Hi,
My company uses the ASM330LHH for dead-reckoning applications and we are trying to improve the performace of the gyro with our own calibration of rotation sensitivity. After calibration, we want the gyro sensitivity accuracy to be 0.1 % or better over -20 to 70 C. I know this may not be easy or feasible, but we still want to get as close as possible. Our current calibration procedure uses an Ideal Aerosmith rate table that we try to set to 100 dps +/- 0.01 %, but we're running into a ton of issues getting an accurate enough speed. I'm hoping someone can help show us a better way!
Right now, our rate table often misses the set rate by much more than 0.01 % or the rate will oscillate around the set point by much more than 0.01 %. We have tried using the rotation rate readout of the rate table, but that is showing its own set of difficulties. Is this what folks normally do for high-accuracy sensitivity calibration? Or is an ultra-high accuracy gyro normally used as reference for the rotation rate? If so, could anyone recommend a gyro part number? We would be okay spending several thousands on a FOG or RLG, but I was hoping to get feedback from an expert before making such a large purchase.
Thank you!
Matt
