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首页> 外文期刊>Magnetics, IEEE Transactions on >Simulation of the Eddy Current in the Thermal Flying Height Control Slider
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Simulation of the Eddy Current in the Thermal Flying Height Control Slider

机译：热飞行高度控制滑块中涡流的仿真

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摘要

Thermal flying height control (TFC) has recently been implemented in magnetic recording disk drives to reduce the flying height at the read/write element of magnetic recording sliders. This study numerically investigates the use of AC current to control the temperature and protrusion of the TFC slider. It simulates the eddy current induced by alternating current (AC) applied to TFC heater and its effects on the flying performance of the TFC slider. The results show that the eddy current can be obviously excited in low shield when applying alternating current at the TFC heater. In the investigated TFC slider, the effects of eddy current on temperature rise and thermal protrusion are small. Moreover, the increase in frequency and amplitude of the input alternating current will increase the temperature and thermal protrusion of the slider along with the reduction in flying height. The current amplitude is more efficient than the current frequency to increase the temperature of the slider. Furthermore, the control of frequency and amplitude of alternating current applied to the heater would be necessary to achieve a stable flying height during read/write operation of the TFC slider.
机译：最近在磁记录磁盘驱动器中实现了热浮动高度控制（TFC），以减小磁记录滑块的读/写元件处的浮动高度。这项研究从数值上研究了使用交流电流控制TFC滑块的温度和伸出程度。它模拟了施加到TFC加热器上的交流电（AC）感应的涡流及其对TFC滑块飞行性能的影响。结果表明，当在TFC加热器上施加交流电时，低屏蔽层中的涡流可被明显激发。在研究的TFC滑块中，涡流对温度升高和热突起的影响很小。而且，输入交流电的频率和幅度的增加将增加滑块的温度和热突起以及飞行高度的减小。当前幅度比当前频率更有效地增加滑块的温度。此外，为了在TFC滑块的读/写操作期间实现稳定的飞行高度，必须控制施加到加热器的交流电的频率和幅度。

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