What is IMU sensor?
An IMU is a specific type of sensor that measures angular rate, force and sometimes magnetic field. IMUs are composed of a 3-axis accelerometer and a 3-axis gyroscope, which would be considered a 6-axis IMU. They can also include an additional 3-axis magnetometer, which would be considered a 9-axis IMU.
How does an IMU work?
The IMU is a sensor that measures triaxial acceleration and triaxial angular velocity. The IMU consists of an accelerometer, which can output linear acceleration signals on three axes in space, and a gyroscope, which can output angular velocity signals on three axes in space.
How do I select IMU?
Some of the aspects we have to consider when we have to select an IMU are performance, underlying technology, SWaP (Size, Weight, and Power) and Cost. Besides, another important factor in UAVs is the ruggedness of the IMU. In harsh UAV applications, vibrations can reach a high level and different temperatures.
What is the purpose of an IMU?
– Manned and unmanned aircraft. A connected (or onboard) computer can use an IMU’s measurements to calculate altitude and relative position to a reference frame, making them exceedingly useful in aircraft applications.
What is the output of IMU?
An inertial measurement unit (IMU) is a device that integrates multi-axes, accelerometers, gyroscopes, and other sensors to provide estimation of an objects orientation in space. Measurements of acceleration, angular rate, and attitude are typical data outputs.
Where is IMU used?
IMUs are typically used to maneuver aircraft (an attitude and heading reference system), including unmanned aerial vehicles (UAVs), among many others, and spacecraft, including satellites and landers. Recent developments allow for the production of IMU-enabled GPS devices.
What is IMU bandwidth?
The bandwidth is the maximum frequency to which a sensor or system will respond. This frequency is typically defined at the point where the response has dropped to half power, or the -3 dB point on a Bode mangitude plot.