Principle, design and modeling of an integrated relative displacement self-sensing magnetorheological damper based on electromagnetic induction
Principle, design and modeling of an integrated relative displacement self-sensing magnetorheological damper based on electromagnetic induction
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DOI：
10.1088/0964-1726/18/9/095025
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发表时间：
2009-09
影响因子：
4.1
通讯作者：
D. H. Wang;T. Wang
中科院分区：
文献类型：
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作者：
D. H. Wang;T. Wang
为了充分利用磁流变阻尼器的阻尼可控特性，需要对磁流变阻尼器的阻尼力进行反馈控制，这就需要额外的动态响应传感器和主动控制系统。用于磁流变阻尼器半主动控制的额外动态响应传感器将增加磁流变阻尼器的应用成本，占用安装空间，使系统复杂化，降低可靠性。本文介绍了基于电磁感应原理的集成相对位移传感器（IRDS）技术，以及基于IRDS技术的集成相对位移自传感磁流变阻尼器（IRDSMRD）的工作原理。IRDSMRD主要包括绕在活塞上的励磁线圈和绕在非磁性气缸上的感应线圈。在IRDSMRD中，缠绕在活塞上的线圈同时充当磁流变液和IRDS的激励线圈，而缠绕在气缸上的线圈充当IRDS的感应线圈。环形流体通道中的磁流变液和磁流变液同时受到励磁线圈的激励，通过使磁流变液的载波（交流）与磁流变液的电流（直流）具有不同的频率，实现了励磁线圈的分频复用。基于所提出的IRDS和IRDSMRD的原理，设计并建模了IRDSMRD，并利用Maxwell 2D软件包对所设计和研制的IRDSMRD的阻尼和传感性能进行了有限元建模和分析。研究结果表明，可以将相对位移传感特性的功能集成到磁流变阻尼器中，利用本文提出的IRDS技术设计的IRDSMRD具有较大的可控阻尼比和良好的相对位移传感性能。
In order to make full use of the controllable damping characteristics of magnetorheological (MR) dampers, feedback control of the damping forces for MR dampers is necessary, which needs extra dynamic response sensors and control systems as active control systems do. The extra dynamic response sensors for semi-active control of the MR dampers will increase the application cost of MR dampers, occupy the installation space, complicate the system, and decrease the reliability. In this paper, an integrated relative displacement sensor (IRDS) technology to make MR dampers self-sensing based on electromagnetic induction, and the principle of an integrated relative displacement self-sensing MR damper (IRDSMRD) based on the IRDS technology, are introduced. The IRDSMRD mainly comprises an exciting coil wound on the piston and an induction coil wound on the nonmagnetic cylinder. In the IRDSMRD, the coil wound on the piston simultaneously acts as the exciting coils of the MR fluid and the IRDS while the coil wound on the cylinder acts as the induction coil of the IRDS. The MR fluid in the annular fluid channel and the IRDS are simultaneously energized by the exciting coil through letting the carrier of the IRDS (AC) possess different frequency from the current for the MR fluid (DC), which realizes the frequency division multiplexing of the exciting coil. Based on the proposed principle for the IRDS and IRDSMRD, an IRDSMRD is designed and modeled and the damping and sensing performances of the designed and developed IRDSMRD are also modeled and analyzed using the finite element method (FEM) with the software package Maxwell 2D. The research results indicate that the function of the relative displacement sensing property can be integrated into MR dampers, and the designed IRDSMRD possesses large controllable damping ratio and good relative displacement sensing performance utilizing the IRDS technology proposed in this paper.