A: "Error" is short for a manufacturing error, such as an eccentric gear tooth spacing error.
"Bad Key" is when the key sheared in the keyway, allowing the output shaft to rotate at a different speed than the brake.
Wednesday, April 15, 2009
FAQ#1: "error" and "bad key" faults
Q: On the page which shows how the results should be formatted, there is a fault for gears called "Error" and one for shaft called "Bad Key." What are the physical characteristics of these faults?
"Bad Key" is when the key sheared in the keyway, allowing the output shaft to rotate at a different speed than the brake.
"Bad Key" is when the key sheared in the keyway, allowing the output shaft to rotate at a different speed than the brake.
Saturday, April 11, 2009
Some help getting started...
Not familiar with analyzing data from rotating machinery? Here are some previously published algorithms coded in Matlab to help get you started extracting features from the data...
Friday, April 10, 2009
The challenge data is available via bittorrent!
The data is big - 420 MB - so we have released it via bittorrent. The torrent is here. Please seed! The data will also be made available on the web site.
If you - as I imagine many of you are - were born before 1984 or so, you may never have heard of the bittorrent protocol. You can learn more about the protocol here. In general, it is a peer-to-peer file sharing protocol where each person downloading the data makes it available to other peers to download concurrently. After the file is successfully downloaded, you many continue to make the data available (please do!), known as "seeding". This distributed approach makes the distribution of large amounts of data fast, efficient, and reliable.
The the µTorrent and Vuze clients are both quite good.
If you - as I imagine many of you are - were born before 1984 or so, you may never have heard of the bittorrent protocol. You can learn more about the protocol here. In general, it is a peer-to-peer file sharing protocol where each person downloading the data makes it available to other peers to download concurrently. After the file is successfully downloaded, you many continue to make the data available (please do!), known as "seeding". This distributed approach makes the distribution of large amounts of data fast, efficient, and reliable.
The the µTorrent and Vuze clients are both quite good.
Wednesday, April 1, 2009
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