North-Seeking MEMS IMU for Gyro Tools

ER-MIMU-09 (0.02 deg/hr)
1. 3 axis gyroscope & 3-axis accelerometer;
2. Size: 110mm x Φ30mm;
3. Gyro bias instability: 0.02 deg/hr.

North-Seeking MEMS IMU for Gyro Tools

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    Introduction

    ER-MIMU-09 North-Seeking MEMS IMU for Gyro Tools

    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-09 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.

    Application
    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

    Specifications

    ItemER-MIMU-09AER-MIMU-09H
    Gyro performance
    Range100deg/s100deg/s
    Bandwidth (-3dB)12Hz12Hz
    Scale Factor at 25°C80000LSB/(deg/s)80000LSB/(deg/s)
    Scale Factor Repeatability (1σ)<50ppm<100ppm
    Scale Factor VS Temperature (1σ)300ppm500ppm
    Scale Factor Non-Linearity (1σ)<200ppm<300ppm
    Bias Instability<0.02deg/hr<0.02deg/hr
    Bias stability (10s 1σ)<0.1deg/hr<0.1deg/hr
    Angular Random Walk<0.005°/√h<0.025°/√h
    Bias error over temperature (1σ)3deg/hr3deg/hr
    Bias temperature variations, calibrated (1σ)<0.3deg/hr<0.3deg/hr
    Bias Run-Run (1σ)<0.1deg/hr<0.1deg/hr
    Accelerometer performance
    Range10-30g
    Bandwidth100Hz
    Bias Stability (1s)(1σ)≤0.05mg
    Bias Repeatability≤0.1mg
    Bias Temp Coefficient<10ug/℃
    Bias Temp Hysteresis<0.5mg
    Factor Scale Non-linearity<500ppm
    Factor Scale Repeatability≤30ppm
    Factor Scale Temp Coefficient10ppm/℃
    Class II Non-linearity Coefficient<100ug/g2
    Factor Scale400000-800000μg/LSB
    System Performance
    Supply Voltage6V~12V
    Supply Consumption2W
    InterfaceRS422
    Vibration6.06g (10~2000Hz)
    Shock5000g, 0.1ms
    Operate Temp-40℃~ + 80℃-40℃~ + 125℃
    Storage Temp-55℃~ + 105℃-55℃~ + 125℃
    Weight≤70g
    Size110mm x Φ30mm


    Application Techniques

    1.IMU and GPS fusion algorithm principle

    2.MEMS IMU error analysis and compensation

    3.Research on MEMS IMU error modeling and temperature compensation technology

    4.Calibration method and error analysis of low-precision MEMS IMU

    5.MEMS-IMU error calibration compensation method that does not rely on precision turntable

    6.Application of Improved Wavelet De-noising Method in MEMS-IMU Signals


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