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DC motor controller eyes mobile robots

Posted: 21 Jan 2009     Print Version  Bookmark and Share

Keywords:DC motor controller  mobile robotic  motors 

AX2860

Roboteq, Inc. has developed the AX2860 dual-channel DC motor controller capable of directly driving up to 120 A on each channel at up to 60 V.

Targeted at designers of mobile robotic vehicles, the controller accepts commands from standard R/C radio, analogue joystick or RS232 interface, and, when using the serial port, can be used to design fully or semi-autonomous robots by connecting it to single-board computers, wireless modems or Wi-Fi adapters.

The controller's two channels can be operated independently or combined to set the direction and rotation of a vehicle by coordinating the motors on each side. The motors may be operated in open- or closed-loop speed mode. The AX2860 includes inputs for two quadrature encoders up to 250kHz, and four limit switches, for precise speed and traveled distance measurement.

Intelligent current sensing and controlling automatically limit each channel's power output to 120 A, and an optional single-channel configuration version can be ordered, capable of driving a single load up to 240 A at 60 V. Other features include analogue and digital I/Os for accessories and sensors, thermal protection, programmable acceleration, short-circuit protection, input command watchdog and non-volatile storage of configuration parameters.

The AX2860 is packaged in a 9.0 x 5.5 x 1.6-in. extruded aluminium case, which also serves as a heat sink for its output power stage. It is available now at Rs.36,026.20 ($720) in single quantities, complete with cable and PC-based configuration software.

-Rich Pell
Industrial Control DesignLine





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