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Bug fix: JointTrajectoryAction (Rebased bug fix from Feb5)#86

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psarakisz89 wants to merge 1 commit intoros-industrial:indigo-develfrom
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Bug fix: JointTrajectoryAction (Rebased bug fix from Feb5)#86
psarakisz89 wants to merge 1 commit intoros-industrial:indigo-develfrom
psarakisz89:indigo-devel

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@psarakisz89
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JointTrajectoryAction can now handle correctly cases where a single trajectory containing all robots (2 arms 2 torsos) of motoman is used.

Before this fix the state of the robot changed at "LOST" after some seconds and the trajectory was aborted.

// A parameter named topics_list contains the respective information for each of the groups

std::string value;
if(!ros::param::search("topics_list", value))
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This error message helps people when the "topics_list" parameter cannot be found. Was it removed for a reason?

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It might have been removed for debugging reasons. It is safe to bring it back.

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Can you do this? I think you might need to rebase this PR on the current version of indigo-devel.

@shaun-edwards
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@psarakisz89, sorry it took me so long to review. I had a few comments (see above). I'm also hoping you could walk me through this change. I do not have access to a dual arm system, so it is hard for me to review these changes. I also don't believe it's possible to "simulate" the robot (let me know if I am incorrect).

@psarakisz89
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@shaun-edwards, I will help you as much as I can with the change and reviewing the changes! We have a dual arm manipulator available and if needed I can test something on it.

I guess what you are asking about the "simulation" of the robot is, if it is possible to simulate the control box and the real robot's behavior. I guess you can try it but there is a limit on how much accuracy a simulation will have. Even with a "perfect" simulator you may miss something!

@shaun-edwards
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@psarakisz89, my question regarding simulation was whether there is a way simulate the multi-group nodes below the joint_trajectory_action. With the old single group nodes, this was possible. As near as I can tell, this capability does not exist for multiple groups.

@shaun-edwards
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@psarakisz89, are you able to address the comments above? Also, could you rebase your code. Some recent changes to the motoman libraries are causing conflicts.

@psarakisz89
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Hello Shaun.

I am currently away from the lab. I will address the issues as soon as possible. Sorry for the delay.

@gavanderhoorn
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We're going to merge this in, but as part of #259.

There were outstanding issues with this PR, which @shaun-edwards identified, but were never fixed.

So closing this one.

Thanks @psarakisz89 for the initial PR.

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3 participants