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Testing MEMS-based Accelerometers in GPS Navigation System With a Custom 2-Axis Gimbal

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Testing MEMS-based Accelerometers in GPS Navigation System With a Custom 2-Axis Gimbal

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Inertial navigation systems are used in a wide range of products such as robots, automobiles and aircraft as well as home electronics and video game consoles. As we are all familiar from the everyday use of GPS navigation devices in automobiles or smart phones, inertial navigational systems continuously calculate the orientation and velocity of a moving object and provide this data to a computer. For a precise calculation of data, test and calibration of the built-in accelerometer sensors is required at various orientations, usually about two rotational axes, during prototype test or in production. The MEMS sensor, housed inside an environmental chamber, is rotated about its central axis and then rotated relative to gravity. The required accuracy and repeatability vary depending on the type of sensors.

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