Linear magnetic recording medium is a crucial and necessary component in a linear magnetic position sensing system. During the manufacturing of the magnetic medium, shape defects would often be observed due to various manufacturing processes. As a result, shape defects in the magnetic medium would alter the recording accuracy during position measurement of the magnetic reader. Thus, a flattening process is introduced for flattening of curved magnetic medium. Previous studies have demonstrated its effectiveness in flattening of magnetic medium. In this article, a further step is taken to examine the crack formation in the microstructure of the magnetic medium during flattening process to ensure the quality and recording accuracy of the magnetic medium. The experimental results have demonstrated that crack propagation would continue to grow under the influence of flattening process if crack initiation is found prior to the flattening process. Nonetheless, the measured linear position accuracy showed that the accuracy improved after the flattening process despite crack propagation occurring on the mechanical quality of the medium. In other words, the results have demonstrated that the effect of mechanical shape defects on linear position accuracy is more important than that of crack formation on the magnetic medium. Through understanding the crack formation of the magnetic medium, the accuracy of the recording medium can be improved by modification of the magnetic medium and flattening conditions.

中文翻译：

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压扁裂纹介质对线性磁编码器定位精度的影响

线性磁记录介质是线性磁位置传感系统中至关重要的必要组件。在磁介质的制造过程中，由于各种制造工艺，经常会观察到形状缺陷。结果，磁介质中的形状缺陷会在磁读取器的位置测量期间改变记录精度。因此，引入了平坦化过程以平坦化弯曲的磁介质。先前的研究已经证明了它在磁介质变平方面的有效性。本文进一步研究了磁介质在压平过程中微观结构中的裂纹形成，以确保磁介质的质量和记录精度。实验结果表明，如果在压平过程之前发现裂纹萌生，裂纹扩展将在压平过程的影响下继续增长。尽管如此，测量的线性位置精度表明，尽管在介质的机械质量上出现裂纹扩展，但在压平过程后精度有所提高。换句话说，结果表明机械形状缺陷对线性位置精度的影响比磁介质上裂纹形成的影响更重要。通过了解磁介质的裂纹形成，可以通过修改磁介质和平整条件来提高记录介质的精度。尽管如此，测量的线性位置精度表明，尽管在介质的机械质量上出现裂纹扩展，但在压平过程后精度有所提高。换句话说，结果表明机械形状缺陷对线性位置精度的影响比磁介质上裂纹形成的影响更重要。通过了解磁介质的裂纹形成，可以通过修改磁介质和平整条件来提高记录介质的精度。尽管如此，测量的线性位置精度表明，尽管在介质的机械质量上出现裂纹扩展，但在压平过程后精度有所提高。换句话说，结果表明机械形状缺陷对线性位置精度的影响比磁介质上裂纹形成的影响更重要。通过了解磁介质的裂纹形成，可以通过修改磁介质和平整条件来提高记录介质的精度。结果表明，机械形状缺陷对线性位置精度的影响比磁介质上裂纹形成的影响更重要。通过了解磁介质的裂纹形成，可以通过修改磁介质和平整条件来提高记录介质的精度。结果表明，机械形状缺陷对线性位置精度的影响比磁介质上裂纹形成的影响更重要。通过了解磁介质的裂纹形成，可以通过修改磁介质和平整条件来提高记录介质的精度。