本文選題：橋式起重機(jī) + 永磁渦流制動(dòng)��； 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：永磁渦流制動(dòng)結(jié)構(gòu)簡(jiǎn)單,制動(dòng)平穩(wěn)可靠,節(jié)能環(huán)保,是渦流制動(dòng)的主要模式之一。由于永磁渦流制動(dòng)感應(yīng)渦流模型解析計(jì)算復(fù)雜,制動(dòng)控制困難,是制約其進(jìn)一步發(fā)展的主要原因。為將永磁渦流制動(dòng)應(yīng)用于起重機(jī),實(shí)現(xiàn)起重機(jī)制動(dòng)控制自動(dòng)化,本文基于永磁電動(dòng)懸浮電磁學(xué)理論,建立了直線型和旋轉(zhuǎn)型永磁渦流制動(dòng)的三維解析計(jì)算數(shù)學(xué)模型,并基于該數(shù)學(xué)模型提出了一種新的永磁渦流制動(dòng)實(shí)現(xiàn)模式。結(jié)合起重機(jī)機(jī)構(gòu)結(jié)構(gòu)特點(diǎn)及其制動(dòng)需求,對(duì)起重機(jī)永磁渦流制動(dòng)進(jìn)行了方案設(shè)計(jì)和仿真分析,并對(duì)制動(dòng)過(guò)程進(jìn)行了動(dòng)力學(xué)分析,設(shè)計(jì)了永磁渦流制動(dòng)參數(shù),研究了起重機(jī)永磁渦流制動(dòng)特性。本文主要研究?jī)?nèi)容如下所示:(1)基于永磁電動(dòng)懸浮電磁學(xué)理論,建立了直線型永磁渦流制動(dòng)力和旋轉(zhuǎn)型永磁渦流制動(dòng)力矩的三維解析計(jì)算數(shù)學(xué)模型。有限元分析結(jié)果表明,所建立的永磁渦流制動(dòng)電磁力數(shù)學(xué)模型的解析計(jì)算結(jié)果與有限元計(jì)算結(jié)果的相對(duì)誤差皆在3%以內(nèi),具有很高的精度。(2)根據(jù)永磁渦流制動(dòng)電磁力數(shù)學(xué)模型,提出了通過(guò)改變永磁陣列組的相對(duì)位移和相對(duì)轉(zhuǎn)角調(diào)節(jié)制動(dòng)力和制動(dòng)力矩的實(shí)現(xiàn)模型。通過(guò)仿真分析證明了該實(shí)現(xiàn)模型能實(shí)現(xiàn)較大范圍的制動(dòng)力和制動(dòng)力矩的調(diào)節(jié)。(3)結(jié)合橋式起重機(jī)QD10-13.5起重小車和大車運(yùn)行機(jī)構(gòu)的結(jié)構(gòu)特點(diǎn)和制動(dòng)需求對(duì)其進(jìn)行了永磁渦流制動(dòng)方案設(shè)計(jì),并進(jìn)行了磁場(chǎng)、電磁力和制動(dòng)功率仿真分析�；谄鹬貦C(jī)防搖設(shè)計(jì),建立了吊重二自由度擺角動(dòng)力學(xué)模型,分析了小車運(yùn)行機(jī)構(gòu)按一元四次函數(shù)規(guī)律制動(dòng)時(shí)的動(dòng)力學(xué)特性,確定出了永磁渦流制動(dòng)參數(shù)設(shè)計(jì)標(biāo)準(zhǔn)。(4)對(duì)起重機(jī)小車運(yùn)行機(jī)構(gòu)進(jìn)行了永磁渦流制動(dòng)參數(shù)設(shè)計(jì),通過(guò)仿真分析證明了所選參數(shù)滿足永磁渦流制動(dòng)參數(shù)設(shè)計(jì)標(biāo)準(zhǔn)。進(jìn)行了小車運(yùn)行機(jī)構(gòu)制動(dòng)過(guò)程動(dòng)態(tài)制動(dòng)特性分析,探究了擺長(zhǎng)、制動(dòng)時(shí)間、制動(dòng)距離和制動(dòng)初速度對(duì)永磁陣列組相對(duì)轉(zhuǎn)角、轉(zhuǎn)角速度以及制動(dòng)功率的影響機(jī)理,證明了本文提出的實(shí)現(xiàn)模型的可行性和參數(shù)設(shè)計(jì)的合理性。綜上所述,本文對(duì)起重機(jī)機(jī)構(gòu)永磁渦流制動(dòng)進(jìn)行了建模、方案設(shè)計(jì)、仿真分析與制動(dòng)特性分析,其研究結(jié)果對(duì)起重機(jī)永磁渦流制動(dòng)的設(shè)計(jì)具有參考價(jià)值,對(duì)實(shí)現(xiàn)起重機(jī)制動(dòng)控制自動(dòng)化具有重要意義。
[Abstract]:Permanent magnet eddy current braking is one of the main modes of eddy current braking with simple structure, stable and reliable braking, energy saving and environmental protection. The complex analytical calculation of permanent magnet eddy current braking induced eddy current model and the difficulty of braking control are the main reasons restricting its further development. In order to apply permanent magnet eddy current brake to crane and realize the automation of crane braking control, based on the theory of permanent magnet electric suspension electromagnetism, a three-dimensional analytical mathematical model of linear and rotating permanent magnet eddy current braking is established in this paper. Based on the mathematical model, a new permanent magnet eddy current braking model is proposed. Combined with the structure characteristics of crane mechanism and its braking requirements, the scheme design and simulation analysis of permanent magnet eddy current braking of crane are carried out, and the dynamic analysis of braking process is carried out, and the parameters of permanent magnet eddy current braking are designed. The characteristics of permanent magnet eddy current braking of crane are studied. The main contents of this paper are as follows: (1) based on the theory of permanent magnet electromagnetics, the mathematical models of linear permanent magnet eddy current braking force and rotating permanent magnet eddy current braking moment are established. The results of finite element analysis show that the relative error between the analytical and finite element calculation results of the established mathematical model of permanent magnet eddy current braking electromagnetic force is within 3%, and has a high precision. (2) according to the mathematical model of electromagnetic force of permanent magnet eddy current brake, The realization model of adjusting braking force and braking moment by changing relative displacement and relative rotation angle of permanent magnet array is proposed. The simulation results show that the model can achieve a wide range of braking force and brake torque regulation. 3) combined with the structural characteristics and braking requirements of the QD10-13.5 crane and the crane operation mechanism, the permanent magnet is carried out. Eddy current braking scheme design, The magnetic field, electromagnetic force and braking power are simulated and analyzed. Based on the anti-rocking design of crane, the dynamic model of two degrees of freedom swing angle of crane is established, and the dynamic characteristics of trolley operating mechanism when braking according to the law of quartic function are analyzed. The design standard of permanent magnet eddy current braking parameters is determined. (4) the design of permanent magnet eddy current braking parameters for crane trolley is carried out. The simulation results show that the selected parameters meet the design standard of permanent magnet eddy current braking parameters. In this paper, the dynamic braking characteristics of trolley operating mechanism are analyzed, and the influence mechanism of pendulum length, braking time, braking distance and braking initial velocity on relative rotation angle, angular velocity and braking power of permanent magnet array is discussed. The feasibility of the model and the rationality of parameter design are proved. To sum up, the permanent magnet eddy current brake of crane mechanism is modeled, scheme design, simulation analysis and braking characteristic analysis. The research results have reference value for the design of crane permanent magnet eddy current brake. It is of great significance to realize the automation of crane braking control.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH21

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本文編號(hào)：1833940