本文選題：液壓變壓器 + 恒壓網(wǎng)絡(luò)�。� 參考：《哈爾濱工業(yè)大學(xué)》2013年博士論文

【摘要】：隨著人類社會(huì)的發(fā)展，能源問(wèn)題越來(lái)越引起人們的重視，在液壓傳動(dòng)領(lǐng)域，如何提高液壓系統(tǒng)的效率，降低能耗一直是人們研究的熱點(diǎn)。恒壓網(wǎng)絡(luò)二次調(diào)節(jié)技術(shù)一方面可以使動(dòng)力源工作在高效區(qū)，另一方面降低了液壓系統(tǒng)的節(jié)流損失并且可以對(duì)負(fù)負(fù)載的能量進(jìn)行回收再利用，因此極大的提高了整個(gè)液壓系統(tǒng)的傳動(dòng)效率，有廣闊的應(yīng)用前景�；诤銐壕W(wǎng)絡(luò)容積控制的二次調(diào)節(jié)靜液傳動(dòng)技術(shù)只能應(yīng)用在旋轉(zhuǎn)負(fù)載情況下，當(dāng)執(zhí)行元件為直線負(fù)載時(shí)就必須用到液壓變壓器。集成式液壓變壓器將液壓泵/馬達(dá)功能集成于一體，結(jié)構(gòu)緊湊、體積小，可以在恒壓網(wǎng)絡(luò)容積控制二次調(diào)節(jié)靜液傳動(dòng)系統(tǒng)中無(wú)節(jié)流損失的控制液壓執(zhí)行元件，還可以回收負(fù)負(fù)載的能量，簡(jiǎn)化了液壓系統(tǒng)的結(jié)構(gòu)，提高了液壓系統(tǒng)的效率，因此，對(duì)集成式液壓變壓器的研究具有重要的理論意義和實(shí)用價(jià)值。 在查閱大量國(guó)內(nèi)外相關(guān)文獻(xiàn)的基礎(chǔ)上，對(duì)目前國(guó)內(nèi)外研究的液壓變壓器進(jìn)行了分類，重點(diǎn)分析了集成式液壓變壓器的工作原理及其應(yīng)用前景，闡述了國(guó)內(nèi)外集成式液壓變壓器的應(yīng)用與發(fā)展?fàn)顩r，提出了論文的主要研究?jī)?nèi)容。 集成式液壓變壓器是一種新型的液壓元件，首先對(duì)其變壓原理進(jìn)行了理論分析，基于理論分析設(shè)計(jì)了電液伺服擺動(dòng)液壓馬達(dá)做為液壓變壓器的伺服驅(qū)動(dòng)機(jī)構(gòu)，設(shè)計(jì)了一種電液伺服擺動(dòng)液壓馬達(dá)控制的斜盤(pán)柱塞式液壓變壓器，實(shí)現(xiàn)了液壓變壓器通過(guò)電液伺服擺動(dòng)液壓馬達(dá)來(lái)進(jìn)行變壓比的控制，在主軸上設(shè)計(jì)配流油路實(shí)現(xiàn)液壓變壓器的配流。該電液伺服斜盤(pán)柱塞式液壓變壓器具有體積小，結(jié)構(gòu)緊湊，動(dòng)態(tài)響應(yīng)快，變壓過(guò)程理論上無(wú)節(jié)流損失，變壓范圍大等優(yōu)點(diǎn)。 本文基于剩余壓緊力和剩余壓緊力矩法對(duì)液壓變壓器的平面配流結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)，并采用遺傳算法進(jìn)行了求解。采用三角錐作為配流盤(pán)緩沖槽的結(jié)構(gòu)形式，建立了過(guò)渡過(guò)程的壓力緩沖數(shù)學(xué)模型并進(jìn)行了MATLAB仿真，得到了最佳的緩沖槽結(jié)構(gòu)參數(shù)，運(yùn)用ADINA軟件的流固耦合功能進(jìn)行了配流盤(pán)緩沖槽的有限元分析，并對(duì)液壓變壓器的噪聲進(jìn)行了測(cè)量。 建立了電液伺服斜盤(pán)柱塞式液壓變壓器瞬時(shí)流量特性、瞬時(shí)轉(zhuǎn)矩特性的數(shù)學(xué)模型，從液壓變壓器的控制角為零的情況推廣到控制角為全區(qū)間的情況，仿真結(jié)果表明液壓變壓器的流量脈動(dòng)率、轉(zhuǎn)矩脈動(dòng)率在全區(qū)間范圍內(nèi)很大，并對(duì)不同柱塞數(shù)下的流量脈動(dòng)率進(jìn)行了對(duì)比研究。 針對(duì)電液伺服斜盤(pán)柱塞式液壓變壓器壓力控制的特點(diǎn)，對(duì)其控制策略進(jìn)行了研究。建立了電液伺服斜盤(pán)柱塞式液壓變壓器的數(shù)學(xué)模型，，采用模糊 PID雙�？刂撇呗赃M(jìn)行壓力控制，在小偏差時(shí)，采用PID控制，可以提高系統(tǒng)的穩(wěn)定性和減小誤差，在大偏差時(shí)，采用模糊控制，提高系統(tǒng)的快速性和智能性。基于理論分析和手動(dòng)控制的經(jīng)驗(yàn)，對(duì)模糊控制器進(jìn)行了設(shè)計(jì)，在MATLAB/Simulink環(huán)境下搭建了仿真模型并進(jìn)行了仿真研究。 最后，設(shè)計(jì)制造了一臺(tái)電液伺服斜盤(pán)柱塞式液壓變壓器，搭建了實(shí)驗(yàn)平臺(tái)，基于C++Builder編寫(xiě)了測(cè)控軟件，基于該實(shí)驗(yàn)系統(tǒng)對(duì)電液伺服斜盤(pán)柱塞式液壓變壓器進(jìn)行了實(shí)驗(yàn)研究，對(duì)液壓變壓器的性能進(jìn)行了測(cè)試，驗(yàn)證了理論分析和控制策略的正確性和有效性。
[Abstract]:With the development of human society , the energy problem is attracting more and more attention . In the field of hydraulic transmission , how to improve the efficiency of hydraulic system and reduce energy consumption has been the hot spot .

On the basis of consulting relevant literatures at home and abroad , the paper classifies the hydraulic transformer at home and abroad , emphatically analyses the working principle and application prospect of integrated hydraulic transformer , expounds the application and development of integrated hydraulic transformer at home and abroad , and puts forward the main research contents of the paper .

The integrated hydraulic transformer is a new kind of hydraulic component . Firstly , the principle of pressure transformation is analyzed theoretically . Based on the theory analysis , the servo drive mechanism of the electro - hydraulic servo oscillating hydraulic motor is designed . The hydraulic transformer is controlled by the electro - hydraulic servo oscillating hydraulic motor . The hydraulic transformer is designed with hydraulic servo - swinging hydraulic motor . The hydraulic transformer has the advantages of small volume , compact structure , fast dynamic response , no throttling loss in the theory of pressure swing process , large pressure swing range , etc .

Based on the residual compaction force and the residual compaction torque method , the planar distribution structure of hydraulic transformer is optimized and solved . The mathematical model of pressure buffering in the transition process is established by using the triangular pyramid as the structure of the buffer tank of the distribution plate . The optimum buffer groove structure parameters are obtained . The finite element analysis of the buffer tank of the flow tray is carried out by using the flow - solid coupling function of ADINA software , and the noise of the hydraulic transformer is measured .

A mathematical model of instantaneous flow characteristic and instantaneous torque characteristic of an electro - hydraulic servo swash plate plunger type hydraulic transformer is established . The control angle is extended from the control angle of the hydraulic transformer to the whole area , and the simulation results show that the flow pulsation rate and the torque ripple ratio of the hydraulic transformer are large in the whole range , and the flow pulsation rate under different plunger numbers is compared .

閽堝鐢墊恫浼烘湇鏂滅洏鏌卞寮忔恫鍘嬪彉鍘嬪櫒鍘嬪姏鎺у埗鐨勭壒鐐

本文編號(hào)：2002800