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Vibration Analysis of HDD Actuator with Equivalent Finite Element Model of VCM Coil  

Kim, Dong-Woohn (Graduate School, Department of Mechanical Engineering, Yonsei University)
Lee, Jin-Koo (Engineer, MANDO Corporation)
Park, No-Cheol (Center for Information Storage Device(CISD), Yonsei University)
Park, Young-Pil (Department of Mechanical Engineering, Yonsei University)
Publication Information
Journal of Mechanical Science and Technology / v.17, no.5, 2003 , pp. 679-690 More about this Journal
Abstract
As the rate of increase in areal density of the HDD has accelerated, dynamic characteristics of the HDD actuator need to be improved with respect to the performance of the tracking servo and shock transmission. Therefore, it is important to analyze the vibration characteristic of the HDD actuator that consists of the VCM part, E-block and pivot bearing. In this paper, vibration modes of the HDD actuator are investigated the using finite element and experimental modal analyses methods. To develop a detailed finite element model, finite element models of each components of the actuator assembly are constructed and tuned to the results of the EMA. The VCM coil is modeled as an equivalent finite element model that has an orthotropic material property using auto-model updating program. Auto-model updating program with improved sensitivity based iterative method is applied to build a detailed finite element model using the result of the EMA. A detailed finite element model of the HDD actuator is then constructed and analyzed.
Keywords
HDD(Hard Disk Drive); Actuator; Dynamic Characteristics; Vibration Mode; Finite Element Model Updating; Sensitivity Analysis; Finite Difference Method;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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