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resources:eval:user-guides:circuits-from-the-lab:cn0368 [30 Mar 2015 20:47]
Neil Wilson [Single Temperature Calibration]
resources:eval:user-guides:circuits-from-the-lab:cn0368 [30 Mar 2015 21:37]
Neil Wilson [Overview]
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 The circuit is ideal for applications where high speed, accurate, non-contact angle and length measurements are critical such as brushless DC motor control. The circuit is ideal for applications where high speed, accurate, non-contact angle and length measurements are critical such as brushless DC motor control.
  
 +{{ :​resources:​eval:​user-guides:​circuits-from-the-lab:​cn0368:​cn0368.jpg?​600 |}}
 ===== General Setup ===== ===== General Setup =====
   *One [[http://​www.analog.com/​CN0368|EVAL-CN0368-SDPZ]] Evaluation Board   *One [[http://​www.analog.com/​CN0368|EVAL-CN0368-SDPZ]] Evaluation Board
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   - Press '​**//​Click to Stop//​**'​ when finished.   - Press '​**//​Click to Stop//​**'​ when finished.
 ==== Multiple Temperature Calibration ==== ==== Multiple Temperature Calibration ====
 +The Multiple Temperature Calibration procedure is a method of compensating for temperature effects experienced by the amplifier and ADC.  The temperature coefficients and offsets are calculated to provide a more accurate magnetic field angle and system response. 
 +  - Select //​**Multiple Temperature Calibration**//​ from the drop down menu. 
 +  - Place the hardware in a temperature controlled environment at the desired T1. 
 +  - {{:​resources:​eval:​user-guides:​circuits-from-the-lab:​cn0368:​multiple_temperature_calibration_1.png?​600|}} 
 +  - Press //​**Ok**//​. 
 +  - {{:​resources:​eval:​user-guides:​circuits-from-the-lab:​cn0368:​multiple_temperature_calibration_2.png?​600|}} 
 +  - Rotate the stimulus through 360 degrees while VSIN_Offset_T1 and VCOS_Offset_T1 are calculated. 
 +  - Press //​**Ok**//​. 
 +  - {{:​resources:​eval:​user-guides:​circuits-from-the-lab:​cn0368:​multiple_temperature_calibration_3.png?​600|}} 
 +  - Place the hardware in a temperature controlled environment at the desired T2. 
 +  - Press //​**Ok**//​. 
 +  - {{:​resources:​eval:​user-guides:​circuits-from-the-lab:​cn0368:​multiple_temperature_calibration_4.png?​600|}} 
 +  - Rotate the stimulus through 360 degrees while VSIN_Offset_T2 and VCOS_Offset_T2 are calculated. 
 +  - Press //​**Ok**//​. 
 +  - Press //**Sample Data**// to observe the magnetic field angle results corrected for temperature and offset effects.
 ==== Dynamic Calibration ==== ==== Dynamic Calibration ====
 The Dynamic Calibration method actively calculates VSIN_Offset and VCOS_Offset as the magnetic stimulus rotates through 360 degrees. ​ The software then subtracts these offsets in real time.  This method is simpler than the Single Temperature Calibration and Multiple Temperature Calibration and can be implemented faster, with more ease. The Dynamic Calibration method actively calculates VSIN_Offset and VCOS_Offset as the magnetic stimulus rotates through 360 degrees. ​ The software then subtracts these offsets in real time.  This method is simpler than the Single Temperature Calibration and Multiple Temperature Calibration and can be implemented faster, with more ease.
resources/eval/user-guides/circuits-from-the-lab/cn0368.txt · Last modified: 29 Jul 2021 07:52 by Harvey John De Chavez