硬盘加载/卸载过程的动力学仿真及参数优化  

Simulation of load/unload process and parameter optimization for a hard disk drive

作　　者：魏浩东[1] 敖宏瑞[1] 姜洪源[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2011年第1期74-78,共5页Journal of Harbin Institute of Technology

基　　金：哈尔滨工业大学优秀青年教师资助项目(HITQNJS.2008.009)

摘　　要：为研究硬盘驱动器斜坡加载/卸载过程中,磁头/盘界面及磁头悬臂/支承件接触面的摩擦学及动力学特性,建立系统运动微分方程,提出基于PDE的超薄气体润滑气膜力求解方法,并对卸载过程中的浮动块/悬臂及斜坡/提升臂的接触特性进行仿真,分析提升臂刚度和提升臂/斜坡的接触刚度对作用面接触变形、接触力及浮动块动态特性的影响,以及斜坡过渡圆角对运动稳定性的影响.结果表明:基于PDE的气膜力求解方法具有足够的求解精度;提升臂刚度、接触面刚度及斜坡过渡圆角是影响硬盘加载/卸载过程磁头滑动块稳定性的主要因素.研究结果为硬盘磁头/盘界面的改进和L/UL技术的进一步应用提供了依据.The tribological and dynamic characteristics load/unload （L/UL） process for hard disk drives were of the head/disk and lift-tap/ramp interfaces during modeled. The equation of motion for the L/UL system was proposed, in which the air bearing force at the ultra-thin film lubrication was solved by using a PDE-based method. The contacts between the slider and suspension, as well as the lift-tab/ramp interface, were simulated to analyze the effect of the stiffness of lift-tab, the stiffness at the hft-tab/ramp, interface, and： the ramp angle on the stability of the suspension slider. It is indicated that PDE-based method has enough accuracy for the description of the air bearing force. The stability of the slider is determined by the suspension stiffness, contact stiffness at the interfaces and the ramp angle. These results are beneficial to improvement of the slider/disk interface and further application of L/UL technology.

关 键 词：加载/卸载 硬盘驱动器 接触特性 空气轴承力 

分 类 号：O343.3[理学—固体力学]