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Multi-stage actuation for an active materials-based actuator

A technology of active materials and actuators, applied in the direction of machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve problems such as high-cost systems that increase complexity

Inactive Publication Date: 2014-08-20
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this results in a costly system with increased complexity

Method used

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  • Multi-stage actuation for an active materials-based actuator
  • Multi-stage actuation for an active materials-based actuator
  • Multi-stage actuation for an active materials-based actuator

Examples

Experimental program
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Embodiment Construction

[0025] Referring to the drawings, wherein like reference numerals correspond to the same or similar parts in the various figures, and from Figure 1-3 Initially, mechanical system 10 includes actuator 12 coupled to load 14 . Actuator 12 applies a first or preload force F P to the load 14, and then apply a second or prime mover F M onto the load 14.

[0026] The actuator 12 is defined herein as operable to exert or apply a motive force F M Any device to the load 14 in order to provide a motive force sufficient to impart the desired motion to the load 14, such as to move the load 14 through a predetermined distance of motion "d" in a specified time period or interval. As used herein, the term "motive force" refers to a force sufficient to produce a desired motion. Motion includes, but is not limited to, the distance traveled by the load 14, the time the load is traveled and any acceleration or deceleration profile of the load 14 during that time. Actuator 12 may be configur...

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PUM

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Abstract

A mechanical system for selectively moving a load a motive distance comprises an actuator operable for applying a force to the load. The actuator includes an active material element having a variable property. A controller is connected to the actuator and operable for sending a first stimulus to the actuator to shift the actuator from a first state to a second state. The second state is associated with detecting the onset of actuation for the actuator. The controller is operable to send the priming stimulus level to the actuator to shift it to the primed state. The actuator includes a priming device operable for determining the onset of actuation of the first active material element.

Description

technical field [0001] The invention relates to actuators with active material elements. Background technique [0002] In mechanical systems, pressurized fluid, electricity, or other energy sources may be used to impart a motive force to a load, wherein the motive force is capable of moving the load a predetermined distance of motion. Various rotary or linear actuation devices or actuators can direct motive force in a mechanical system in a precise manner as needed in order to achieve a desired end result. However, changes in environmental conditions, such as temperature, and changes in the physical characteristics or characteristics of the load can affect the overall performance or response of the mechanical system. [0003] Thus, system behavior is expected to remain consistent over a wide range of operating conditions, including temperature changes, age of the system, small changes in loads, and the like. A key point of consistent performance, especially for systems wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03G7/06
CPCF03G7/065
Inventor N.D.曼凯姆R.J.斯库基斯N.W.平托四世
Owner GM GLOBAL TECH OPERATIONS LLC