Title:
磁気ヘッド/ディスク検査器内の高精度位置決め機構の動的特性を改良するための装置及び方法
Document Type and Number:
Japanese Patent JP4118441
Kind Code:
B2
Abstract:
An improved fine positioning mechanism in a magnetic head/disk tester includes a primary position actuator and a primary body that supports a read/write head to be tested, and an auxiliary body and auxiliary actuator. Both actuators operate contemporaneously and in mutually opposite directions. The masses of both bodies and the stiffnesses of both actuators are selected so that a ratio of the stiffness of the actuator to the mass of the body in the primary system is equal to a ratio of the stiffness of the actuator to the mass in the auxiliary system. In addition, the masses of both bodies and the expansion coefficients of both actuators are selected so that a product of the mass of the body with the expansion coefficient of the actuator in the primary system is equal to a product of the mass of the body with the expansion coefficient of the actuator in the auxiliary system. In this manner, forces operating on both bodies are equal in magnitude and opposite in direction and therefore counterbalance each other when the same control voltage is applied to both actuators. This, in turn, eliminates or reduces vibrations in the slide supporting the actuators and therefore the head-positioning settling time is significantly reduced.
Inventors:
Nayham Gazick
Ufuku Colorslan
Sem kirissi
Ufuku Colorslan
Sem kirissi
Application Number:
JP7338899A
Publication Date:
July 16, 2008
Filing Date:
March 18, 1999
Export Citation:
Assignee:
Gazic Technical Enterprises
International Classes:
G11B19/02; G11B5/012; G11B5/455; G11B21/02; G11B21/10
Domestic Patent References:
| JP5139012A | ||||
| JP5294988A | ||||
| JP5242501A | ||||
| JP1238450A | ||||
| JP1225380A | ||||
| JP6251570U |
Attorney, Agent or Firm:
Motohiro Kurauchi
Hiroshi Kazama
Hiroshi Kazama