AHRS500GA Series Operator’s Manual
Doc# 7430-0060-02 Rev. A
Page 1
1 Introduction
1.1
The AHRS500GA Series Motion and Attitude Sensing
Units
This manual explains the use of the AHRS500GA Series of products, nine-
axis measurement system designed to measure stabilized pitch, roll and yaw
angles in a dynamic environment.
The AHRS500GA is a nine-axis measurement system that combines linear
accelerometers, rotational rate sensors, and magnetometers. The
AHRS500GA uses the 3-axis accelerometer and 3-axis rate sensor to make
a complete measurement of the dynamics of your system. The addition of a
3-axis magnetometer also allows the AHRS500GA to make a true
measurement of magnetic heading.
The AHRS500GA is the solid-state equivalent of a vertical gyro/artificial
horizon display combined with a directional gyro.
The AHRS500GA series units are low power, fast turn on, reliable and
accurate solutions for a wide variety of stabilization and measurement
applications.
All AHRS500GA products have an RS-232 serial link. Data is streamed
continuously.
Crossbow Technology AHRS500GA units employ onboard digital
processing to compensate for deterministic error sources within the unit and
to compute attitude information. The AHRS500GA units accomplish these
tasks with an analog to digital converter and high performance Digital
Signal Processors.
The AHRS500GA uses angular rate sensors and linear acceleration sensors
that are micro -machined devices. The three angular rate sensors consist of
vibrating ceramic plates that utilize the Coriolis force to output angular rate
independently of acceleration. The three MEMS accelerometers are surface
micro -machined silicon devices that use differential capacitance to sense
acceleration. Solid-state MEMS sensors make the AHRS500GA both
responsive and reliable. The magnetic sensors are state-of-the-art miniature
fluxgate sensors. Fluxgate sensors make the AHRS500GA sensitive and
responsive, with better temperature performance than other technologies
such as magneto-resistive sensors.
The AHRS500GA Series of products utilize a sophisticated Kalman filter
algorithm to allow the unit to track orientation accurately through dynamic
maneuvers. The Kalman filter will automatically adjust for changing
dynamic conditions without any external user input. No user intervention
or configuration is required at power-up.
SUNSTAR传感与控制 http://www.sensor-ic.com/ TEL:0755-83376549 FAX:0755-83376182 E-MAIL:[email protected]
SUNSTAR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL:[email protected]
