Rate Gyro
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 G370A Aircraft Rate Gyro  US $164.99
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 Hamilton Standard SuperGyro Rate Gyro 10 05435 181 US $149.95
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 Hamilton Standard SuperGyro Rate Gyro 10 05435 182 US $149.95
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 Futaba RC Model G155 Rate System Helicopter R C Hobby Gyro GY018 US $109.90
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 Futaba GY 401 SMM Rate Gyro US $56.00
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 Tarot GY650 AVCS Dual rate Head locking Gyro US $49.99
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 ASSAN GA410 AVCS Dual Rate Tail Lock Gyro GA 410 Heli US $49.80
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 GWS GW PG 02 Dual Rate Piezo Gyro US $48.99
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 Hobbymate HB790 MEMS Rc Helicopter 3D Gyro dual Rates Metal Cover Case HB790 US $39.99
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 HOBBYMATE HB730 RC Dual Rate and Head Lock Gyro GY200 US $28.90
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 HB730 RC Dual Rate and Head Lock Gyro HOBBYMATE GY200 US $28.90
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 KDS 800 AVCS Dual Rate Head Lock Gyro 3D Flying KD001 US $26.90
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 AVCS Dual Rate Head Lock Helicopter Gyro KDS800 GY225 US $25.90
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 HOBBYMATE RC Model HB730 Dual Rate and Head Lock Gyro GY200 US $25.90
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 KDS800 AVCS Dual Rate Head Lock Helicopter Gyro GY225 US $25.90
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 RC Model Helicopter GY400 AVCS Rate Gyro Colco GY093 US $23.90
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 Colco GY400 AVCS Rate RC Model Helicopter Gyro GY093 US $23.90
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 HB730 AVCS Dual Rate Head Lock Gyro for T rex 450 3D US $22.38
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 HB730 AVCS Dual Rate Head Lock Gyro f T rex 450 3D S US $22.38
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 AVCS Dual Rate RC Kreisel KDS 800 KDS800 Head Lock Gyro US $21.98
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 HB730 AVCS Dual Rate Head Lock Gyro for Trex 450 3D US $19.98
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 KDS800 KDS 800 AVCS Dual Rate Head Lock Gyro for 450 US $19.80
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How do I determine the angle of rotation using a rate gyro?
I am using a Gyrocube 3A rate gyroscope from O Navi which has a full scale range of 150 deg/second. I have connected this gyroscope to a 16 bit analog to digital converter and have connected the output of the converter to my computer using serial port to read the values obtained. I have obtained the values from the converter.
I would like to know how I can convert these values to give the actual angle by which my device has turned.
P.S.: I have obtained an array of values since I did the testing for about 5 minutes. Should I add all these values together or take their average? How can I know the angle by which my device has turned using these values?
Rate multiplied by time equals distance. If you travel at a rate of 50MPH how far did you travel in 1/2 hour. (25 miles)
Same type of problem. if you move at a rate of 10 deg/sec for three seconds you should have moved a total of 30 degrees. This of course assumes that you kept a uniform rate for the entire three second period. Now suppose that you measured 30 readings at 1/10th of a second intervals and each reading indicated the same 10deg/sec rate. The answer would be the same 30 degrees
The difference between these two methods is the ability to detect variations in rate across shorter periods of time. The faster you poll the rate information the more accurate the overall reading will be.
Rate readings should also have positive and negative values. Move left its negative , move right its positive for example. You would then add all of the readings and come up with a net result that should be very close to the actual overall angle moved from the initial position.
Problem with this method is that errors compound over time unless they are zeroed out against a known point or reference periodically. Polling rate information at a quicker pace minimizes the rate the error builds up by capturing rate information before the unit has experiences a large variation in rate. However variations still happen and ultimately build up to a point where the computed angle is erroneous. This is why the angle is periodically compared to a known reference point and zeroed to it before such total error grow large enough to become problematic.
Simple rate gyroscope - From gyroscope.com
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