MAGUS

Inertial Reference System ADMA-G for vehicle dynamics testing

The Automotive Dynamic Motion Analyzer (ADMA) is more than just an inertial reference system and has been specially developed for vehicle dynamics measurements in the automotive sector. Equipped with DGNSS (Differential Global Navigation Satellite System) and fiber optic gyroscopes, this highly accurate inertial reference system defines new standards for vehicle dynamics applications in the automotive sector. Our inertial reference track system ADMA allows for constant measurement of acceleration, speed and position of moving vehicles in all three dimensional axes. Pitch, roll and course angles can be continuously and precisely measured with ADMA as well as course and side-slip angles as well as angular rates.

This makes the GeneSys’ ADMA inertial measurement unit (IMU) the best choice among inertial reference systems where challenging measurements with maximum accuracies are required.

Options and accessories for the Inertial Navigation System ADMA-Speed

Optionally, ADMA-Speed can be expanded to a full-fledged Inertial Navigation System, e.g. for vehicle dynamics testing or verification of ADAS systems (Advanced driver assistance systems).
· Output of lateral deviation
· Output of all motion states(acceleration, velocity, position, angular rate, angle)
· 2 antenna version for course angle without initialization
· 2cm position accuracy
· Data output rate 1kHz
· Relative data calculation (e.g. range) via WiFi in real-time for multi-vehicle operation

Our Inertial Navigation System at a glance

Meets requirements of international test standards EURO NCAP and NHTSA

GNSS speed sensor optimized for brake tests

ADMA-Speed eliminates the known disadvantages of GNSS speed sensors

Validation of driver assistance systems e.g. ACC, FCW, AEB(VRU, Car2Car), LSS(LDW, LKA)

Chassis adjustment

Highlights of our Inertial Navigation System

User-friendly handling thanks to the combination of GNSS antenna and inertial sensors in one housing

Mounting by means of powerful magnets on the vehicle roof

Pitch compensation during braking

Considerably smoother speed signal in comparison to GNSS

Compensation of GNSS data latency

Correction of acceleration-dependent GNSS signal distortion

Speed calculation at the vehicle center of gravity

Data processing unit with tried and tested Kalman filter technology

Output of acceleration, speed and braking distance via CAN interface in real-time (up to 1kHz)

Signal inputs for braking trigger or light barrier

Speed and signal-triggered braking distance

Technical Information

COMPLETE SYSTEM
GNSS constellations	GPS L1, L2 GLONASS L1, L2 BeiDou B1, B21 Galileo E1, E51
Dual antenna	Optional
Position accuracy (1σ)*2	0.01 / 0.20 / 0.60 / 1.20 / 1.50m
Angle Measurement range roll / pitch / yaw	60° / 60° / ± 180°
Angle Measurement accuracy roll & pitch (1σ) / yaw (1σ) / sideslip (RMS)	0.02 / 0.05 / 0.15°
Angle resolution	0.005°
Velocity accuracy (RMS)*3	0.04km/h
Position error after 10 / 30 / 60sec GNSS outage (RMS)*3	0.4 / 5.0 / 40.0m
Velocity error after 10 / 30 / 60sec GNSS outage (RMS)*3	0.06 / 0.5 / 1.5m/sec
Roll / Pitch angle error after 10 / 30 / 60sec GNSS outage (RMS)*3	0.05 / 0.15 / 0.30°
Heading angle error after 10 / 30 / 60sec GNSS outage (RMS)*3	0.05 / 0.15 / 0.30°
Braking distance accuracy without RTK (RMS)*3	0.05m
Data output rate	50 / 100 / 200 / 250 / 500 Hz / (1000 Hz)*1
Calculation latency	1msec
SENSORS - GYROS
Sensor Technology	3 MEMS gyros
Measurement range	±450°/s
Data output resolution	0.0001°/s
Bias repeatability typ. (1σ)	0.2°/s
In-run-bias typ.	6°/h
Noise (random walk) typ.	0.3°/√h
Scale factor	0.2%
Sensor bandwidth	330Hz
SENSORS - ACCELEROMETERS
Sensor Technology	3 MEMS accelerometers
Measurement range	± 5g / ± 15g*1
Data output resolution	0.0001g / 0.0001g
Bias repeatability typ.	4mg / 16mg
In-run-bias typ. (1σ)	32ug / 70ug
Noise (random walk) typ.	50ug /√Hz / 63ug /√Hz
Scale factor (1σ)	0.2% / 0.2%
Sensor bandwidth	330Hz / 330Hz
INTERFACES
Ethernet	2x 1 GBit Data input/output, configuration and firmware update, driving robot data output, optional for relative data calculation and DGNSS routing. 1x 100 MBit GNSS Receiver; GNSS firmware update
CAN	1x CAN 2b, 1Mbit Data output, input*1
Serial	1x RS232 GNSS Receiver; DGNSS correction data input 1x RS232 GNSS Receiver; GPGGA Log output, IPS(Indoor Positioning System)
Digital/Analog Input	3x Digital / Analog(16bit) e.g. Frequency, Brake trigger, …
Digital Output	4x Digital TTL e.g. PPS, Frequency, PPD Pulse per distance, …
Connector type	Lemo & Sub-D
GNSS	2x TNC GNSS Antenna connectors
HARDWARE / MISCELLANEOUS
Ordering Variants	-
Internal Memory	up to 64GB
Power supply	9 to 32 VDC typ. 20W
Dimensions (W x L x H)	225 x 235 x 75mm
Weight	Data processing unit 2.3kg Sensor unit 0.75kg
Operating temperature	Data processing unit -20 to +60°C Sensor unit -40 to +85°C

*1 Optional
*2 Depending on GNSS conditions, correction data and license model
*3 Typical values according to internal test standards with settled Kalman filter.