Internal accelerometer for improved servo performance and shock sensing on high performance disc drive heads
AssigneeSeagate Technology LLC
InventorsMark J. Schaenzer, Zine-Eddine Boutaghou, He Huang
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Abstract
A data storage system head slider and a method of making the same are disclosed. The head slider includes a slider body and an accelerometer formed integrally with the slider body. In preferred embodiments, the accelerometer includes a cavity formed in the slider body. A structural beam extends over the cavity such that the structural beam deflects in response to acceleration of the head slider. A piezo transducer formed on the structural beam provides a transducer output signal indicative of a magnitude of the acceleration of the head slider.
Claims11
A data storage system head slider comprising:
- a slider body;
- and
- an accelerometer formed integrally with the slider body, wherein the accelerometer comprises:
- a cavity formed in the head slider;
- a structural beam formed in the head slider and extending into the cavity such that the structural beam deflects in response to acceleration of the head slider;
- and
- a piezo transducer formed on the structural beam such that deflection of the structural beam within the cavity causes the piezo transducer to provide a transducer output signal indicative of a magnitude of the acceleration of the head slider.
A magnetic head slider for use in a magnetic data storage system, the magnetic head slider comprising:
- a slider body;
- an accelerometer formed on the slider body and detecting acceleration of the magnetic head slider relative to a surface of a magnetic disc, wherein the accelerometer comprises:
- a cavity formed in the slider body;
- a structural beam formed on the slider body such that it extends over the cavity and can deflect in response to acceleration of the head slider;
- a piezo transducer formed on the structural beam such that deflection of the structural beam causes the piezo transducer to provide a transducer output signal indicative of a magnitude of the acceleration of the head slider;
- and
- a first magnetic transducer formed on the slider body.
Dependencies are inferred from the claim text.