North-seeking MEMS IMU

ER-MIMU-14
1. Small size: 47×44×14mm;
2. Light weight: 40g;
3. Gyro bias instability can be up to 0.01 º/h (Allan variance).

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Introduction

ER-MIMU-14 North-seeking MEMS IMU

Introduction
ER-MIMU-14 is a micromechanical technology (MEMS)-based inertial measurement unit (IMU). which has the advantages of small size and light weight. Built-in three-axis gyroscope and three-axis accelerometer for measuring the three-axis angle parameters of the carrier, such as angular velocity, acceleration. The output data after error compensation (including temperature compensation, installation dislocation angle compensation, nonlinear compensation, etc.) are solved to obtain carrier attitude, velocity, displacement and other information.

ER-MIMU-14 uses a high-precision and high-reliability MEMS accelerometer and gyroscope. It can be used for precise navigation, control, and dynamic measurements. Even in harsh environments, angular velocity and acceleration information of moving carriers can be accurately measured.

Features
Three-axis digital gyroscope:
The bias instability can be up to 0.01 º/h (Allan variance);
Bias Repeatability: 0.1 º/h
Angle random walk: <0.0025º/√h.
Three-axis digital accelerometer:
Dynamic measurement range: ±30g;
Bias instability: 10ug (Allan variance);
Ensure accuracy over the full temperature range (-40°C~80°C): Built-in high-performance temperature calibration and compensation algorithm;
Low power consumption: 2W
Communication interface: 1 SPI

Applications
High-precision attitude measurement, stability control, positioning
Attitude control in UAV launch systems, satellite antennas, target tracking systems, etc
Attitude measurement and control of precision platforms
Navigation-level Navigation in a MEMS system
Land Survey/Land Mobile Mapping System
Railway train system monitoring and control, etc

Specifications

Parameter	Test condition	A	B	C	Unit
Gyroscope
Measuring range	/	±50	±100	±200	º/s
Bias stability	10s smoothing,1σ	0.05	0.1	0.1	º/h
Bias instability	(1σ 25℃)Allan variance	0.01	0.02	0.02	º/h
Random Walk		＜0.0025	＜0.005	＜0.005	º/√h
Bias Repeatability	1σ,25℃	＜0.1	＜0.1	＜0.1	º/h
Scale factor at 25°C	/	160000	80000	40000	LSB/°/s
Scale factor non-linearity	1σ	＜200	＜200	＜300	ppm
Scale factor repeatability	1σ	＜50	＜50	＜100	ppm
Accelerometer
Measuring range		±30			g
Bias instability	Allan variance	10			ug
Bias stability	10s smoothing,1σ	＜50			ug
Bias temperature coefficient		＜20			ug/℃
Bias temperature hysteresis		＜1.5			mg
Bias month repeatability	1σ	100			ug
Scale factor non-linearity		＜500			ppm
Scale factor month repeatability		＜30			ppm
Bandwidth		100			Hz
Communication Interface
1 way SPI	Baud rate	＜15			MHz
Electrical specification
Voltage	6-12				V
Power dissipation	2				W
Structural characteristics
Dimension	47×44×14mm
Weight	40				g
Operating environment
Operating temperature	-40~80				℃
Storage temperature	-55~105				℃