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Posted by pogo on November 21, 2008, 6:34 pm
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> Dear Robotics Experts,
>
> I am looking for high torque continuous servo motors for a all-wheel
> drive mobile robotic platform. Total weight of the platform will be
> approximately 30kg, including batteries.
>
> This platform will be used for robotics experiment (not for game) and
> I want to be able to control all wheels accurately both in speed and
> position modes.
>
> I've considered using geared DC motors with encoders, DC servo drivers
> and motion controllers. I've also considered using Dynamixel RX-64
> continuous turn servo motors which can be daisy chained and all motors
> can be controlled with a single RS485 line. This is an easy solution
> but an expensive. Because as you can see on the following URLs
> Dynamixel RX-64 is expensive.
>
>
http://www.robotshop.ca/home/suppliers/robotis-en/robotis-rx-64-serial-servo.html
> http://www.tribotix.com/Products/Robotis/Products.htm
>
> Do you know any better (lower cost) solution?
> Is there any cheaper alternative to Dynamixel RX-64 ?
>
> Merci,
>
> Roberto
Have you considered stepper motors and something like a Phidgets controller ?
http://www.phidgets.com/products.php?product_id=1062
Sounds like it might be a good fit.
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>
> I am looking for high torque continuous servo motors for a all-wheel
> drive mobile robotic platform. Total weight of the platform will be
> approximately 30kg, including batteries.
>
> This platform will be used for robotics experiment (not for game) and
> I want to be able to control all wheels accurately both in speed and
> position modes.
>
> I've considered using geared DC motors with encoders, DC servo drivers
> and motion controllers. I've also considered using Dynamixel RX-64
> continuous turn servo motors which can be daisy chained and all motors
> can be controlled with a single RS485 line. This is an easy solution
> but an expensive. Because as you can see on the following URLs
> Dynamixel RX-64 is expensive.
>
>