ER-MIMU-04 Low-Cost Attitude-control MEMS IMU
Introduction
Inertial Measurement Unit, referred to as IMU, is a device to measure the attitude angle (or angular velocity) and acceleration of the three axis of the object. Gyroscope and accelerometer are the core devices of inertial navigation system (INS). With the built-in accelerometer sensor and gyroscope, the IMU can measure the linear acceleration and rotation angular velocity from three directions and can obtain the attitude, velocity and displacement information of the carrier through the resolving.
ER-MIMU-04 uses MEMS accelerometer and gyroscope with high quality and reliability, RS422 and external communication, baud rate can be flexibly set between 230400~921600, through the communication protocol to set the user’s required communication baud rate. With X, Y, Z three-axis precision gyro, X, Y, Z three-axis accelerometer with high resolution, can be output by RS422 X, Y, Z three axis of gyroscope and accelerometer’s original hexadecimal complement data (including gyro hexadecimal complement the numerical temperature, angle, the accelerometer hexadecimal temperature, the acceleration hexadecimal complement number); It can also output float dimensionless values of the gyroscope and accelerometer processed by the underlying calculation.
Features
Gyro bias instability:1deg/hr
Gyro bias stability (10s 1σ): 5deg/hr
Gyro angular random walk:0.25 °/√h
Weight:≤100g (without shell)
≤220g (with shell)
Operate Temp:-40℃~ + 80℃
The product is low-cost and can be gesture controlled
small size
Application
Azimuth, attitude, position measuring and keeping In GNSS-assisted INS
Heading, pitch, roll measuring In AHRS for UAV
Motion survey and keeping in MRU
Attitude & azimuth keeping, positioning in IMU
Guidance, navigation, control in tactical MEMS weapon system
Stabilizing & Pointing in satellite antenna,target tracking system
Robotic Control & Orientation in Autonomous machines, Unmanned vehicles
Specifications
Item | Parameter | Unit | |
Gyro performance | |||
Input Range | 400 | dps | |
Bandwidth | 200 | Hz | |
Scale factor | 20000 | LSB/°/s | |
Scale factor non-linearity | 200 | ppm | |
Scale factor temp drift (1б) | 500 | ppm | |
Bias Instability | 1 | deg/hr | |
Bias stability (10s 1σ) | 5 | deg/hr | |
Bias stability (1s 1σ) | 15 | deg/hr | |
Angular Random Walk | 0.25 | °/√h | |
Bias Run-Run (1σ) | 5 | deg/hr | |
Accelerometer performance | |||
Range | 10 | 40 | g |
Nonlinearity | 0.1 | 1.3 | % FSR |
Cross Axis Sensitivity | 1 | 1 | % |
Bandwidth | 2.4 | 2.4 | Hz |
Bias Repeatability | 5 | 5 | mg |
Bias Temp Coefficient | <0. 5 | <0. 5 | mg/°C |
Factor Scale Repeatability | <0.1 | 0.2 | % |
Factor Scale Temp Coefficient | ±0.01 | ±0.01 | %/°C |
Factor Scale | 800000 | 200000 | μg/LSB |
System Performance | |||
Supply Voltage | 6~12V | ||
Supply Consumption | 2W | ||
Interface | RS422 | ||
Vibration | 6.06g (10~2000Hz) | ||
Shock | 5000g, 0.1ms | ||
Operate Temp | -40℃~+ 80℃ | ||
Storage Temp | -55℃~ + 105℃ | ||
Weight | ≤100g (without shell)
≤220g (with shell) |
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Size | 43.2mm*43.2mm*35.5mm (without shell)
65mm*70mm*45.5mm (with shell) |
Application Techniques
1.IMU and GPS fusion algorithm principle
2.MEMS IMU error analysis and compensation
3.Reusable spacecraft IMU dynamic accuracy assessment method
4.Research on MEMS IMU error modeling and temperature compensation technology
5.Calibration method and error analysis of low-precision MEMS IMU
6.MEMS-IMU error calibration compensation method that does not rely on precision turntable