Cost Effective Attitude Control MEMS IMU

ER-MIMU-16
1. Small size: 47×44×14mm;
2. Light weight: 40g;
3. Gyro bias instability: 0.3-0.1 º/h (Allan variance).

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Introduction

ER-MIMU-16 Cost Effective Attitude Control MEMS IMU

Introduction
ER-MIMU-16 is a complete inertial measurement unit with a built-in 3-axis gyroscope, a 3-axis accelerometer, a 3-axis magnetometer, and a pressure sensor. Each inertial sensor combines industry-leading MEMS technology with signal conditioning to deliver optimized dynamic performance. Each sensor has its own dynamic compensation formula that provides accurate sensor measurements.

ER-MIMU-16 provides a simple and efficient way to integrate accurate multi-axis inertial sensing into industrial systems compared to complex and expensive discrete design solutions. All required motion testing and calibration are part of the factory production process, significantly reducing system integration time. The SPI and register structures provide a simple interface for data collection and configuration control. It is available in a module package measuring approximately 47 mm x 44 mm x 14 mm with a standard connector interface.

Features
Three-axis digital gyroscope:
Dynamic measurement range: ±450º/s;
Bias instability: 0.3 º/h (Allan variance);
Angle random walk: 0.15º/√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;
Communication interface: 1 SPI

Application
Drone heading, pitch, roll measurements
Control and orientation in robots and driverless vehicles
Guidance, navigation and control in tactical MEMS system
Stabilizing and pointing in the satellite dish, target tracking system
High-speed rail track monitoring and maintenance
Ship attitude measurement and maintenance, channel detection and maintenance
Forests, land monitoring, etc

Specifications

Parameter	Test condition	A	B	C	Unit
Gyroscope
Measuring range		±400	±400	±400	º/s
Bias instability	Allan variance	＜0.3	＜0.3	＜0.1	º/h
Bias stability	10s,1δ	＜3	＜2	＜1	º/h
Bias stability	1s,1δ	＜9	＜6	＜3	º/h
Random Walk	1б	＜0.125	＜0.125	＜0.05	º/√h
Bias Repeatability	1б	＜3	＜2	＜1	º/h
Scale factor at 25°C		16000	20000	20000	LSB/º/s
Scale factor non-linearity		＜300	＜300	＜300	ppm
Bandwidth(3dB)		250	300	300	Hz
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
Magnetometer
Dynamic measurement range		±2.5			Gauss
Resolution		120			uGauss
Noise Density		50			uGauss
Bandwidth		200			Hz
Barometer
Pressure range		450~1100			mbar
Overall error		6			mbar
Resolution		0.1			mbar
Absolute measurement accuracy		1.5			mbar
Long-term stability		±1			mbar/yr
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		-45~85			℃