Low-cost MEMS IMU for Attitude Control

Low-cost MEMS IMU for Attitude Control

Introduction
ER-IMU-184 is a high-reliability and high-precision six-axis small-sized inertial measurement unit. The inertial sensing system integrates navigation-grade MEMS three-axis gyroscope and three-axis accelerometer. The angular rates and accelerations outputted are filtered and calibrated excellently, enabling ER-IMU-184 to provide precise inertial data under harsh conditions.

ER-IMU-184 offers multiple configurable industrial standard communication interfaces and a wide input voltage range, facilitating its integration into various systems. It also features a small size, low power consumption, and high precision. It is an ideal choice for attitude measurement and navigation in most marine unmanned aerial vehicle on-board applications.

Feature
Low cost
Gyroscopic bias instability: 1 deg/hr
Gyroscopic bias stability (10s 1σ): 5 deg/hr
Gyroscopic angle random walk: 0.25 °/√h

 Application
Autonomous machine control and positioning in autonomous robots and unmanned vehicles
Azimuth, attitude and position measurement and stabilization in GNSS-assisted INS
Pitch and roll measurement in UAV AHRS
Motion measurement and stabilization in MRU
Attitude and azimuth stabilization, and positioning in IMU

Specification

Project	Parameter			Unit
Gyroscope	A		B
Range	400		400	deg/s
Scale factor(25°C)	20000		20000	LSB/deg/s
Scale factor temperature drift (1σ)	±500		±500	ppm
Scale factor non-linearity (1σ)	<200		200	ppm
Bias instability (1σ at 25°C)	3		1	deg/hr
Bias stability (10s at 1σ)	5		4	deg/hr
Angle random walk	<0.25		<0.2	°/√h
Bias repeatability (1σ at 25°C)	5		4	deg/hr
Accelerometer
Range	±10,±20, ±40			g
Cross-coupling sensitivity	1			%
Scale factor	±10, ±20, ±40	19.5, 39, 78		ug/LSB
Sensitivity temperature coefficient	±0.01			%/°C
Repetition	X, Y axis, Z axis	0.1, 0.2		%
Non-linearity	±10g, ±40g	0.1, 1.3		% FSR
Spectral density	±10, ±40	75, 90		ug/√Hz
Random walk of velocity	X, Y axis Z axis	38.2, 26.5		mm/sec/√Hr
Low-pass filter bandwidth	0.977-1000			Hz

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Application Techniques

1.Do you know the core components that give precise control to automated equipment

2.High-performance IMU: A New Benchmark for Precise Measurement and Control

3.Industrial Versatile Tool: High Cost-Performance IMU Meets Diverse Needs

4.Flight safety secrets: The core role of high-precision IMUs in aviation

5.Revolutionizing drone navigation: How to redefine high performance and low cost

6.From flight control to fault diagnosis, how does IMU dominate drones?

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