High Performance MEMS Inertial Measurement Units (IMUs) for Unmanned Vehicles

Honeywell
Honeywell Aerospace

Honeywell is a leading developer of navigation technologies for unmanned aircraft and other robotic systems.

Our Micro-Electro-Mechanical System (MEMS) Inertial Measurement Units (IMUs), designed specifically for industrial applications, are ITAR-free and do not require export licenses. The state-of-the-art systems are ideal motion-sensing solutions for all kinds of unmanned vehicles, including UAVs, UGVs and AUVs.

HG4930 MEMS IMU for UAVs

HG1120 MEMS IMU for Industrial Applications

Advanced MEMS IMU Technology

IMUs accurately measure motion by utilizing gyroscopes and accelerometers to sense rotation and acceleration. Some IMUs also include magnetometers to sense the surrounding magnetic field.

IMUs are essential for a wide variety of applications, such as:

  • Object tracking for cameras
  • Integration with GPS/GNSS to help vehicles navigate through difficult environments such as forested areas, dense urban areas or underwater
  • Dynamic antenna platform stabilization
  • Pairing with other aiding sources such as radar or LIDAR to enable robots to navigate indoors.

HG1120 MEMS IMU for RoboticsOur HG1120 and HG4930 IMUs utilize proprietary Honeywell technology and designs and leverage our vast experience with inertial sensing technologies. The systems have been designed to meet a broad range of robotic application needs, such as precision agriculture, surveying and mapping, platform stabilization, navigation, and motion compensation.

The HG1120 and HG4930 employ advanced MEMS gyroscopes and accelerometers, and the HG1120 also includes magnetometers. Both systems feature an internal environmental isolation system designed to attenuate unwanted inputs commonly encountered in real-world applications, making the IMUs rugged enough for even the most demanding environments.

HG4930 MEMS IMU for AUVsWith industry standard communication interfaces, both the HG1120 and HG4930 are easily integrated into a variety of architectures.

The extremely small size, light weight and low power make the IMUs ideal for space-constrained and SWAP-conscious unmanned vehicle applications.

HG1120 Compact Rugged MEMS-Based IMU

HG1120 MEMS IMU for UAVsThe HG1120 high performance IMU includes MEMS gyroscopes, accelerometers, and magnetometers. It is available in three different performance grades, each with a range of user configurable options with selectable output data rates and filtering, and RS-422 Asynchronous and SPI Interface protocols. CAN interface is available upon request.

Key Characteristics:

Volume / Size: 1.7 in3 (29 cm3) / 1.850” x 1.730” x 0.557”
Weight: <1.1 Watts
Power Consumption: <1.1 Watts
Operating Temperature Range: -40oC to 85oC
Data Rate: Up to 300 Hz (Guidance) and 1800 Hz (Control) – user configurable
Gyroscope Operating Range: Up to 500 deg/sec in all axes
Accelerometer Operating Range: Up to 16g in all axes
Magnetometer Operating Range: Up to 16 gauss in all axes
Supply Voltage: +3.0 to +5.5 VDC

Standard Models Typical Performance – Stable Room Temperature

Gyro Bias Repeatability (o/hr) Gyro Bias In-Run Stability (o/hr) ARW (o/√hr) Accel Bias Repeatability (mg) Accel Bias In-run Stability (mg) VRW (fps/√hr)
HG1120CA50 260 10 0.3 5 0.03 0.20
HG1120BA50 520 34 0.4 10 0.05 0.25
HG1120AA50 780 48 0.5 15 0.08 0.30

Standard Models Typical Performance – Full Operating Temperature Range

Gyro Bias Repeatability (o/hr) Gyro Bias In-Run Stability (o/hr) ARW (o/√hr) Accel Bias Repeatability (mg) Accel Bias In-run Stability (mg) VRW (fps/√hr)
HG1120CA50 500 38 0.6 8 0.11 0.25
HG1120BA50 720 65 0.7 16 0.15 0.30
HG1120AA50 1080 120 1.3 24 0.20 0.50

HG4930 High Performance MEMS-Based IMU

HG4930 MEMS IMU for NavigationThe HG4930 very high performance IMU is available in three different performance grades, each with RS-422 Asynchronous and SDLC standard protocols. The system is ideal as a smaller, lower power, and cost effective replacement for a fiber optic gyro (FOG) IMU.

Key Characteristics:

Volume: 5 in3 (82 cm3)
Weight: 0.3 lbs (140 grams)
Power Consumption: <2 Watts
Operating Temperature Range: 54oC to 85oC (varies by configuration)
Data Rate: 100 Hz (Guidance) and 600 Hz (Control) – other rates available
Gyroscope Operating Range: <200 deg/sec standard (higher ranges also possible)
Accelerometer Operating Range:  +/- 20 g
Supply Voltage:
+5 VDC +/- 5%

Standard Models Typical Performance – Stable Room Temperature

Gyro Bias Repeatability (o/hr) Gyro Bias In-Run Stability (o/hr) ARW (o/√hr) Accel Bias Repeatability (mg) Accel Bias In-run Stability (mg) VRW (fps/√hr)
HG4930CA51 5 0.6 0.005 1.7 0.05 0.17
HG4930BA51 10 0.7 0.006 2.0 0.08 0.17
HG4930AA51 15 0.8 0.009 2.0 0.08 0.23

Standard Models Typical Performance – Full Operating Temperature Range

Gyro Bias Repeatability (o/hr) Gyro Bias In-Run Stability (o/hr) ARW (o/√hr) Accel Bias Repeatability (mg) Accel Bias In-run Stability (mg) VRW (fps/√hr)
HG4930CA51 20 1.0 0.09 5 0.3 0.3
HG4930BA51 40 1.5 0.125 10 0.5 0.3
HG4930AA51 60 1.5 0.175 10 0.5 0.4

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