An integrated relative displacement self-sensing magnetorheological damper: prototyping and testing
An integrated relative displacement self-sensing magnetorheological damper: prototyping and testing
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DOI：
10.1088/0964-1726/19/10/105008
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发表时间：
2010-10
影响因子：
4.1
通讯作者：
D. H. Wang;X. Bai;W. Liao
中科院分区：
文献类型：
--
作者：
D. H. Wang;X. Bai;W. Liao
本文提出了一种集成式相对位移自感知磁流变阻尼器（IRDSMRD）及其相应的实现集成式相对位移传感和可控阻尼的电子系统，包括相对位移调制/解调器，用于叠加集成相对位移传感器（IRDS）的载波信号的电路对可控阻尼和可控电流驱动器的可控电流驱动器的励磁电流进行了开发和测试。在所研制的IRDSMRD中，激励线圈由来自可控电流驱动器的电流激励，其上用于IRDS的载波信号由叠加电路叠加。通过对IRDS和MR阻尼器的激励线圈进行频分复用，实现了IRDSMRD的活塞和气缸之间的相对位移以及MR流体的磁化对IRDS的载波信号进行幅度调制，并通过解调器解调IRDSMRD的感应线圈感应的谐波电压来获取相对位移。在MTS 849减振器试验系统和真实的仿真系统的基础上，对所研制的IRDSMRD的线性度、灵敏度、迟滞误差和可控阻尼力等特性进行了测试。试验结果表明，所研制的IRDSMRD不仅实现了IRDS相对位移传感能力的集成，而且具有良好的IRDS相对位移传感性能和较大的可控阻尼力范围。此外，IRDS的性能不会受到一定范围内的励磁电流的影响，IRDS的阻尼力不会因载波信号而降低。IRDSMRD的实现原理和技术为降低MR阻尼器的商品化成本奠定了基础。
In this paper, an integrated relative displacement self-sensing magnetorheological damper (IRDSMRD) and the corresponding electronic system to realize the integrated relative displacement sensing and controllable damping, including the relative displacement modulator/demodulator, circuit for superposing the carrier signal for the integrated relative displacement sensor (IRDS) on the exciting current from the controllable current driver for the controllable damping and controllable current driver are developed and tested. In the developed IRDSMRD, the exciting coil is energized by the current from the controllable current driver, on which the carrier signal for the IRDS is superposed by the superposition circuit. The amplitude modulation of the carrier signal for the IRDS by the relative displacement between the piston and cylinder of the IRDSMRD and the magnetization of the MR fluid are realized through the frequency division multiplexing of the exciting coil for both the IRDS and the MR damper and the relative displacement is accessed by demodulating the induced harmonic voltage from the induction coil of the IRDSMRD by the demodulator. The characteristics of the developed IRDSMRD, including the linearity, sensitivity and hysteresis error of the IRDS and the controllable damping force are tested on the established experimental setup based on the MTS 849 shock absorber test system and the real time simulation system. The testing results indicate that the developed IRDSMRD can not only achieve the integration of the relative displacement sensing capability but also possesses good performance of the relative displacement sensing of the IRDS and the large controllable damping force range. In addition, the performance of the IRDS will not be affected by the exciting current within a certain range and the damping force will not be degraded by the carrier signal for the IRDS. The realized principle and technology of the IRDSMRD lay a foundation for reducing the commercializing cost of MR dampers.