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Automated inspection of spar web in hollow monolithic structure
US8943892B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8943892-B2 |
| Application number | US-201213470125-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 11, 2012 |
| Priority date | May 11, 2012 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
Official abstract text for this publication.
A computer-controlled robotic platform with a collapsible lifting arm that positions a non-destructive inspection (NDI) sensor for scanning inside tunnel regions of a composite structure such as an integrally stiffened wing box. The lifting arm of a modified scissor lift mechanism can be collapsed to a very low height to pass through narrow sections of the integrally stiffened wing box, and also extended by more than a factor of three to reach the maximum height of the wing box tunnels. The system performs a vertical position sensing and control process that uses inverse kinematics to enable position control using data from a standard rotational encoder on the motor to determine vertical position. The system produces simulated encoder pulses that represent unit vertical displacements of a distal portion of a modified scissor lift mechanism using a forward kinematics equation in which the rotation angle of a lead screw is an input variable.
First claim
Opening claim text (preview).
The invention claimed is: 1. A mobile platform comprising: a frame; a first support block fixedly mounted to said frame; a second support block that is supported by and slidable relative to said frame; a horizontal lead screw rotatably coupled to said first support block and threadably coupled to said second support block so that said second support block will move linearly relative to said first support block when said lead screw rotates; a motor coupled to said lead scre…
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Physics · mapped topic
- G01N29/225Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8943892B2 cover?
- A computer-controlled robotic platform with a collapsible lifting arm that positions a non-destructive inspection (NDI) sensor for scanning inside tunnel regions of a composite structure such as an integrally stiffened wing box. The lifting arm of a modified scissor lift mechanism can be collapsed to a very low height to pass through narrow sections of the integrally stiffened wing box, and als…
- Who is the assignee on this patent?
- Garvey Jeffry J, Kennedy James C, Troy James J, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G01N29/225. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).