【摘要】：液壓系統(tǒng)由于輸出功率重量比大、響應(yīng)快、控制精度高、可提供遠(yuǎn)程控制等特點(diǎn),在航空航天、船舶、移動(dòng)車輛、鋼鐵工業(yè)等領(lǐng)域得到了廣泛應(yīng)用。同時(shí),液壓系統(tǒng)與電子控制技術(shù)相融合,極大地推動(dòng)了電液控制系統(tǒng)應(yīng)用的快速增長(zhǎng)。然而,液壓系統(tǒng)是一種以高能耗換取優(yōu)良操控性能的傳動(dòng)方式,其應(yīng)用正日益受到其他傳動(dòng)技術(shù)(如機(jī)械傳動(dòng)、電氣傳動(dòng))的挑戰(zhàn)。故在滿足性能要求的前提下實(shí)現(xiàn)節(jié)能控制已成為液壓領(lǐng)域焦點(diǎn)之一。傳統(tǒng)的閥控液壓系統(tǒng)利用一個(gè)多邊節(jié)流的主控制閥芯同時(shí)控制液壓執(zhí)行器的進(jìn)出口油路,在進(jìn)口節(jié)流調(diào)速的過程中,出口同時(shí)進(jìn)行節(jié)流,造成了多余的出口節(jié)流損失,系統(tǒng)能耗大、效率低。液壓執(zhí)行器進(jìn)、出口獨(dú)立節(jié)流控制技術(shù)在完成節(jié)流調(diào)速控制的同時(shí),還可兼顧壓力控制,因此,可以消除傳統(tǒng)閥控液壓系統(tǒng)中重復(fù)的節(jié)流損失。針對(duì)傳統(tǒng)閥控液壓系統(tǒng)在進(jìn)出口節(jié)流控制中存在的局限性,提出了一種兼顧優(yōu)良控制特性與低能耗的進(jìn)出口獨(dú)立控制系統(tǒng)解決方案,并對(duì)其中的進(jìn)出口閥口開啟特性、壓差補(bǔ)償特性、運(yùn)動(dòng)控制特性等關(guān)鍵問題進(jìn)行深入研究�；趥鹘y(tǒng)四通閥控液壓系統(tǒng)的閥口開啟路徑方式,提出了七種典型的進(jìn)出口獨(dú)立控制系統(tǒng)閥口開啟路徑方式,并對(duì)其靜態(tài)特性進(jìn)行了分析。利用狀態(tài)空間方程,建立了進(jìn)出口獨(dú)立控制系統(tǒng)的動(dòng)態(tài)特性仿真模型,并進(jìn)行了動(dòng)態(tài)特性分析,得出了進(jìn)出口獨(dú)立控制系統(tǒng)最優(yōu)的閥口開啟路徑方式�；谪�(fù)載敏感系統(tǒng)的機(jī)液壓差補(bǔ)償原理,針對(duì)進(jìn)出口獨(dú)立控制系統(tǒng)的進(jìn)出口開口度獨(dú)立調(diào)節(jié)特性,得出了進(jìn)口壓差補(bǔ)償方式和出口壓差補(bǔ)償方式�；诒迷磯毫Φ挠�(jì)算公式,得出了進(jìn)口壓差補(bǔ)償系統(tǒng)和出口壓差補(bǔ)償系統(tǒng)最優(yōu)的閥口開啟路徑方式。并進(jìn)行了靜態(tài)特性分析,得出了最優(yōu)的壓差補(bǔ)償方式。基于閥前補(bǔ)償和閥后補(bǔ)償原理,建立了原負(fù)載敏感系統(tǒng)和閥前補(bǔ)償進(jìn)出口獨(dú)立控制系統(tǒng)分析模型,分別對(duì)兩系統(tǒng)在帶載提升工況下進(jìn)行了分析,并對(duì)進(jìn)口壓差補(bǔ)償進(jìn)出口獨(dú)立控制系統(tǒng)的節(jié)能特性進(jìn)行了分析。針對(duì)比例閥的死區(qū)、滯環(huán)特性,提出了死區(qū)滯環(huán)雙向等效補(bǔ)償方法,應(yīng)用自適應(yīng)慣性濾波器對(duì)壓力信號(hào)進(jìn)行了濾波,并設(shè)計(jì)了基于分區(qū)域的專家PID控制器的壓差前饋—反饋復(fù)合控制策略,提升了進(jìn)出口獨(dú)立控制系統(tǒng)的線性控制特性。基于所提出的進(jìn)出口獨(dú)立控制系統(tǒng)解決方案,以6T挖掘機(jī)為試驗(yàn)驗(yàn)證平臺(tái),分別對(duì)單執(zhí)行器運(yùn)動(dòng)和多執(zhí)行器復(fù)合運(yùn)動(dòng)進(jìn)行了試驗(yàn)研究。理論分析與試驗(yàn)結(jié)果表明:進(jìn)出口獨(dú)立控制系統(tǒng)在動(dòng)臂、斗桿和鏟斗的單執(zhí)行器運(yùn)動(dòng)中節(jié)能特性相比現(xiàn)有系統(tǒng)可分別提高39.5%、36.6%和32.3%;在動(dòng)臂鏟斗復(fù)合運(yùn)動(dòng)、動(dòng)臂斗桿復(fù)合運(yùn)動(dòng)、斗桿鏟斗復(fù)合運(yùn)動(dòng)和動(dòng)臂斗桿鏟斗復(fù)合運(yùn)動(dòng)的節(jié)能特性分別可提高20.2%、25.6%、27.8%和20.8%。
[Abstract]:Hydraulic system has been widely used in aerospace, ship, mobile vehicle, iron and steel industry because of its high output power-weight ratio, fast response, high control precision, and can provide remote control, etc. The hydraulic system has been widely used in aerospace, ship, mobile vehicle, iron and steel industry and so on. At the same time, the integration of hydraulic system and electronic control technology has greatly promoted the rapid growth of the application of electro-hydraulic control system. However, hydraulic system is a kind of transmission with high energy consumption in exchange for excellent control performance, and its application is increasingly challenged by other transmission technologies, such as mechanical transmission and electrical transmission. Therefore, energy saving control has become one of the focuses in the hydraulic field on the premise of meeting the performance requirements. The traditional valve-controlled hydraulic system uses a multi-throttling main control valve core to control the inlet and outlet oil circuit of the hydraulic actuator at the same time. In the process of inlet throttling speed regulation, the outlet carries on the throttling at the same time, resulting in the excess outlet throttling loss. The system has high energy consumption and low efficiency. Independent throttle control technology for hydraulic actuator inlet and outlet not only completes throttle speed control, but also takes into account pressure control. Therefore, the repeated throttling loss in traditional valve controlled hydraulic system can be eliminated. In view of the limitation of the traditional valve-controlled hydraulic system in the control of inlet and outlet throttle, this paper puts forward a solution of the independent control system, which takes into account the excellent control characteristics and low energy consumption, and gives the opening characteristics of the inlet and exit valve ports among them. The key problems such as pressure difference compensation characteristics and motion control characteristics are deeply studied. Based on the valve opening path of the traditional four-way valve-controlled hydraulic system, seven typical ways of opening the valve opening path of the independent control system are put forward, and their static characteristics are analyzed. Based on the state space equation, the dynamic characteristic simulation model of the independent control system is established, and the dynamic characteristic analysis is carried out. The optimal valve opening path mode of the independent control system is obtained. Based on the principle of hydraulic pressure difference compensation for load sensitive system, the inlet pressure difference compensation mode and outlet pressure difference compensation mode are obtained according to the independent regulation characteristics of the inlet and exit opening degree of the independent control system. Based on the calculation formula of pump source pressure, the optimal opening path of inlet differential pressure compensation system and outlet differential pressure compensation system is obtained. The static characteristic analysis is carried out, and the optimal compensation method of pressure difference is obtained. Based on the principle of pre-valve compensation and post-valve compensation, the analysis models of the original load sensitive system and the independent control system of the pre-valve compensation inlet and outlet are established, and the analysis of the two systems under the load lifting condition is carried out respectively. The energy saving characteristics of the imported pressure difference compensation import and export independent control system are analyzed. According to the dead-time and hysteresis characteristics of proportional valve, a two-way equivalent compensation method of dead-time hysteresis is proposed. The adaptive inertial filter is used to filter the pressure signal. The pressure difference feedforward-feedback compound control strategy based on sub-domain expert PID controller is designed to improve the linear control characteristics of the independent control system. Based on the proposed solution of the independent control system for import and export, the single actuator motion and the multi-actuator composite motion were tested and studied on the 6T excavator as the test verification platform. The results of theoretical analysis and test show that the energy-saving characteristics of the independent control system can be increased by 39.5%, 36.6% and 32.3% respectively compared with the existing system in the single actuator motion of the boom, bucket rod and bucket. The energy-saving characteristics of the combined movement of the moving arm shovel and bucket, the combined movement of the movable arm bucket and the movable arm bucket can be increased by 20.2%, 25.6%, 27.8% and 20.8%, respectively, and the energy saving characteristics of the combined movement can be improved by 20.2%, 25.6%, 27.8% and 20.8% respectively.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：TU621;TP273

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 汪國(guó)健;雙速液壓缸[J];液壓與氣動(dòng);2000年02期

2 趙軍;同步回路中液壓缸的新結(jié)構(gòu)[J];液壓與氣動(dòng);2001年08期

3 張劍慈;液壓缸失靈的原因分析與維修[J];機(jī)械工程師;2001年01期

4 張愛紅;雙向內(nèi)部鋼球鎖液壓缸[J];液壓與氣動(dòng);2002年04期

5 溫錦海,武俊喜,胡瑞峰;一種自動(dòng)卸荷式液壓缸[J];遼寧工學(xué)院學(xué)報(bào);2002年06期

6 吳興奎;一種新型結(jié)構(gòu)的液壓缸[J];液壓與氣動(dòng);2003年01期

7 高文斌,賈艷榮,于紅艷;改進(jìn)設(shè)計(jì)200t液壓缸[J];設(shè)備管理與維修;2003年09期

8 陳先惠;冶金行業(yè)液壓缸典型故障及其維修[J];液壓與氣動(dòng);2004年11期

9 趙江鴻;液壓缸故障排除[J];工程機(jī)械與維修;2005年19期

10 孫永紅;王麗;;徐液制造出超大液壓缸[J];工程機(jī)械文摘;2005年06期

相關(guān)會(huì)議論文 前10條

1 袁立鵬;趙克定;李海金;;閥控液壓缸統(tǒng)一流量方程的分析研究[A];中國(guó)力學(xué)學(xué)會(huì)學(xué)術(shù)大會(huì)'2005論文摘要集（上）[C];2005年

2 連偉才;蘇曉生;;探討提高機(jī)械液壓缸壽命的措施[A];九省二區(qū)第三屆泛珠三角先進(jìn)制造論壇論文集[C];2006年

3 佟立軍;;新型的液壓缸同步系統(tǒng)的探索與研究[A];2011年第九屆全國(guó)連鑄學(xué)術(shù)會(huì)議論文集[C];2011年

4 彭旭朝;彭磊;劉大葳;;淺談液壓缸壓板的改進(jìn)與應(yīng)用[A];河北省冶金學(xué)會(huì)冶金設(shè)備學(xué)術(shù)年會(huì)會(huì)議論文集[C];2013年

5 夏廷棟;宋慧領(lǐng);;新型液壓缸支承環(huán)的試驗(yàn)研究[A];中國(guó)機(jī)械工程學(xué)會(huì)物料搬運(yùn)專業(yè)學(xué)會(huì)第三屆年會(huì)論文集[C];1988年

6 鄭軍華;邢西哲;傅強(qiáng);;液壓缸故障診斷信號(hào)監(jiān)測(cè)系統(tǒng)的研究[A];液壓與氣動(dòng)學(xué)術(shù)研討會(huì)論文集[C];2004年

7 鄭軍華;邢西哲;傅強(qiáng);;液壓缸故障診斷信號(hào)監(jiān)測(cè)系統(tǒng)的研究[A];第三屆全國(guó)流體傳動(dòng)及控制工程學(xué)術(shù)會(huì)議論文集（第三卷）[C];2004年

8 泮健;施光林;楊鵬;;基于高速電磁開關(guān)閥的多液壓缸位置協(xié)調(diào)控制系統(tǒng)[A];中國(guó)機(jī)械工程學(xué)會(huì)流體傳動(dòng)與控制分會(huì)第六屆全國(guó)流體傳動(dòng)與控制學(xué)術(shù)會(huì)議論文集[C];2010年

9 阿里·塔哈;易孟林;曹樹平;宋靜;;采用不對(duì)稱液壓缸的電液伺服控制系統(tǒng)的研究[A];第一屆全國(guó)流體動(dòng)力及控制工程學(xué)術(shù)會(huì)議論文集（第二卷）[C];2000年

10 林榮川;郭隱彪;;液壓缸臨界載荷計(jì)算[A];福建省科協(xié)第四屆學(xué)術(shù)年會(huì)——提升福建制造業(yè)競(jìng)爭(zhēng)力的戰(zhàn)略思考專題學(xué)術(shù)年會(huì)論文集[C];2004年

相關(guān)重要報(bào)紙文章 前10條

1 劉錫禧;我市兩項(xiàng)目獲省科技專項(xiàng)資金[N];韶關(guān)日?qǐng)?bào);2011年

2 展軍;優(yōu)化密封選型 保障液壓缸高效運(yùn)轉(zhuǎn)[N];中國(guó)冶金報(bào);2009年

3 張琨;重液公司成功研發(fā)超高壓液壓缸[N];中國(guó)船舶報(bào);2010年

4 ;電動(dòng)步進(jìn)液壓缸在連鑄機(jī)上的應(yīng)用[N];世界金屬導(dǎo)報(bào);2013年

5 張磊 虞舒佳;馬鋼三鋼軋總廠液壓缸備件國(guó)產(chǎn)化成效顯著[N];中國(guó)冶金報(bào);2010年

6 記者 張侃　編輯 祝建華;星馬汽車一產(chǎn)品獲國(guó)家專利[N];上海證券報(bào);2010年

7 龔飛;長(zhǎng)江液壓公司特大型液壓缸系列項(xiàng)目通過驗(yàn)收[N];瀘州日?qǐng)?bào);2010年

8 ;舊機(jī)械的檢測(cè)與使用[N];中國(guó)交通報(bào);2010年

9 宗荷;國(guó)產(chǎn)陶瓷活塞桿液壓缸通過鑒定[N];中國(guó)船舶報(bào);2008年

10 羅強(qiáng);我國(guó)首套ME-C機(jī)液壓缸單元交付[N];中國(guó)船舶報(bào);2007年

相關(guān)博士學(xué)位論文 前4條

1 張柏森;薄壁鉭鈮管材矯直方法與裝備研究[D];東北大學(xué);2013年

2 劉凱磊;挖掘機(jī)電液控制系統(tǒng)進(jìn)出口獨(dú)立控制特性分析與實(shí)驗(yàn)研究[D];燕山大學(xué);2016年

3 潘峰;行程傳感液壓缸基礎(chǔ)技術(shù)的研究[D];浙江大學(xué);2002年

4 張京平;液壓缸內(nèi)動(dòng)邊界流場(chǎng)的數(shù)值分析[D];浙江大學(xué);2001年

相關(guān)碩士學(xué)位論文 前10條

1 王蘭;液壓缸計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)研究[D];燕山大學(xué);2001年

2 李宇彤;液壓缸智能計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)的開發(fā)和研究[D];吉林大學(xué);2005年

3 張文漢;液壓缸計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)的開發(fā)和研究[D];東北大學(xué);2008年

4 高挺;液壓缸再制造可行性分析[D];武漢科技大學(xué);2013年

5 沈洋;基于動(dòng)網(wǎng)格技術(shù)的高速液壓缸動(dòng)態(tài)過程流場(chǎng)數(shù)值模擬[D];武漢科技大學(xué);2013年

6 廖建源;液壓缸計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)開發(fā)研究[D];華南理工大學(xué);2015年

7 朱宇馳;裝載機(jī)動(dòng)臂液壓缸可靠性研究[D];燕山大學(xué);2015年

8 李彩紅;WY20挖掘機(jī)液壓缸密封分析與改進(jìn)[D];燕山大學(xué);2015年

9 邢玉龍;液壓缸精密驅(qū)動(dòng)單元實(shí)驗(yàn)研究[D];天津理工大學(xué);2015年

10 劉洪春;液壓缸綜合性能測(cè)試試驗(yàn)臺(tái)機(jī)械結(jié)構(gòu)及液控部分的設(shè)計(jì)與開發(fā)[D];南京理工大學(xué);2015年

，

本文編號(hào)：2470898