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noise accuracy dual axis accelerometer

Hi

I am doing calibration on accelerometer of analog providing dual axis acceleration to measure tilt angle of sensor.

Based on spec sheet from analog, the sensor should be in linear equation V=Ka+B

V=Voltage output

K=Linear sensitivity

a=acceleration of axis

B=Bias voltage.

 

However, i turn the sensor with known angle, i get the voltage. Plotting the graph of Voltage versus acceleration, i am not able to get linear curve of V=Ka +B, but nonlinear graph.

 

How can i determine the non linear error and resolution from the newly plotted graph in labview?i have collected data. and i wish to do regression analysis. How i can do it in labview?

After getting the nonlinear regression, how can i know my new model (new equation) has improved error and resolution?

Can someone ple help

 

your kindness is Much appreciated

 

 

Regards

 

 

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