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resources:eval:user-guides:inertial-mems:imu:adis16448 [26 Jan 2014 23:29]
Mark Looney [PHYSICAL SETUP]
resources:eval:user-guides:inertial-mems:imu:adis16448 [10 Jul 2018 20:45] (current)
Motoko Hunt [In-run Bias Stability]
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 {{:​resources:​eval:​user-guides:​inertial-mems:​imu:​448-hook-up-with-ep2.png?​nolink&​400|}} {{:​resources:​eval:​user-guides:​inertial-mems:​imu:​448-hook-up-with-ep2.png?​nolink&​400|}}
  
-===== ADIS1644x/PCB BREAKOUT BOARD ===== +===== ADIS1644X/FLEX BREAKOUT BOARD ===== 
-For those who are on tight timeline, connecting ​the ADIS16445 or [[adi>​ADIS16448|ADIS16448]] to an embedded controller will provide the most flexibility in developing application firmware ​and will more closely reflect ​the final system design. The [[adi>​en/​mems-sensors/​mems-inertial-measurement-units/​adis16448/​products/​EVAL-ADIS16448/​eb.html|ADIS16448/PCBZ]] is the breakout board for the [[adi>​ADIS16448|ADIS16448]] and may provide assistance in the process of hooking it up to an existing embedded processor system. The ADIS16445 has not be released yetbut it will also provide a similar function, using the part number: ​ADIS16445/​PCBZ. For more information on the [[adi>​en/​mems-sensors/​mems-inertial-measurement-units/​adis16448/​products/​EVAL-ADIS16448/​eb.html|ADIS16448/​PCBZ]] breakout boardscheck out the following link: [[adi>​en/​mems-sensors/​mems-inertial-measurement-units/​adis16448/​products/​EVAL-ADIS16448/​eb.html|ADIS16448/​PCB Breakout Board Web Page]].+The ADIS1644X/​FLEX provides ​direct connection path between any of the ADIS1644x models ​and J4 on the EVAL-ADIS evaluation system This accessory used to be part of the ADIS16334/PCBZ, ADIS16445/​PCBZ ​and ADIS16448/​PCBZ ​kitsbut is now available for purchase as a separate accessory  
 + 
  
 ===== EVAL-ADIS: PC EVALUATION ===== ===== EVAL-ADIS: PC EVALUATION =====
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 [[adi>​EVAL-ADIS|EVAL-ADIS]] [[adi>​EVAL-ADIS|EVAL-ADIS]]
  
-[[adi>en/​mems-sensors/​mems-inertial-measurement-units/​adis16448/​products/​EVAL-ADIS16448/​eb.html|ADIS16448/​PCBZ]] or ADIS16445/​PCBZ+[[adi>​adis16448|ADIS16448BMLZ]] or [[adi>​adis16445|ADIS16445BMLZ]]
  
 +[[adi>​en/​design-center/​evaluation-hardware-and-software/​evaluation-boards-kits/​EVAL-ADIS1644X.html|ADIS1644X/​FLEX]]
 ===== SYSTEM REQUIREMENTS ===== ===== SYSTEM REQUIREMENTS =====
 Windows XP, Vista, 7 Windows XP, Vista, 7
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 {{:​resources:​eval:​user-guides:​inertial-mems:​imu:​adis16488-gyro-accel-noise-test-01.png?​nolink&​500|}} {{:​resources:​eval:​user-guides:​inertial-mems:​imu:​adis16488-gyro-accel-noise-test-01.png?​nolink&​500|}}
 ====In-run Bias Stability==== ====In-run Bias Stability====
-For the [[adi>​ADIS16448|ADIS16448]] gyroscopes and acceleroemeters,​ "​In-run Bias Stability"​ refers to the best resolution available, when averaging sequetital, time domain data.  This has a direct impact on the accuracy of a bias correction and therefore, has a direct impact on angle measurement drift. ​ In reviewing the Allan Variance curve for the gyroscopes ([[adi>http://​www.analog.com/​static/​imported-files/​data_sheets/​ADIS16448.pdf#​Page=08|Figure 7]]), the minima of the the best performance curve (//mean - 1 sigma//) is associated with an integration time of ~100 seconds. However, many of the units (from //mean// and //mean + 1 sigma// curves)) start approaching their minima at ~40 seconds. ​ While selecting the best settings may require some iteration, this exercise starts with an integration of 40 seconds, an output data rate of 51.2 SPS (SMPL_PRD = 0x0401) and a dyanmic range of +/-250 degrees/​second (SENS_AVG = 0x0104).+For the [[adi>​ADIS16448|ADIS16448]] gyroscopes and acceleroemeters,​ "​In-run Bias Stability"​ refers to the best resolution available, when averaging sequetital, time domain data.  This has a direct impact on the accuracy of a bias correction and therefore, has a direct impact on angle measurement drift. ​ In reviewing the Allan Variance curve for the gyroscopes ([[adi>​static/​imported-files/​data_sheets/​ADIS16448.pdf#​Page=08|Figure 7]]), the minima of the the best performance curve (//mean - 1 sigma//) is associated with an integration time of ~100 seconds. However, many of the units (from //mean// and //mean + 1 sigma// curves)) start approaching their minima at ~40 seconds. ​ While selecting the best settings may require some iteration, this exercise starts with an integration of 40 seconds, an output data rate of 51.2 SPS (SMPL_PRD = 0x0401) and a dyanmic range of +/-250 degrees/​second (SENS_AVG = 0x0104).
  
 Here is a snapshot of the **Data Access** and **Data Capture** screens, which configures the software to take 50 sets of z-axis gyroscope data, that contain 40-second time records each, at a read rate of 51.2SPS. Here is a snapshot of the **Data Access** and **Data Capture** screens, which configures the software to take 50 sets of z-axis gyroscope data, that contain 40-second time records each, at a read rate of 51.2SPS.
resources/eval/user-guides/inertial-mems/imu/adis16448.txt · Last modified: 10 Jul 2018 20:45 by Motoko Hunt