IMU Calibration

Because of the particular MEMS construction of our gyros and accelerometers, they naturally offer higher performance than other MEMS inertial sensors in today's marketplace.  And this has naturally positioned Silicon Sensing at the high-performance end of the sensor spectrum.  However, to significantly improve the overall performance of Silicon Sensing's IMUs, which use our own MEMS inertial sensors, we have invested heavily in a world-leading calibration facility at our premises in the UK.

Such IMUs (for example DMU11 and DMU30) are calibrated in bulk in our multi-axis temperature ovens.  By spinning these IMUs whilst subjecting them to steady-state temperatures across their operating range (including extremes of temperature and rotation rate), individual calibration/compensation coefficients are generated for each IMU and they are then downloaded to each device as one of the final steps in their production.  Generation of these coefficients is as a result of proprietary sophisticated curve-fitting programmes, developed by Silicon Sensing over many years.

The result is to improve the performance of the individual IMU by an order of magnitude, thus providing a more attractive and cost-effective inertial sensing solution to our customer base.