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US 6,618,217 B2Granted
System and method for determining the position of a device
AssigneeTexas Instruments Incorporated
InventorsMark W. Heaton, David P. Magee, Michael T. DiRenzo
Life of this patent
Estimating the term…
Abstract
A position sensor includes a stationary platform and a moveable platform. The position sensor further includes at least one beam coupling the moveable platform to the stationary platform. The at least one beam includes piezoresistive material that is positioned tolprovide an indication of a movement of the moveable platform relative to the stationary platform.
Claims10
A microactuator position sensor comprising:
- a stationary platform;
- a moveable platform;
- at least one beam coupling the moveable platform to the stationary platform;
- and
- wherein the at least one beam comprises a microactuator having piezoresistive material selectably positioned to provide an indication of a movement of the moveable platform relative to the stationary platform, wherein the microactuator comprises:
- a surface comprising a first quadrant and a second quadrant, the second quadrant located diagonally from the first quadrant;
- and
- a piezoresistive material generally overlying the first and second quadrants.
5 more elements
A hard disk drive system comprising:
- a disk storage media for storing information;
- an arm operable to move over the disk storage media;
- a microactuator actuation system for positioning the arm relative to the disk storage media;
- a stationary platform coupled to an end of the arm;
- a head for recording and reproducing data in the disk storage media, the head coupled to the stationary platform by a pair of beams;
- a microactuator for positioning the head relative to the stationary platform and located on said beam;
- and
- wherein the microactuator comprise piezoresistive material positioned to provide an indication of a movement of the head relative to the stationary platform, wherein the pair of beams further comprise:
- a surface comprising a first quadrant and a second quadrant, the second quadrant located diagonally from the first quadrant;
- and
- a piezoresistive material generally overlying the first and second quadrants.
8 more elements
Dependencies are inferred from the claim text.