Improvement of the Static and Dynamic Characteristics of Magnetic Head Sliders by Optimum Design
Author:
Hashimoto Hiromu1, Hattori Yasuhisa2
Affiliation:
1. Vice Dean, School of Engineering 2. Department of Mechanical Engineering, Tokai University, 1117 Kilakaname, Hiratsuka, Kanagawa 259-1292, Japan
Abstract
The aim of this paper is to develop a general methodology for the optimum design of magnetic head sliders in improving the spacing characteristics between a slider and disk surface under static and dynamic operating conditions of hard disk drives and to present an application of the methodology to the IBM 3380-type slider design. To generate the optimal design variables, the objective function is defined as the weighted sum of the minimum spacing, the maximum difference in the spacing due to variation of the radial location of the head, and the maximum amplitude ratio of the slider motion. Slider rail width, taper length, taper angle, suspension position, and preload are selected as the design variables. Before the optimization of the head, the effects of these five design variables on the objective function are examined by a parametric study, and then the optimum design variables are determined by applying the hybrid optimization technique, combining the direct search method and successive quadratic programming. From the obtained results, the effectiveness of optimum design on the spacing characteristics of magnetic heads is clarified. [S0742-4787(00)03701-2]
Publisher
ASME International
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference17 articles.
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, 1983, “Flying Characteristics of the Zero-Load Slider Bearing,” ASME J. Lubr. Technol. 105, No. 3, pp. 484–490. 4. White, J. W., 1984, “Flying Characteristics of the 3370-Type Slider on a 5 1/4-inch disk—Part I: Static analysis,” ASLE SP-16, Tribology and Mechanics of Magnetic Storage Systems, 1, pp. 72–76. 5. White, J. W., 1986, “An Air Bearing Slider with Uniform Flying Height and Fast Take-off Characteristics,” ASLE SP-21, Tribology and Mechanics of Magnetic Storage Systems, 3, pp. 95–101.
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