IMU in Drones

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The inertial measurement unit works by detecting the current acceleration using one or more accelerometers. IMUs use one or more gyroscopes to detect changes in rotation properties such as pitch, roll and yaw. Some IMUs on drones include magnetometers, which are primarily used to assist in calibration to prevent directional drift.

Onboard processors constantly calculate the drone’s current position. First, it integrates the perceived acceleration with an estimate of gravity to calculate the current velocity. The velocity is then integrated to calculate the current position.

To fly in any direction, the flight controller collects IMU data for the current position and then sends the new data to the motor Electronic Speed Controller (ESC). These electronic speed controllers send the thrust and speed signals needed for the quadrotor to fly or hover to the motor.

Now, you can have the best 6-axis gyroscope technology, but if your drone hardware (propellers, motors, bearings, shafts, etc.) is not straight, clean, or functioning properly, the drone will still fly irregularly or even crash.

It is always a good idea to inspect the parts of the drone before and after each flight. It’s a good idea to have spare parts in case they crack or bend. Keeping drones clean is another good practice. To check whether the propeller is straight, it is best to have a propeller balancer. If all the components look normal and the drone is flying erratically, put it back immediately.

If the drone flies erratically, recalibrate the IMU on a flat surface. Sometimes you need to calibrate the IMUs multiple times. You should also check the drone manufacturer’s website for firmware updates to address any issues within the flight controller. If there are other problems, then the drone could have a hardware failure in the IMU or flight controller.For example, the ER-MIMU-02 developed by Ericco has high performance and small size;

Gyroscope bias instability: 0.05 degrees/hour. It has a wide range of applications. It can be used not only on drones, but also in many fields such as mining and drilling. If you want to know more about IMU products, please click the link below and contact us.

Web:www.ericcointernational.com/inertial-measurement 
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