设计并研发了一种磁流变阻尼器性能检测系统，该系统可以完成不同激励下的磁流变阻尼器阻尼力的示功试验和速度特性试验。对电液位置伺服系统进行研究，提出一种基于幅值修正的实时迭代控制算法，实验表明，该控制算法能有效改善较高频的幅频特性下降问题，系统能复现高精度高频宽的正弦位移信号；选择Lord公司型号为RD-8041-1的磁流变阻尼器进行性能测试，测试结果表明，此系统能够有效测试磁流变阻尼器的滞回特性曲线，为磁流变阻尼器动力学模型的研究提供前提。
Abstract
A detecting system for performance of MR dampers was designed and developed. It could perform damping force-displacement tests and velocity feature tests of a MR damper under different excitations. Its electro-hydraulic position servo system was studied, a new real-time iteration control algorithm base on amplitude correction was proposed. Test results showed that this new control algorithm can effectively improve the amplitude-frequency characteristic dropping problem under higher frequency to reproduce sine displacement signals with higher accuracy and higher band width. Furthermore, a performance test for a LORD RD-8041-1 MR damper was conducted with this detecting system. Test results showed that this system can effectively detect the MR damper’s hysteretic characteristics curve to provide a premise for studying the dynamic model of the MR damper.
关键词
磁流变阻尼器 /
性能检测 /
电液伺服系统 /
幅值修正
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Key words
magneto-rheological (MR) damper /
performance tests /
electro-hydraulic servo system /
amplitude correction
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