Dynamics of glide head in the proximity contact regime
Dynamics of glide head in the proximity contact regime
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接近接触状态下滑翔头的动力学
DOI：
10.1109/20.800861
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
R. Sundarain
中科院分区：
文献类型：
--
作者：
W. Yao;D. Kuo;R. Sundarain
磁盘的固有滑动能力通常通过声发射（AE）或压电换能器（PZT）传感器的滑动雪崩测试来评估，并且被发现是粗糙度高度分布的函数。在这项工作中，在近接触政权的滑翔头的动力学进行了研究。采用激光多普勒测振仪（LDV）和压电陶瓷（PZT）技术对磁头在不同粗糙度的磁盘上触地过程中的动态特性进行了监测。结果表明，滑动雪崩读数可以受到空气轴承的崩溃。PZT和LDV响应在滑动雪崩过程中的比较表明这两种方法之间的一般协议。
The intrinsic glide capability of a magnetic disk is typically assessed by the glide avalanche test with an acoustic emission (AE) or a piezoelectric transducer (PZT) sensor and is found to be a function of asperity height distribution. In this work, the dynamics of a glide head in the near contact regime is investigated. Both the laser Doppler vibrometer (LDV) and PZT techniques are used to monitor the head dynamics during the touchdown process on disks with different roughness. It is shown that the glide avalanche readings can be affected by the collapse of the air bearing. The comparison of the PZT and LDV responses during the glide avalanche process indicates a general agreement between these two methods.