【摘要】：磁流變液作為一種半主動(dòng)智能材料，，液體流動(dòng)性及剪切屈服強(qiáng)度隨外加磁場(chǎng)強(qiáng)度而變化，具有響應(yīng)速度快、耗能低、連續(xù)可逆等特點(diǎn)。目前，國(guó)內(nèi)外研究者以磁流變液為工作介質(zhì)，設(shè)計(jì)出相應(yīng)的磁流變阻尼器(Magnetorheological Damper簡(jiǎn)稱MRD)、磁流變閥及磁流變離合器等，其中MRD的研究及應(yīng)用更為廣泛。傳統(tǒng)的MRD研究主要集中于阻尼器的力學(xué)性能分析，而在半主動(dòng)控制系統(tǒng)中應(yīng)用MRD時(shí)，需要借助于阻尼器的位移或者速度信號(hào)作為控制信號(hào)源。因此常采用外接傳感器的方式，采集阻尼器的位移或速度信號(hào)，在滿足阻尼器控制要求的同時(shí)，增加了整個(gè)控制系統(tǒng)的復(fù)雜性，降低了系統(tǒng)穩(wěn)定性。本文以剪切閥式磁流變阻尼器為原型，依據(jù)差動(dòng)位移自傳感原理，對(duì)傳統(tǒng)MRD結(jié)構(gòu)進(jìn)行集成創(chuàng)新，設(shè)計(jì)出一種位移差動(dòng)自傳感磁流變阻尼器(DisplacementDifferential Self-induced Magnetorheological Damper簡(jiǎn)稱DDSMRD)。在滿足阻尼力隨外加電流連續(xù)可調(diào)性能同時(shí)，還可以獲得阻尼器相對(duì)位移信號(hào)，達(dá)到阻尼可控與位移自傳感的功能集成。 論文主要研究?jī)?nèi)容如下： 1.提出了DDSMRD的結(jié)構(gòu)模型，并建立相對(duì)應(yīng)的力學(xué)模型，分析了差動(dòng)位移感應(yīng)原理中感應(yīng)電動(dòng)勢(shì)與位移關(guān)系。詳細(xì)敘述了DDSMRD結(jié)構(gòu)中各構(gòu)件設(shè)計(jì)計(jì)算過(guò)程，依據(jù)所確定的結(jié)構(gòu)參數(shù)，對(duì)阻尼器磁路中磁阻計(jì)算分析。 2.利用ANSYS對(duì)DDSMRD靜態(tài)磁場(chǎng)進(jìn)行了仿真分析，獲得了不同電流下阻尼有效長(zhǎng)度處平均磁感應(yīng)強(qiáng)度與電流關(guān)系曲線；通過(guò)耦合場(chǎng)仿真分析了阻尼器在不同激勵(lì)幅值及不同位置點(diǎn)的諧波磁場(chǎng)，獲得相應(yīng)的感應(yīng)電動(dòng)勢(shì)幅值。利用阻尼器的力學(xué)模型及靜態(tài)磁場(chǎng)仿真數(shù)據(jù)，通過(guò)Matlab/Simulink對(duì)阻尼器的動(dòng)力特性進(jìn)行了仿真分析。 3.利用LabVIEW設(shè)計(jì)出DDSMRD位移信號(hào)采集控制界面，并結(jié)合相關(guān)實(shí)驗(yàn)設(shè)備設(shè)計(jì)出阻尼器位移信號(hào)采集系統(tǒng)。通過(guò)阻尼器的靜態(tài)拉伸實(shí)驗(yàn)，分析了阻尼器的靜態(tài)感應(yīng)性能，同時(shí)驗(yàn)證了位移信號(hào)系統(tǒng)的實(shí)用性。 4.設(shè)計(jì)出DDSMRD活塞頭激勵(lì)信號(hào)發(fā)生電路，搭建了阻尼器實(shí)驗(yàn)測(cè)試系統(tǒng)，并對(duì)阻尼器的自感應(yīng)特性及動(dòng)力特性進(jìn)行了相關(guān)實(shí)驗(yàn)分析研究。
[Abstract]:As a semi-active intelligent material, the fluidity and shear yield strength of the magnetorheological fluid vary with the applied magnetic field strength. It has the characteristics of fast response, low energy consumption and continuous reversibility. At present, researchers at home and abroad have designed the corresponding magnetorheological damper (Magnetorheological Damper), called MRD), magnetorheological valve and magnetorheological clutch, using MRF as the working medium, among which the research and application of MRD are more extensive. The traditional MRD research mainly focuses on the mechanical performance analysis of the damper. When applying MRD in semi-active control system, it is necessary to use the displacement or velocity signal of the damper as the control signal source. Therefore, the external sensor is often used to collect the displacement or velocity signals of the damper, which not only meets the control requirements of the damper, but also increases the complexity of the whole control system and reduces the stability of the system. In this paper, based on the principle of differential displacement self-sensing and based on the principle of differential displacement self-sensing, a displacement differential self-sensing magnetorheological damper (DisplacementDifferential Self-induced Magnetorheological Damper) is designed based on the prototype of shear valve magneto-rheological damper, and the traditional MRD structure is integrated and innovated. A displacement differential self-sensing magneto-rheological damper (DDSMRD).) is designed. At the same time, the damping force can be adjusted continuously with the applied current, and the relative displacement signal of the damper can be obtained, which can achieve the function integration of damping controllability and displacement autobiography. The main contents of this paper are as follows: 1. The structure model of DDSMRD is proposed and the corresponding mechanical model is established. The relationship between induced electromotive force and displacement in differential displacement induction principle is analyzed. The design and calculation process of each component in DDSMRD structure is described in detail. According to the determined structural parameters, the magnetoresistive calculation in the magnetic circuit of the damper is analyzed. 2. The static magnetic field of DDSMRD is simulated and analyzed by ANSYS, and the curve of the relationship between the average magnetic induction intensity and the current at the damping effective length under different current is obtained. The harmonic magnetic field of the damper at different excitation amplitude and different position is analyzed by coupling field simulation, and the corresponding amplitude of induction electromotive force is obtained. Based on the mechanical model and static magnetic field simulation data of the damper, the dynamic characteristics of the damper are simulated and analyzed by Matlab/Simulink. 3. The DDSMRD displacement signal acquisition control interface is designed by using LabVIEW, and the damper displacement signal acquisition system is designed by combining with the related experimental equipment. The static induction performance of the damper is analyzed and the practicability of the displacement signal system is verified by the static tensile experiment of the damper. 4. The exciting signal generation circuit of DDSMRD piston head is designed and the experimental testing system of damper is built. The self-induction and dynamic characteristics of the damper are analyzed and studied.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB535.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 顧曉蕾;唐志峰;呂福在;劉磊;;無(wú)源自適應(yīng)磁流變阻尼器設(shè)計(jì)與研究[J];地震工程與工程振動(dòng);2012年01期

本文編號(hào)：2338868