發(fā)布時(shí)間：2018-07-23 13:53

【摘要】：當(dāng)實(shí)際工況需要馬達(dá)有多級(jí)不同轉(zhuǎn)矩、轉(zhuǎn)速的輸出,一般的定量馬達(dá)是不能實(shí)現(xiàn)的。針對(duì)這個(gè)不足,從馬達(dá)基本原理出發(fā),研制出了一系列基于“雙定子”結(jié)構(gòu)的新型馬達(dá)。在“雙定子”結(jié)構(gòu)中,一個(gè)轉(zhuǎn)子與兩個(gè)定子分別相互配合,在不改變馬達(dá)輸入流量且沒(méi)有復(fù)雜變量機(jī)構(gòu)的條件下,這種新型馬達(dá)通過(guò)不同進(jìn)、出油口的連接可以輸出多種不同的轉(zhuǎn)速和轉(zhuǎn)矩。如果當(dāng)作泵來(lái)使用,則可以不用減壓閥同時(shí)工作在不同壓力下且輸出多種不同流量以滿足系統(tǒng)需要。這樣就可以在液壓系統(tǒng)中節(jié)省泵、馬達(dá)和閥的使用數(shù)量,同時(shí)節(jié)省了能量消耗。 本文所研究的是“雙定子”結(jié)構(gòu)之一的矩形滑塊雙定子軸向液壓馬達(dá)。文中首先綜述了液壓技術(shù)和軸向液壓馬達(dá)領(lǐng)域的研究現(xiàn)狀和發(fā)展趨勢(shì),在分析了現(xiàn)有液壓馬達(dá)在實(shí)際應(yīng)用中的不足之后,提出了這種“雙定子”結(jié)構(gòu)的新型原理馬達(dá),并對(duì)多泵多馬達(dá)系統(tǒng)中單作用多泵多馬達(dá)傳動(dòng)進(jìn)行了詳細(xì)的論述。在此基礎(chǔ)上結(jié)合軟件對(duì)該馬達(dá)進(jìn)行了較全面的理論和仿真分析,包括馬達(dá)的運(yùn)動(dòng)學(xué)和受力特性等。建立了滑塊的位移、速度、加速度數(shù)學(xué)模型和一個(gè)馬達(dá)和兩個(gè)馬達(dá)同時(shí)工作時(shí),分奇、偶滑塊數(shù)不同情況,推導(dǎo)了馬達(dá)輸出瞬時(shí)角速度和扭矩的數(shù)學(xué)模型,并根據(jù)馬達(dá)實(shí)際樣機(jī)的尺寸,進(jìn)行了Matlab仿真,得到了這種馬達(dá)一些獨(dú)有的特性。深入探討了這種新型馬達(dá)的泄漏途徑,得到了馬達(dá)主要泄漏面的數(shù)學(xué)模型,并仿真分析了在考慮泄漏時(shí)馬達(dá)輸出的瞬時(shí)角速度的變化情況。仿真分析了馬達(dá)主要運(yùn)動(dòng)件的運(yùn)動(dòng)和受力情況,驗(yàn)證了前面建立的馬達(dá)數(shù)學(xué)模型的正確性,同時(shí)發(fā)現(xiàn)了馬達(dá)樣機(jī)設(shè)計(jì)中的一些不足。對(duì)馬達(dá)直立配流副利用Fluent軟件進(jìn)行了靜態(tài)流場(chǎng)分析,得到了液壓油速度和壓力的分布規(guī)律,為研究馬達(dá)配流副的支撐特性和泄漏脈動(dòng)奠定了基礎(chǔ)。最后通過(guò)樣機(jī)試驗(yàn)驗(yàn)證了該馬達(dá)原理的正確性,并對(duì)全文的工作進(jìn)行了總結(jié)和對(duì)后續(xù)工作的展望。 通過(guò)以上幾個(gè)方面的研究工作,獲得了這種新型馬達(dá)較全面的數(shù)學(xué)描述和仿真結(jié)果,為在短時(shí)間內(nèi)定型馬達(dá)樣機(jī),降低成本,進(jìn)而進(jìn)入實(shí)際生產(chǎn)階段做了理論鋪墊。本文所用的分析和仿真方法也可為其它液壓元件開(kāi)發(fā)時(shí)作參考。
[Abstract]:The general quantitative motor can not be realized when multi-stage torque and speed output are required in actual working conditions. According to the basic principle of motor, a series of new motors based on double stator structure are developed. In the "double stator" structure, one rotor and two stator cooperate with each other, without changing the input flow rate of the motor and without complex variable mechanism, this new type of motor passes through different feed. The connection of the outlet can output a variety of rotational speed and torque. If it is used as a pump, it can work at different pressure and output different flow rate to meet the need of the system without reducing the pressure valve at the same time. This saves pumps, motors and valves in the hydraulic system and saves energy consumption. In this paper, the axial hydraulic motor with rectangular slider and double stator is studied. In this paper, the research status and development trend of hydraulic technology and axial hydraulic motor are summarized firstly. After analyzing the deficiency of the existing hydraulic motor in practical application, a new type of principle motor with double stator structure is proposed. The single-acting multi-pump multi-motor drive in multi-pump multi-motor system is discussed in detail. On this basis, a comprehensive theoretical and simulation analysis of the motor is carried out, including the kinematics and mechanical characteristics of the motor. The mathematical model of displacement, velocity and acceleration of the slider and the mathematical model of the output instantaneous angular velocity and torque of the motor are established when one motor and two motors work at the same time. According to the size of the actual prototype of the motor, the Matlab simulation is carried out, and some unique characteristics of the motor are obtained. The leakage path of the new motor is discussed in depth, and the mathematical model of the main leakage surface of the motor is obtained, and the instantaneous angular velocity variation of the motor output when considering the leakage is simulated and analyzed. The movement and force of the main moving parts of the motor are simulated and analyzed, and the correctness of the mathematical model of the motor is verified. At the same time, some shortcomings in the design of the motor prototype are found. The static flow field analysis of motor vertical distribution pair is carried out by using Fluent software, and the distribution law of hydraulic oil velocity and pressure is obtained, which lays a foundation for studying the supporting characteristics and leakage pulsation of motor distribution pair. Finally, the correctness of the motor principle is verified by the prototype test, and the work of the whole paper is summarized and the future work is prospected. Through the above research work, a more comprehensive mathematical description and simulation results of the new motor are obtained, which provides a theoretical basis for the prototype of the motor to be finalized in a short time, to reduce the cost, and then to enter the stage of actual production. The analysis and simulation method used in this paper can also be used as a reference for the development of other hydraulic components.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH137.51

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