control performance and key parameters, such as spring stiffness, preloading and so on, is analyzed. The correctness of the simulation model is verified on the test device. The research sequence is as follows: firstly, the three-dimensional model of A4VSG750-HD oblique disc axial piston pump is established. By analyzing the internal structure and working principle of variable mechanism of piston pump, the mathematical model of bidirectional variable mechanism of A4VSG-HD type hydraulic axial piston pump is established, and the decisive factors influencing the control characteristic of piston pump are obtained. Based on the assembly model of oblique disc piston pump established by UG 3D design software, the combined hydraulic system simulation software AMESim and the multi-system dynamic analysis simulation software ADAMS, establish the joint simulation model of the whole piston pump through the interface between the two software. Based on the data transfer between the two models, a mechanical and hydraulic integration model of oblique disc piston pump is established. Secondly, in AMESim, the variable mechanism of A4VSG750-HD axial piston pump is simulated, and the influence of each component of variable mechanism on the control characteristic and dynamic characteristic is analyzed, and the correctness of the mathematical model is verified by four groups of valve core center reset spring. Finally, the variable mechanism of A4VSG750-HD axial piston pump is tested on the test device. The conclusions are as follows: the displacement regulation of A4VSG-HD axial piston pump is related to the pilot control pressure, and the displacement of the pump is proportional to the pilot control pressure; The parameters of the servo valve center reset spring and the area of the spool end face are the main determinants of the variable mechanism control range. The stiffness of the left and right reset spring of the servo valve and the pilot control pressure have obvious effects on the dynamic characteristics of the variable mechanism, and the simulation results in this paper are basically consistent with the experimental results, which shows that the model of the variable mechanism established in this paper is correct. The conclusion is also universal, which is beneficial to the design and optimization of variable mechanism of tilted disc pump.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH322
【引證文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前2條
1 秦彥凱;電液比例變排量軸向柱塞泵控制特性研究[D];太原理工大學(xué);2012年
2 張君_e;FPSO軟管絞車液壓系統(tǒng)恒功率特性研究[D];大連海事大學(xué);2012年
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