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Non-contact sheet conductivity measurements implementing a rotating magnetic braking system
US9103653B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103653-B2 |
| Application number | US-201213533187-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2012 |
| Priority date | Jun 21, 2012 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A method for calculating sheet conductivity with an absolute working distance measurement includes selecting a motor frequency f M for a motor having a first magnet disposed on a shaft, tuning a motor voltage V M for the motor, measuring a no-load power of the motor, inserting a material adjacent the first magnet, tuning the motor frequency to f M , measuring the on-load power of the motor, measuring the absolute working distance and calculating the sheet conductivity of the material.
First claim
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What is claimed is: 1. A method for performing a non-contact resistivity measurement of a sheet of material to be measured, the method comprising: moving, with a motor, a magnet in one of a linear direction and a rotational direction; determining, with a power measuring device, a first power value used by the motor in moving the magnet when in proximity to the sheet of material, and measuring a second power value used by the motor in moving the magnet when not in proximity to th…
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- What does patent US9103653B2 cover?
- A method for calculating sheet conductivity with an absolute working distance measurement includes selecting a motor frequency f M for a motor having a first magnet disposed on a shaft, tuning a motor voltage V M for the motor, measuring a no-load power of the motor, inserting a material adjacent the first magnet, tuning the motor frequency to f M , measuring the on-load power of the motor, m…
- Who is the assignee on this patent?
- Gunawan Oki, IBM
- What technology area does this patent fall under?
- Primary CPC classification G01B7/087. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 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).