准零刚度绝对位移传感器设计及运用

摘要/Abstract

摘要： 设计了一种准零刚度（QZS）绝对位移传感器。分析了QZS传感器的结构参数，得到了保证QZS传感器特性的参数要求。给定不同激励，对QZS传感器测量精度及响应速度进行了检测，并分析总结QZS传感器的一些不足及其使用范围。将QZS 传感器运用于Stewart平台的速度反馈，通过谐波平衡法得到平台z轴、绕x轴、绕y轴方向的幅频特性曲线。仿真结果表明，QZS传感器能够有效地测量平台z轴、绕x轴、绕y轴方向的绝对位移。

关键词: 准零刚度, 绝对位移, 传感器, Stewart平台

Abstract: A QZS absolute displacement sensor was designed here in. The structural parameters of the QZS systems were first analyzed to ensure that the system was staying at stable equilibriums. Given the different incentives, the precisions and response speeds of the QZS sensors were measured. Moreover, shortages of the QZS sensors were studied and potential solutions were discussed. The QZS sensor was applied to the Stewart platform for speed feedback. Applying the harmonic balance method, the frequency responses of the platform were obtained in the direction of z axis, around the x axis and y axis. The QZS sensors are shown to be a useful devices for absolute displacement measurements in the direction of z axis, around the x axis and y axis.

Key words: quasi zero stiffness（QZS）, absolute displacement, sensor, Stewart platform

中图分类号:

TP212.9

何剑锋;邓兆祥;妥吉英. 准零刚度绝对位移传感器设计及运用[J]. 中国机械工程.

HE Jianfeng;DENG Zhaoxiang;TUO Jiying. Design and Applications of a QZS Absolute Displacement Sensor[J]. China Mechanical Engineering.

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