随着硬盘的磁密度越来越高,数据存取速度越来越快,要求硬盘的驱动速度更快,寻道精度更高。在这种苛刻的工作条件下,即使是微小的机械振动也会产生数据的读写错误。为了提高其动态响应特性,重点研究采用基于动态柔度的拓扑方法进行硬盘...随着硬盘的磁密度越来越高,数据存取速度越来越快,要求硬盘的驱动速度更快,寻道精度更高。在这种苛刻的工作条件下,即使是微小的机械振动也会产生数据的读写错误。为了提高其动态响应特性,重点研究采用基于动态柔度的拓扑方法进行硬盘驱动臂的拓扑形态设计,包括硬盘驱动臂拓扑设计的建模、灵敏度分析、拓扑优化的过程以及对优化结果的分析。通过研究,得到几种新的硬盘驱动臂的结构拓扑形态,发现它们与静态拓扑和基于频率的拓扑设计结果具有一定的局部相似性,这表明基于动态响应的拓扑设计具有更好的综合性能。文中提出的方法为进一步改善HDD(hard disk drive)驱动臂的动态性能提供一种新的途径。展开更多
This paper presents the study of vibration in each element of hard disk drive, especially the resonance of the actuator arm. The resonance occurs in hard disk drive is considered as one of the quality controlled param...This paper presents the study of vibration in each element of hard disk drive, especially the resonance of the actuator arm. The resonance occurs in hard disk drive is considered as one of the quality controlled parameter. The main purpose of the research is to investigate the relationship between the pivot bearing assembly process and the natural frequency of the actuator arm. The experiment is designed using the information from the hard disk drive manufacturer. The selected pivot bearing assembly process parameters have been controlled. The modal analysis of the assembled actuator arms has been done. The experiment results show the relationship of the specific process parameters and some of the actuator arm＇s modal frequency. The results also show that the affected vibration mode is the torsion mode only.展开更多
文摘随着硬盘的磁密度越来越高,数据存取速度越来越快,要求硬盘的驱动速度更快,寻道精度更高。在这种苛刻的工作条件下,即使是微小的机械振动也会产生数据的读写错误。为了提高其动态响应特性,重点研究采用基于动态柔度的拓扑方法进行硬盘驱动臂的拓扑形态设计,包括硬盘驱动臂拓扑设计的建模、灵敏度分析、拓扑优化的过程以及对优化结果的分析。通过研究,得到几种新的硬盘驱动臂的结构拓扑形态,发现它们与静态拓扑和基于频率的拓扑设计结果具有一定的局部相似性,这表明基于动态响应的拓扑设计具有更好的综合性能。文中提出的方法为进一步改善HDD(hard disk drive)驱动臂的动态性能提供一种新的途径。
文摘This paper presents the study of vibration in each element of hard disk drive, especially the resonance of the actuator arm. The resonance occurs in hard disk drive is considered as one of the quality controlled parameter. The main purpose of the research is to investigate the relationship between the pivot bearing assembly process and the natural frequency of the actuator arm. The experiment is designed using the information from the hard disk drive manufacturer. The selected pivot bearing assembly process parameters have been controlled. The modal analysis of the assembled actuator arms has been done. The experiment results show the relationship of the specific process parameters and some of the actuator arm＇s modal frequency. The results also show that the affected vibration mode is the torsion mode only.
