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Re: Three gyros - is it possible?
If you're talking about pan/tilt of a camera mount, you might consider using servos to run it. With servos, you can tell it what angle to go to and it just does it for you. It has the feedback built in.
The gyro returns an analog value that is the rate of rotation. What robots usually need is the angle or heading. To change the rate of angle change to the angle, you need to integrate the rates over time coming from the gyro. Integration is another name for summing (or accumulating) the values. The accumulator is some hardware in the FPGA for summing the rate values and producing an angle. By using FPGA hardware, the program isn't burdened with rapidly reading the values and summing them.
Brad
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Brad Miller
Robotics Resource Center
Worcester Polytechnic Institute
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