位移差动自感式磁流变阻尼器自感应性能及动力特性实验研究
发布时间：2018-11-17 19:50
【摘要】：磁流变液作为一种半主动智能材料，，液体流动性及剪切屈服强度随外加磁场强度而变化，具有响应速度快、耗能低、连续可逆等特点。目前，国内外研究者以磁流变液为工作介质，设计出相应的磁流变阻尼器(Magnetorheological Damper简称MRD)、磁流变阀及磁流变离合器等，其中MRD的研究及应用更为广泛。传统的MRD研究主要集中于阻尼器的力学性能分析，而在半主动控制系统中应用MRD时，需要借助于阻尼器的位移或者速度信号作为控制信号源。因此常采用外接传感器的方式，采集阻尼器的位移或速度信号，在满足阻尼器控制要求的同时，增加了整个控制系统的复杂性，降低了系统稳定性。本文以剪切阀式磁流变阻尼器为原型，依据差动位移自传感原理，对传统MRD结构进行集成创新，设计出一种位移差动自传感磁流变阻尼器(DisplacementDifferential Self-induced Magnetorheological Damper简称DDSMRD)。在满足阻尼力随外加电流连续可调性能同时，还可以获得阻尼器相对位移信号，达到阻尼可控与位移自传感的功能集成。 论文主要研究内容如下： 1.提出了DDSMRD的结构模型，并建立相对应的力学模型，分析了差动位移感应原理中感应电动势与位移关系。详细叙述了DDSMRD结构中各构件设计计算过程，依据所确定的结构参数，对阻尼器磁路中磁阻计算分析。 2.利用ANSYS对DDSMRD静态磁场进行了仿真分析，获得了不同电流下阻尼有效长度处平均磁感应强度与电流关系曲线；通过耦合场仿真分析了阻尼器在不同激励幅值及不同位置点的谐波磁场，获得相应的感应电动势幅值。利用阻尼器的力学模型及静态磁场仿真数据，通过Matlab/Simulink对阻尼器的动力特性进行了仿真分析。 3.利用LabVIEW设计出DDSMRD位移信号采集控制界面，并结合相关实验设备设计出阻尼器位移信号采集系统。通过阻尼器的静态拉伸实验，分析了阻尼器的静态感应性能，同时验证了位移信号系统的实用性。 4.设计出DDSMRD活塞头激励信号发生电路，搭建了阻尼器实验测试系统，并对阻尼器的自感应特性及动力特性进行了相关实验分析研究。
[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.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB535.1
本文编号：2338868
[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.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB535.1
【参考文献】
相关期刊论文 前1条
1 顾晓蕾;唐志峰;吕福在;刘磊;;无源自适应磁流变阻尼器设计与研究[J];地震工程与工程振动;2012年01期
本文编号：2338868
本文链接：https://www.wllwen.com/guanlilunwen/gongchengguanli/2338868.html
