【摘要】：工程機(jī)械跑合試驗(yàn)臺(tái)是對(duì)工程機(jī)械進(jìn)行整車跑合、試驗(yàn)的一種大型設(shè)備。加載系統(tǒng)是試驗(yàn)臺(tái)的核心系統(tǒng)，構(gòu)成試驗(yàn)臺(tái)的主體，它的性能直接影響到工程機(jī)械跑合-試驗(yàn)時(shí)的穩(wěn)定性、快速性和控制精度。二次調(diào)節(jié)靜液傳動(dòng)技術(shù)不但具有效率高、可控性好的特點(diǎn)，而且可以將制動(dòng)的能量轉(zhuǎn)換成電能回饋到電網(wǎng)。本文在滿足工程機(jī)械跑合的穩(wěn)定性、快速性要求的基礎(chǔ)上，將二次調(diào)節(jié)靜液傳動(dòng)技術(shù)應(yīng)用到工程機(jī)械跑合試驗(yàn)臺(tái)加載系統(tǒng)，采用機(jī)理建模的方法分別對(duì)二次調(diào)節(jié)加載子系統(tǒng)及恒壓油源子系統(tǒng)建立數(shù)學(xué)模型，并對(duì)二次調(diào)節(jié)加載系統(tǒng)進(jìn)行仿真研究。 本文以工程機(jī)械跑合試驗(yàn)臺(tái)二次調(diào)節(jié)加載系統(tǒng)為研究對(duì)象，具體完成了以下工作：首先，針對(duì)傳統(tǒng)加載裝置的加載力矩小，能量不能回收等缺陷，研究了二次調(diào)節(jié)靜液傳動(dòng)技術(shù)，分析總結(jié)了二次元件的機(jī)構(gòu)工作原理及二次加載系統(tǒng)的控制方式，，將二次調(diào)節(jié)靜壓技術(shù)應(yīng)用到跑合試驗(yàn)臺(tái)。其次，根據(jù)工程機(jī)械跑合、試驗(yàn)時(shí)的加載要求，擬定出了基于二次調(diào)節(jié)靜壓傳動(dòng)技術(shù)的跑合試驗(yàn)臺(tái)原理圖，并計(jì)算出試驗(yàn)臺(tái)架的結(jié)構(gòu)參數(shù)，為二次調(diào)節(jié)加載系統(tǒng)提供了理論依據(jù)。最后，建立了加載子系統(tǒng)（二次元件、電液伺服閥、變量油缸），恒壓油源子系統(tǒng)（恒壓變量泵、蓄能器）的數(shù)學(xué)模型。應(yīng)用MATLAB軟件分別對(duì)加載子系統(tǒng)，恒壓油源子系統(tǒng)進(jìn)行仿真分析，分析了加載子系統(tǒng)的穩(wěn)定性、安全性及蓄能器對(duì)恒壓系統(tǒng)的影響。 本文通過對(duì)二次調(diào)節(jié)加載系統(tǒng)研究，豐富了二次靜液傳動(dòng)理論的應(yīng)用。建立了二次調(diào)節(jié)加載系統(tǒng)數(shù)學(xué)模型，為加載仿真分析提供了理論支持。仿真結(jié)果表明二次調(diào)節(jié)加載系統(tǒng)具有良好的穩(wěn)定性，快速性及控制精度。節(jié)約了能源，實(shí)現(xiàn)能量回收，達(dá)到節(jié)能環(huán)保的目的。
[Abstract]:The construction machinery running-off test bench is a kind of large equipment for the whole running and testing of the construction machinery. The loading system is the core system of the test-bed, which constitutes the main part of the test-bed. Its performance directly affects the stability, rapidity and control accuracy of the construction machinery running-test. The secondary regulation hydrostatic transmission technology not only has the characteristics of high efficiency and good controllability, but also can convert the braking energy into electric energy to feed back to the power grid. On the basis of meeting the requirements of the stability and rapidity of construction machinery running, this paper applies the technology of secondary regulating hydrostatic transmission to the loading system of the running test bed of construction machinery. The mathematical models of the secondary regulating loading subsystem and the constant pressure oil source subsystem are established by the method of mechanism modeling, and the simulation research on the secondary regulating loading system is carried out. In this paper, the secondary adjusting loading system of construction machinery running-fit test bench is taken as the research object, and the following work has been done: firstly, aiming at the defects of the traditional loading device, such as small loading torque, and the energy can not be recovered, etc. This paper studies the technology of secondary regulating hydrostatic transmission, analyzes and sums up the working principle of the mechanism of the secondary element and the control mode of the secondary loading system, and applies the secondary regulating static pressure technology to the running-in test bed. Secondly, according to the load requirements of construction machinery running and testing, the principle diagram of running test bench based on the technology of secondary regulation static pressure transmission is worked out, and the structural parameters of the test bed are calculated. It provides a theoretical basis for the secondary adjustment loading system. Finally, the mathematical models of loading subsystem (secondary component, electro-hydraulic servo valve, variable cylinder) and constant pressure oil source subsystem (constant pressure variable pump, accumulator) are established. The loading subsystem and the constant pressure oil source subsystem are simulated by MATLAB software, and the stability, security and the influence of accumulator on the constant pressure system are analyzed. In this paper, the application of the secondary hydrostatic transmission theory is enriched by the study of the secondary regulating loading system. The mathematical model of secondary adjusting loading system is established, which provides theoretical support for loading simulation analysis. The simulation results show that the system has good stability, rapidity and control precision. It saves energy, realizes energy recovery and achieves the purpose of energy saving and environmental protection.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH137

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李智;楊士敏;邵建波;;二次調(diào)節(jié)靜液傳動(dòng)技術(shù)在工程機(jī)械多功能試驗(yàn)臺(tái)的應(yīng)用[J];中國工程機(jī)械學(xué)報(bào);2005年02期

2 蔣曉夏,劉慶和;具有能量回收與重新利用功能的二次調(diào)節(jié)傳動(dòng)系統(tǒng)[J];工程機(jī)械;1992年08期

3 姜繼海,徐志進(jìn),劉慶和,王碧泉;二次調(diào)節(jié)靜波驅(qū)動(dòng)轉(zhuǎn)速PID控制及其試驗(yàn)研究[J];工程機(jī)械;1997年11期

4 姜繼海;二次調(diào)節(jié)靜液傳動(dòng)閉環(huán)位置系統(tǒng)和PID控制[J];工程機(jī)械;2000年05期

5 姜繼海，韓永剛，王德海，劉慶和;二次調(diào)節(jié)靜液驅(qū)動(dòng)系統(tǒng)的智能PID控制[J];哈爾濱工業(yè)大學(xué)學(xué)報(bào);1998年01期

6 姜繼海,王德海,韓永剛,吳盛林;二次轉(zhuǎn)速調(diào)節(jié)靜態(tài)神經(jīng)網(wǎng)絡(luò)非線性控制策略研究[J];機(jī)床與液壓;1997年03期

7 張路軍,李繼志,顧心懌,潘偉;蓄能器類型及應(yīng)用綜述[J];機(jī)床與液壓;2001年06期

8 王慧,李洪人,王棟梁;車輛傳動(dòng)橋二次調(diào)節(jié)模擬加載系統(tǒng)的特性分析[J];機(jī)床與液壓;2003年02期

9 韓文,常思勤;對(duì)二次調(diào)節(jié)系統(tǒng)中蓄能器的研究[J];機(jī)床與液壓;2003年05期

10 彭嵩;唐志勇;裘麗華;;仿人智能控制在工程機(jī)械液壓底盤模擬加載試驗(yàn)臺(tái)中的應(yīng)用[J];機(jī)床與液壓;2006年05期

相關(guān)博士學(xué)位論文 前2條

1 戰(zhàn)興群;靜液驅(qū)動(dòng)二次調(diào)節(jié)技術(shù)控制特性的研究[D];哈爾濱工業(yè)大學(xué);1999年

2 何龍;液壓二次調(diào)節(jié)慣性負(fù)載系統(tǒng)控制及節(jié)能特性研究[D];燕山大學(xué);2010年

相關(guān)碩士學(xué)位論文 前2條

1 左雁冰;工程機(jī)械液壓底盤模擬試驗(yàn)臺(tái)解耦控制研究[D];長安大學(xué);2006年

2 劉新偉;饋能型三相PWM整流器的研究[D];浙江大學(xué);2008年

本文編號(hào)：2357386