How to correctly configure xArm6 actuators in Isaac Lab (especially the gripper)?

Isaac Sim Version: 5.0.0

Operating System: Ubuntu 22.04

Topic Description

Hi everyone,

I’m trying to configure actuators for xArm6 in Isaac Lab for RL training.
I followed the official Franka + Robotiq example and attempted to split the actuators into:

  • arm actuators

  • a main gripper_drive joint

  • additional follower joints (similar to the mimic behavior)

However I’m seeing strange behavior:

  • If I only configure the drive_joint, the arm behaves normally but the gripper won’t close

  • If I split the gripper into multiple actuator groups (to mimic how the real parallel gripper works), the whole arm becomes unstable or behaves incorrectly

I am unsure what caused this issue, What is the correct way to configure xarm actuators in Isaac Lab?

Thank you for any help or insights!

Is the official Franka + Robotiq example you mentioned included directly in Isaac Lab, or is it part of the Isaac Sim documentation? Could you clarify which documentation section lists the reference implementation? This will help me find the correct configuration details for actuator grouping, especially for the gripper setup.

Hello!

We noticed that this topic hasn’t received any recent responses, so we are closing it for now to help keep the forum organized.

If you’re still experiencing this issue or have additional questions, please feel free to create a new topic with updated details. When doing so, we recommend mentioning or linking to this original topic in your new post—this helps provide context and makes it easier for others to assist you.

Thank you for being part of the NVIDIA Isaac Sim community.

Best regards,
The NVIDIA Isaac Sim Forum Team