[특허]Stabilizing hand grip system

Techno Sciences, Inc.; The Regents of the University of Michigan

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Stabilizing hand grip system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F41A-033/00
미국특허분류(USC)	434/016; 434/018; 042/090; 042/094; 042/124; 042/125; 042/126
출원번호	UP-0218583 (2005-09-06)
등록번호	US-7563097 (2009-07-29)
발명자 / 주소	Lavigna, Christopher Brei, Diann Luntz, Jonathan Pathak, Anupam
출원인 / 주소	Techno Sciences, Inc. The Regents of the University of Michigan
대리인 / 주소	DLA Piper LLP (US)
인용정보	피인용 횟수 : 8 인용 특허 : 16

초록
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In a self-contained actively-controlled stabilization system within a hand-grip, all components are contained within the handgrip, and one generic handgrip can be attached to a variety of devices for a wide range of applications, thereby increasing portability, reducing weight and bulkiness, and decreasing complexity and application dependence. The handgrip includes a sensor, a controller and an actuator which preferably employs at least one shape memory alloy wire. The actuator drives a platform mechanism which may be configured such that the elevation ...

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What is claimed is: 1. A handgrip for stabilizing a hand-held device, the handgrip comprising: a handgrip housing, the handgrip housing being connectable to the hand-held device; a power supply; a controller connected to the power supply; a sensor connected to the controller, the sensor being operable to detect movement of the hand-held device along a first axis and along a second axis; an actuator connected to the controller, the actuator being operable to produce a force under the control of the controller; a platform mechanism, the platform mechanism being operable to transfer a force exerted by the actuator to a force exerted between the handgrip and the hand-held device; wherein the actuator and the platform mechanism are located within the handgrip housing; and further wherein said handgrip housing is separately detachable from said hand-held device. 2. The handgrip of claim 1, wherein the actuator comprises at least one shape memory alloy (SMA) wire. 3. The handgrip of claim 1, wherein the SMA wire is a nitinol SMA wire. 4. The handgrip of claim 1, wherein the controller is configured in a feedback configuration. 5. The handgrip of claim 1, wherein the controller is configured in a feedback/feedforward configuration. 6. The handgrip of claim 1, wherein the controller is implemented using a technique selected from the group consisting of linear quadratic Gaussian (LQG), linear quadratic regulator (LQR), H-infinity, proportional-integral-derivative (PID), and neural networks. 7. The handgrip of claim 1, wherein the platform mechanism is a direct platform mechanism. 8. The handgrip of claim 1, wherein the platform mechanism comprises a base; an azimuth actuator plate disposed over and engageable with an upper horizontal surface of the base such that the azimuth actuator plate may move in a horizontal direction; an elevation actuator plate engageable with a vertical member of the base such that the elevation actuator plate may move in a vertical direction but is constrained from moving in a horizontal direction; an top plate engageable with the elevation actuator plate and the azimuth actuator plate such that the top plate may move in a horizontal direction with respect to the elevation actuator plate and may move in a vertical direction with respect to the azimuth actuator plate; wherein the azimuth actuator plate is attached to at least a first SMA wire for movement in a horizontal direction with respect to the base and wherein the elevation actuator plate is attached to at least a second SMA wire for movement in a vertical direction with respect to the base. 9. The handgrip of claim 8, wherein the azimuth actuator plate further comprises an upstanding pin, the pin being positioned to pass through a slot in the elevation actuator plate and engage a hole formed in the top plate, whereby the top plate is constrained from moving in a horizontal direction with respect to the bottom plate but is not constrained from moving in a vertical direction with respect to the bottom plate. 10. The handgrip of claim 1, wherein the platform mechanism is a rotational platform. 11. The handgrip of claim 10, wherein the rotational platform is a bellows platform. 12. The handgrip of claim 11, wherein the bellows platform comprises a hollow cylinder attached to a flexible bellows, the hollow cylinder further being attached to a first SMA wire on a first side of the cylinder and a second SMA wire on a second side of the cylinder. 13. The handgrip of claim 10, wherein the rotational platform is a leaf spring platform comprising a leaf spring, a first SMA wire attached to a first side of the leaf spring and a second SMA wire attached to a second side of the leaf spring. 14. The handgrip of claim 13, further comprising a third SMA wire oriented parallel to a major axis of the leaf spring. 15. The handgrip of claim 13, further comprising a third SMA wire oriented perpendicular to a major axis of the leaf spring. 16. The handgrip of claim 1, wherein the platform mechanism comprises an outer grip slidably engageable with the handgrip body; a first SMA wire; an elevation lever pivotably attached to an inner surface of the handgrip body, with lever being positioned such that it bears on the outer grip when the first SMA wire is activated, whereby relative movement between the slidable outer grip and the inner surface of the handgrip body is produced when the first SMA wire is activated. 17. The handgrip of claim 16, further comprising a mount slidably engaged with an upper portion of an inner surface of the handgrip body a second SMA wire attached at one end to a lower portion of the inner surface of the handgrip body; a second lever pivotably attached to the amount, a second end of the second SMA wire being attached to the second lever; a third SMA wire attached at one end to a lower portion of the inner surface of the handgrip body; and a third lever pivotably attached to the mount, a second end of the third SMA wire being attached in the third lever; wherein the second and third levers are positioned such that they contact a portion of the inner surface of the handgrip body, thereby causing relative movement between the mount and the hand-held device when either of the second and third SMA wires are activated. 18. The handgrip of claim 1, wherein the sensor comprises a first gyro oriented to detect movement along the first axis and a second gyro oriented to detect movement along a second axis. 19. The handgrip of claim 1, wherein the controller, the sensor, and the power supply are located within the handgrip housing. 20. The handgrip of claim 1, wherein the actuator converts electrical energy to a mechanical force. 21. The handgrip of claim 1, wherein the actuator converts electrical energy to a mechanical force. 22. A method for stabilizing a hand-held device comprising the steps of: detecting a motion of the hand-held device along a first axis and along a second axis using a sensor mounted in a handgrip housing, the motion resulting from an undesirable force exerted on the hand-held device by an operator of the hand-held device; calculating a force necessary to counteract the motion resulting from the undesirable force using a controller; controlling an actuator to produce a stabilizing force that counteracts the undesirable force; transferring the stabilizing force produced by the actuator to a force exerted between the handgrip and the hand-held device; wherein the controller, the sensor, and the actuator are located within a handgrip housing attached to the hand-held device; wherein said handgrip housing is separately detachable from said hand-held device. 23. The method of claim 22, wherein a power source for the actuator is also located within the handgrip housing. 24. The method of claim 22, wherein the actuator comprises at least one SMA wire.

이 특허에 인용된 특허 (16)

이 특허를 인용한 특허 피인용횟수: 8

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Stabilizing hand grip system

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이 특허에 인용된 특허 (16)

이 특허를 인용한 특허 피인용횟수: 8

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Stabilizing hand grip system

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이 특허에 인용된 특허 (16)

이 특허를 인용한 특허 피인용횟수: 8

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IPC 상세정보(version : 201201)

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