MEMS Inertial Sensors, Gyroscopes & Accelerometers for Inertial Guidance, Control & Stabilization

New 9 Degrees of Freedom IMU Launched for Low SWaP Applications

At 50x50x50mm, weighing 200g, and with a power consumption 50% lower than its predecessor, Silicon Sensing’s new DMU41 brings ultra-precise motion sensing to smaller, more restricted platforms By DA Reporter / 20 Apr 2021
Silicon Sensing DMU41

Silicon Sensing has announced the release of the DMU41, a new 9 Degrees of Freedom (DoF) Inertial Measurement Unit (IMU) which extends the performance of its predecessor, the DMU30, whist delivering a reduction in volume, weight and power consumption.

DMU41 is an all-silicon Micro Electro-Mechanical Systems (MEMS) IMU that delivers unparalleled inertial performance, combining excellent angle random walk and bias stability with exceptional low noise characteristics.  

This compact 9 DoF unit contains three inductive and three piezoelectric resonating ring gyroscopes with six capacitive accelerometers, all designed and manufactured by Silicon Sensing, along with three magnetometers.  

All inertial sensor data is blended to give optimal motion sensing information, with DMU41 able to provide data at variable output rates up to 2kHz. Outputs can combine angular rate, acceleration, delta angle and delta velocity, temperature and built-in test results – and every DMU41 is calibrated over the full operational temperature range to guarantee sustained, reliable performance. 

At only 50x50x50mm and weighing just 200g, the new DMU41 represents a 54% reduction in volume and a 42% reduction in weight over the DMU30. The DMU41 also has a power consumption 50% lower than DMU30’s typical usage. 

With these decreases in scale and power consumption, the new DMU41 brings ultra-precise motion sensing to far smaller and more restricted platforms and applications whilst delivering performance that competes directly with heavier, larger and more costly, fiber optic gyro-based units.

“We have developed DMU41 in close consultation with customers across many sectors, many of whom have expressed a need for a highly compact, ‘tactical grade’ IMU that is not ITAR (International Traffic in Arms Regulations) controlled,” said Steve Capers, General Manager, Silicon Sensing Systems Ltd. “We expect our new IMU to find a home operating in the most severe situations – environments such as aerospace, marine and space – where consistent, ultra-precise motion sensing is critical but available space and power is limited.”

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