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website: Add FAQ entry for checking that the arm has reached the target - #643

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kou merged 1 commit into
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kou:docs/faq-reach-check
Oct 26, 2026
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kou merged 1 commit into
enactic:mainfrom
kou:docs/faq-reach-check

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@kou kou commented Oct 26, 2026

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The joint trajectory controllers don't check the goal tolerance in the default configuration of ROS 2 control, like the default of joint_trajectory_controller. A trajectory can succeed even if the arm stops short of the target because of the steady-state error.

Add an FAQ entry that recommends checking the error at the end effector and explains that the goal tolerance (constraints.<joint>.goal) can be set for the task and gains.

The joint trajectory controllers don't check the goal tolerance in the
default configuration of ROS 2 control, like the default of
`joint_trajectory_controller`. A trajectory can succeed even if the arm
stops short of the target because of the steady-state error.

Add an FAQ entry that recommends checking the error at the end effector
and explains that the goal tolerance (`constraints.<joint>.goal`) can be
set for the task and gains.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Copilot AI balanced review requested due to automatic review settings October 26, 2026 07:15

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kou merged commit a8b80a9 into enactic:main Oct 26, 2026
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kou deleted the docs/faq-reach-check branch October 26, 2026 07:16
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