Gyro sensors, also known as angular rate sensors or angular velocity sensors, are devices that sense angular velocity.
Gyro sensors work as a force that acts on objects that are in motion relative to a rotating reference frame.
Gyro sensors relay data to computers that use algorithms to make adjustments to the positioning of the drone.
The change in angle information is used to provide stability to drone and to prevent it from moving unsteadily.
The information from gyroscope is fed to motor control drivers to control the speed of motors dynamically to provide the stability to motor.
Gyroscope also ensure that drones rotate at exact angle which is expected by user controls.
Gyros and accelerometers together, provide input to the flight-control system in order to maintain level flight. This is extremely important for applications where stability is paramount, from surveillance to delivery of fragile goods.