本文關(guān)鍵詞：交流正弦液壓泵動(dòng)態(tài)性能設(shè)計(jì)與分析　出處：《華南理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 交流 正弦 柱塞泵 AMESIM 動(dòng)態(tài)性能

【摘要】：為了滿足航空航天和國(guó)防工業(yè)對(duì)大型鍛件日益增長(zhǎng)的需求，大型液壓機(jī)的開(kāi)發(fā)研制已成為國(guó)內(nèi)鍛壓機(jī)械和重機(jī)行業(yè)勢(shì)在必行的攻關(guān)項(xiàng)目和普遍關(guān)注的焦點(diǎn)�？紤]到鍛造操作機(jī)工作在高壓、重載與交變沖擊載荷的工況下，其傳動(dòng)系統(tǒng)與控制系統(tǒng)的設(shè)計(jì)極其關(guān)鍵，通常需要采用正弦泵控液壓系統(tǒng)和機(jī)電液混合驅(qū)動(dòng)的方式來(lái)實(shí)現(xiàn)快速和準(zhǔn)確控制。正弦泵作為一種新型的液壓動(dòng)力元件，在系統(tǒng)中發(fā)揮著能量供給與流量控制的雙重作用，其動(dòng)態(tài)特性的研究對(duì)提高大型液壓機(jī)性能和國(guó)產(chǎn)鍛造設(shè)備的鍛造能力有著重要意義。本研究課題受到了國(guó)家自然科學(xué)基金《交變流體驅(qū)動(dòng)的沖擊機(jī)構(gòu)動(dòng)力學(xué)與控制研究》（編號(hào)：11272122）項(xiàng)目資助。 論文以Wepuko Hydraulic公司的RX系列正弦液壓泵為原型，對(duì)該泵的缸體—柱塞組件等核心部件進(jìn)行了運(yùn)動(dòng)學(xué)與動(dòng)力學(xué)分析。在此基礎(chǔ)上，結(jié)合功率鍵合圖理論對(duì)輸出流量峰值為500L/min的正弦液壓泵進(jìn)行了理論分析與仿真研究。 論文首先詳細(xì)分析了正弦液壓泵的幾何結(jié)構(gòu)與工作原理，根據(jù)正弦液壓泵的幾何結(jié)構(gòu)和內(nèi)部組件的運(yùn)動(dòng)規(guī)律，建立了柱塞—滑靴組件、偏心擺變量機(jī)構(gòu)和轉(zhuǎn)子組件的運(yùn)動(dòng)學(xué)方程并推導(dǎo)了活塞行程、定子偏心量、配流軸開(kāi)口量等參數(shù)隨時(shí)間、控制量輸入變化的函數(shù)關(guān)系式。 在此基礎(chǔ)上，建立了柱塞組件運(yùn)動(dòng)的數(shù)學(xué)模型，，通過(guò)仿真獲取了柱塞位移、速度和加速度、定子偏心量、偏心擺夾角、柱塞—滑靴夾角隨時(shí)間變化的曲線并針對(duì)柱塞運(yùn)動(dòng)過(guò)程中的慣性力、離心力、滑靴靜壓支承力進(jìn)行了分析。 然后結(jié)合功率鍵合圖理論和流體機(jī)械的基本原理，對(duì)正弦泵內(nèi)部的能量流動(dòng)情況進(jìn)行分析，建立內(nèi)部各元件的功率鍵合圖模型及其AMESim仿真模型。通過(guò)仿真分別研究了：偏心擺變量機(jī)構(gòu)控制系統(tǒng)的動(dòng)態(tài)響應(yīng)特性；不同排油口壓力下的柱塞腔流量和壓力波動(dòng)情況；不同柱塞數(shù)目下的正弦液壓泵的流量脈動(dòng)情況；不同控制信號(hào)作用下的正弦液壓泵整體輸出流量以及多泵聯(lián)合時(shí)的流量輸出特性。
[Abstract]:In order to meet the needs of the aerospace and defense industry to the growing demand for large forgings, the development of large hydraulic machine has become the focus of domestic forging machinery and heavy machinery industry imperative research projects and common concern. Considering the forging operation machine in high voltage, heavy load and alternating load condition, the design of the drive system and control the system is extremely critical, usually requires the use of sinusoidal pump controlled hydraulic system and electro-hydraulic hybrid driven way to achieve rapid and accurate control. Sine pump as a hydraulic power component model, energy supply and play a dual role in the traffic control system, the research of its dynamic characteristics is of great significance for improving the forging the ability of performance of large hydraulic machine and domestic forging equipment. The research subject is the impact mechanism driven by alternating fluid of National Natural Science Foundation " Study and Control Research (number: 11272122) project support.
Based on the RX series of sinusoidal hydraulic pump Wepuko Hydraulic company as the prototype, the core components of the pump cylinder and plunger assembly analyzed the kinematics and dynamics. On this basis, combined with the power bond graph theory by theoretical analysis and Simulation Study on peak output flow of sinusoidal pump 500L/min.
Firstly, a detailed analysis of the geometric structure and working principle of sinusoidal pump, according to the law of motion of the geometrical structure and the internal components of the sine of the hydraulic pump, a piston slipper assembly, eccentric pendulum mechanism and kinematics equation of variable rotor assembly and deduced the piston stroke, stator eccentricity, valve shaft opening parameters with time, the function relation between control input changes.
On this basis, establishes the mathematical model of motion of the piston, through the simulation to obtain the piston displacement, velocity and acceleration, stator eccentricity, eccentric pendulum angle of piston slipper angle curves and for the inertial force of the plunger movement in the process of centrifugal force, hydrostatic slipper bearing force are analyzed.
The basic principle and the combination of power bond graph theory and fluid mechanics, analysis of sinusoidal energy flow inside the pump, the establishment of the internal components of the power bond graph model and AMESim simulation model. The simulation control system were studied: the eccentric pendulum variable mechanism dynamic response; piston cavity flow and pressure fluctuation different oil outlet pressure; flow pulsation of sinusoidal pump under the different plunger number; flow output characteristic of overall output sine pump flow under the action of different control signals and pump combination.

【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TH137.51

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