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Unread 05-11-2003, 23:08
Burgabot Burgabot is offline
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#1067 (Junior Billikens)
 
Join Date: Nov 2003
Location: St. Louis
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Actually, I do have another question. Originally, I was going to measure angular velocity by integrating angular accleration, obtained from two linear accelerometers placed a certain distance apart. I did this because the gyro can only measure angular velocities of ±75 degrees/second or less, and runs into trouble at anything higher than that. However, I realized that this will be far less accurate than using a gyro sensor.

Basically, what it comes down to is that there's a tradeoff between accuracy (the gyro) and range (the two acclerometers). Therefore, I came up with a compromise that I hope will work. In every program cycle, I'll get the angular speed as determined by the gyro. If it turns out to be 75 degrees/second (which I'm assuming is what it'll return if the speed is higher than that), I'll use the accelerometer data instead of the gyro data to determine the angular velocity. That way, I'll have the accuracy of the gyro at normal speeds and the range of the accelerometer arrangement at high angular speeds. Think this will work? Anything I have to watch out for?
 


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