computers, wireless modems, or wireless LAN adapters.
The controller’s two channels can be operated
independently or combined to set the direction and
rotation of a vehicle by coordinating the motion on each
side of the vehicle. The motors may be operated in open
or closed loop speed mode. The AX2850 includes inputs
for two Quadrature Encoders up to 250 kHz and four limit
switches for precise speed and odometer measurement.
The AX2850 features intelligent current sensing and
controlling that will automatically limit each channel’s
power output to 120 A for the time typically required to
accelerate or stop a robot. If the motor’s current draw
remains excessive after that time (as in the case of stalled
motor or other unusual loading), the controller will
gradually reduce the power to user-selected values.
The controller supports a long list of features,
including analog and digital I/Os for accessories and
sensors, thermal protection, programmable acceleration,
input command watchdog, and non-volatile storage of
The AX2850 can be reprogrammed in the field with
the latest features by downloading new operating
software from Roboteq’s website.
The AX2850 is built into a robust, extruded aluminum
case, which also serves as a heatsink for its output power
stage. The large fin area ensures sufficient heat dissipation
for operation without a fan in most applications.
The AX2850 is available now at $620.00 in single
quantities, complete with cable and PC-based
configuration software. Product information, application
examples, and software can be downloaded from the
For further information, please contact:
8180 E. Del Plomo Dr.
Scottsdale, AZ 85258
Circle #45 on the Reader Service Card.
KoreBot fits the needs of
OEM developers of
handheld devices. The size of a
credit card, KoreBot is a powerful
embedded platform based on the
Intel® PXA-255 400 MHz processor
with XScale® technology. It has 64 Mb SDRAM and 32 Mb
Flash. There are two Compact Flash Type I sockets, two
USB host ports, a KB-250 interface, and a JTAG debug
port. The image shows a Korebot (in back) along with a
Koremotor extension (in front).
KoreBot extends the same type of functionality and
performance found in the latest generation of consumer
PDA devices to the industrial market. Ready-to-run,
extremely compact, yet flexible enough for expansion and
customization for customer application needs, KoreBot
provides the starting point for new designs and comes
complete with all the hardware and software needed to
start development — including a Linux operating system.
KoreBot is an Internet-ready appliance with a built-in
web browser and server when using a pre-configured
Linux operating system. With its load of I/O functions,
XScale can be rapidly configured to be a data entry terminal,
video player, or control system. Applications range from
environmental monitoring to factory automation.
KoreBot allows quick and easy advanced application
development thanks to GNU/Linux programming tools
and SysQuake (developed by Calerga, Switzerland).
SysQuake provides optimized numerical computation and
interactive scientific visualization and can facilitate rapid
and optimal robot control or robot vision software design.
Visualization requires a remote host (PC or Mac) via a
direct or wireless IP connection. (SysQuake for Korebot is
sold separately.) K-Team provides a Linux embedded
operating system and a cross-compilation tool chain for a
Linux workstation to compile code on a PC. A PC-developed
application can be transferred to KoreBot’s flash or, by
using IP over USB, code can be compiled on a workstation
to be tested on KoreBot from a mounted filesystem.
KoreBot was originally designed to increase performance
and connectivity while offering low power consumption
for K-Team’s Koala mobile robot. With Korebot’s large
range of input power ( 3-30 V) and its 10 W embedded
power regulation, it is particularly well-suited for
upgrading an existing robot or prototyping a new robot —
from student competitions to advanced research.
KoreBot provides an expansion bus — the KB-250
Interface — dedicated to robotics extensions. The KB-250
interface is an open-standard interface to expand the
functionality of an existing ARM base platform in an easy
and fast way. In addition to using a full line of off-the-shelf
KB-250 modules, users can also design their own modules.
KB-250 modules can be used singly or stacked together to
give the needed functionality. KoreMotor is the first
KB-250 module developed to be used with Korebot. Other
extensions are now available or will be available soon.
For further information, please contact:
1151 Eagle Dr., #140
Loveland, CO 80537
Circle #67 on the Reader Service Card.
The LC8 AC Servo Motor
SMC Corporation — the
world’s largest manufacturer of pneumatic
automation products —
has announced the release
SERVO 07.2004 37