Angular accelerometer from Gyroscope

[joe ted]

Posted on December 24, 2016 at 13:34

Hi.

I need an MEMS Angular accelerometer for my application (quatrotor).

As i detected in

http://www.st.com/content/st_com/en/products/mems-and-sensors/gyroscopes.html?querycriteria=productId=SC1288

, ST’s gyros measure angular acceleration.

My question is how i can get this parameter from ST's Gyroscopes?

Thanks

[Oliver Beirne]

Posted on December 28, 2016 at 08:29

Hi Joe

I have moved your thread to the

https://community.st.com/community/mems-sensors-community/mems-sensors-forum?sr=search&searchId=3595a2b3-7de3-440f-995e-849f2d1ddb44&searchIndex=1

‌ where product-related questions live.

Many thanks

Oli

[joe ted]

Posted on December 28, 2016 at 14:23

thanks. looking forward to hearing from ST admins

[Miroslav BATEK]

Posted on December 30, 2016 at 09:18

It is very generic guestion. Most of the ST sensors have I2C/SPI digital output interface. So you have to connect a sensor to a microcontroler through I2C or SPI bus. Initialize the sensor and then you can read angular rate value in degree per second. If you need angular acceleration you have to make derivation because angular acceleration is the rate of change of angular velocity with time.

[joe ted]

Posted on January 07, 2017 at 08:52

Thanks for replay !

I already knew that with derivation from angular rate, i can reach to acceleration rate. But the problem is this action will cause lots of errors because of noises (AWR or temp or bias and . ..) That's why i asking for direct measuring of angular acceleration.

in

/external-link.jspa?url=http%3A%2F%2Fwww.st.com%2Fcontent%2Fst_com%2Fen%2Fproducts%2Fmems-and-sensors%2Fgyroscopes.html%3Fquerycriteria%3DproductId%3DSC1288

,the user guide said: ST’s gyros measure angular acceleration.

My question is how i can get acceleration directly from ST's Gyroscopes?

[Miroslav BATEK]

Posted on January 10, 2017 at 10:16

I'm sorry, it was a mistake on the web page. It is already fixed.

The gyroscope measures angular velocity, it is not possible to get angular acceleration directly from the sensor.

[joe ted]

Posted on January 14, 2017 at 06:43

Ops!

My investigations said for getting the angular acceleration i need to integrate form angular acceleration, which cause lots of errors because of Noise and temp and mechanical stresses.

So the calibrations has been offered for solving this problem. Can you gimme some leads for calibration?