ER-MG2-50/100 High Performance North-Seeking MEMS Gyro
Introduction
ER-MG2-50/100, a high performance MEMS gyro sensor with 0.01-0.02°/hr bias instability and 0.0025-0.005°/√hr angular
random walk, is specially designed for north seeking, pointing, initial alignment in logging tools/gyro tools,
mining/drilling equipment, weapon/UAV launch systems, satellite antenna, target tracking system and so on. Thanks to the
high performance, ER-MG2-50/100 can also used in high precision attitude measuring, stabilization control, positioning,
navigating in navigation grade MEMS IMU/INS, land surveying/land mobile mapping system, railway train system, etc. So
ER-MG2-50/100 is a best, cost effective, robust, reliable, small size, light weight, low power alternative of medium-low
navigation grade FOG DTG with north seeking, precision attitude measuring , inertial positioning and navigation
function.
The ER-MG2-50/100 High Performance North Seeking
Gyroscope is a single-axis MEMS angular rate sensor (gyroscope) capable of measuring angular velocity up to a
maximum of ±100°/s with digital output compliant to SPI slave mode 3 protocol. Angular rate data is presented as a
24-bit word.
The ER-MG2-50/100 is intended for north seeking applications. As an advanced, differential sensor design rejects the
influence of linear acceleration, enabling ER-MG2-50/100 to operate in exceedingly harsh environments where shock and
vibration are present.
The ER-MG2-50/100 is available in a hermetically sealed ceramic LCC surface mount package, and is capable of operating
at 5V supply and a wide temperature range (−40°C to +85°C).
Features
Proven and robust silicon MEMS gyro
0.01-0.02°/hr bias instability
0.0025-0.005°/√hr angular random walk
Digital output (SPI slave)
5V operation (4.75~5.25V supply)
Low power consumption (35 mA)
High shock and vibration rejection
Hermetically sealed ceramic LCC surface mount package (11x11x2mm)
Integrated temperature sensor
RoHS compliant
Application areas
North seeking in logging tools/gyro tools
Pointing, steering and guiding in advanced mining/drilling equipment
Initial alignment in weapon/UAV launch systems
Direction pointing and tracking in satellite antenna, target tracking system
Guidance and navigation in navigation grade MEMS weapon system
Orientating and positioning in railway train system
Precision platform attitude measuring and controls
Precision attitude, position measuring in navigation grade MEMS IMU/INS
North finding and positioning in land surveying/land mobile mapping system
Petroleum exploration
Bridge, tall building, tower, dam monitoring
Rock and soil monitoring
Mining
Specifications of North Seeking Gyroscope
| Parameters | ER-MG2-50 | ER-MG2-100 | Unit |
| Range | 50 | 100 | deg/s |
| Resolution | 24 | 24 | bits |
| Data rate | 2k | 2k | Hz |
| Group delay | 50 | 20 | ms |
| Bandwidth (-3dB) | 12 | 12 | Hz |
| Scale factor at 25°C | 160000 | 80000 | lsb/deg/s |
| Scale factor repeatability (1σ) | <50 | <50 | ppm |
| Scale factor vs temperature (1σ) | 300 | 300 | ppm |
| Scale factor non-linearity (1σ) | <200 | <200 | ppm |
| Bias instability | <0.01 | <0.02 | deg/hr |
| Bias stability (1σ 10s) | <0.05 | <0.1 | deg/hr |
| Bias stability (1σ 1s) | <0.15 | <0.3 | deg/hr |
| Bias repeatability (1σ) | <0.1 | <0.1 | deg/hr |
| Angular random walk | <0.0025 | <0.005 | °/√h |
| Bias error over temperature (1σ) | 3 | 3 | deg/hr |
| Bias temperature variations, calibrated (1σ) | <0.1 | <0.3 | deg/hr |
| Noise peak to peak | ±0.002 | ±0.003 | deg/s |
| G-sensitivity | <0.5 | <1 | °/hr/g |
| Vibration rectification error | <0.5 | <1 | °/hr/g (rms) |
| Startup time | 1 | 1 | s |
| Sensor resonant frequency | 11~13 | K | |
| Environment, power and physical | |||
| Shock (charged) | 1000g, 1ms, half sine wave | ||
| Shock (uncharged) | 10000g, 1.0ms, half sine wave | ||
| Vibration (operating) | 12grms, 20Hz to 2KHz random vibration | ||
| Operating temperature | -40°C~85°C | ||
| Max storage (survival) temperature | -55°C~125°C | ||
| Supply voltage | 5±0.25V | ||
| Current consumption | 40mA | ||
ER-MG2-100 ALLAN VARIANCE
Capable of measuring angular velocity up to a maximum of ±100°/s with digital output compliant to SPI slave mode 3 protocol.
The above information about north seeking gyroscope is provided by our engineers, if you want to know more, please contact us.
Application Techniques
1.Bandwidth test method of MEMS gyroscope
2.Impact resistance technology of MEMS gyroscope
3.System error and calibration of MEMS gyroscope
4.Analysis of drive loop noise of MEMS gyroscope
5.MEMS Gyroscope: Error Compensation By Allan Variance Method
6.Comparative analysis of integrated modes of three-axis MEMS gyroscope
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