Search found 58 matches

by Craig
Fri Nov 02, 2012 3:21 pm
Forum: Communications
Topic: How do I communicate with an RMP?
Replies: 7
Views: 18179

Re: How do I communicate with an RMP?

This is not a typical problem, however, USB performance on the Deuce board architecture systems is known to have issues with newer versions of windows. For control of an OMNI platform you should really be using the CAN bus because the timing of the USB is difficult to synchronize. If you want to pus...
by Craig
Thu Oct 25, 2012 5:30 pm
Forum: Centralized Controller Platforms
Topic: How is the turn rate of the RMP computed?
Replies: 8
Views: 10031

Re: How is the turn rate of the RMP computed?

This could be one of two things. If you are using our standard python OCU: The standard OCU apply's a deadband to the input in order to improve performance around 0. This results in the command being about 10% less than the maximum setpoint. If you change the code for the OCU to apply an exponential...
by Craig
Tue Oct 23, 2012 10:29 am
Forum: Centralized Controller Platforms
Topic: Recommended tire pressure for 440LE
Replies: 1
Views: 3226

Re: Recommended tire pressure for 440LE

We recommend 6 psi as the best all around pressure. Heavier loads require additional pressure up to about 9 psi. However, the additional pressure decreases the damping caused by the tires and makes the platform bouncy at high speeds.

/Craig
by Craig
Tue Oct 23, 2012 10:28 am
Forum: Centralized Controller Platforms
Topic: PythonDemoOCU on Linux
Replies: 1
Views: 3301

Re: PythonDemoOCU on Linux

Python is a fairly portable language it should be a trivial task to get the appropriate package installed for linux (depending on the flavor your using). With the exception of the CAN libraries just about all of the libraries are open source.

/Craig
by Craig
Wed Oct 10, 2012 5:47 pm
Forum: Deuce Board Platforms
Topic: Question about RMP 400 traction
Replies: 5
Views: 12468

Re: Question about RMP 400 traction

The gain scheduling is more for the balancing platforms than the non-balancing ones. I don't think that will help. 185lbs on the RMP400 is really not a problem with properly inflated tires. I think if you use higher commands you will have behavior more like you are looking for; 2.2 deg/s would resul...
by Craig
Wed Oct 10, 2012 11:50 am
Forum: Deuce Board Platforms
Topic: Question about RMP 400 traction
Replies: 5
Views: 12468

Re: Question about RMP 400 traction

Hi, Your observation about battery voltage is somewhat un-related to your problem. On high traction surfaces(asphalt or carpet) the current demanded by the motors for scrub steering is quite high. As the system heats up it limits the maximum current and hence the maximum torque which can be applied ...
by Craig
Wed Oct 10, 2012 11:06 am
Forum: Centralized Controller Platforms
Topic: Is there a stop command?
Replies: 6
Views: 10801

Re: Is there a stop command?

Luca, Thank you for taking the time to clarify. I believe I understand much better now. I think your problem is in the conversion to IEEE 754. 1 in IEEE 754 is 0x3F80000 0 in IEEE 754 is 0x0000000 In the RMP commands are normalized -1 to 1 based on the target you set for the maximum velocity or acce...
by Craig
Tue Oct 09, 2012 11:48 am
Forum: Communications
Topic: transmission ratio question
Replies: 3
Views: 7450

Re: transmission ratio question

We only offer the standard gearbox with the 24.26 ratio
by Craig
Tue Oct 09, 2012 11:45 am
Forum: Centralized Controller Platforms
Topic: canlib32.lib and canlib32.dll
Replies: 1
Views: 3227

Re: canlib32.lib and canlib32.dll

These files are used to access the Kvaser USB to CAN hardware. They are not written by Segway but are provided by the Kvaser hardware manufacturer.
by Craig
Tue Oct 09, 2012 11:43 am
Forum: Centralized Controller Platforms
Topic: whats difference in system program between RMP440 and 400
Replies: 8
Views: 17009

Re: whats difference in system program between RMP440 and 40

I am happy to answer direct questions. However, I do not know how to respond to "Please tell me more about what we do when we install the following files". We've run through the install many times and it typically just works. If you are having specific issues getting a module to work or the python c...