I'll be clearer - you can't measure _absolute_ angle with a rate gyro. Integrating the signal gives you a drifting measure of _change_ of angle, and due to non-linearity you get different measurements at different rates too (although this imperfection is usually within a few percent).
OK i apologize for my unclear post
That is the reason why i used the "evaluate" word, but i should have been more precise, thank you to correct me
So i also be clearer, you can output the change of angle in degrees by integration of gyro angular rate data but with high drift due to the gyrometer technology (MEMS). This measure is non-reliable.
Also for your balancing robot application, i think you need to combined information coming from an accelerometer and a gyrocope (i'm not an expert so correct me if i'm wrong)
hi i am building a balancing robot and need to output the current angle of the gyro in degrees.
Is it possible to give us more precisions on your project ?
Philosophically all gyroscopes are rate gyros since we can't make a perfect one, but there's a real world difference between a ring laser gyro that doesn't need drift correction during the whole journey and a MEMS one that needs it every 10 seconds!
Yes, this is also the reason why Inertial Navigation Systems are not, for the moment
,made with MEMS sensors