Implements inverse kinematics and grasping control for robot arms in Isaac Sim.
npx skills add https://github.com/isaac-sim/IsaacSim --skill manipulation-ik
Please help me install this Agent Skill. Skill: manipulation-ik Source: https://github.com/isaac-sim/IsaacSim/tree/main/skills/manipulation-ik Command: npx skills add https://github.com/isaac-sim/IsaacSim --skill manipulation-ik
Controlling a robot arm to reach, grasp, transport, and place objects in Isaac Sim requires choosing between multiple IK stacks, configuring grasp frames, and tuning solver parameters, and mistakes like hardcoded grasp offsets or wrong Jacobian slicing cause silent failures or PhysX explosions.
get_jacobian_matrices with damped-least-squares, pseudoinverse, transpose, or SVD solvers, including virtual-base DOF slicing rules.isaacsim.robot.poser.RobotPoser for solving IK, storing reusable named poses like "pick_position", and exporting/importing pose libraries.RmpFlowController and PINK PinkIKController for reactive trajectories, plus FixedJoint and SurfaceGripper grasp patterns with a three-checkpoint validation loop.Use the manipulation-ik skill to set up differential IK control for a Franka arm to pick and place an object in Isaac Sim.
High-intent search queries and answers about installing and using this skill.
Use differential IK on the Articulation prim by calling get_jacobian_matrices, computing the 6-DOF pose error, and solving with damped-least-squares to get joint deltas. Alternatively use RobotPoser from isaacsim.robot.poser for schema-native IK with named pose storage.
Use differential IK for direct end-effector control, RobotPoser for offline pose authoring and replay, cuMotion RmpFlowController for obstacle-aware reactive motion, and PinkIKController for task-hierarchy IK with joint limits. Lula is legacy and not recommended for new work.
Common causes are forgetting to slice past virtual base DOFs in the Jacobian, hardcoding the FixedJoint grasp offset instead of computing it at contact time, and overly aggressive IK gains. Start with damping 0.1 and max delta 0.02 rad per step.
Use UsdPhysics FixedJoint for rigid grasps, computing the gripper-to-object relative transform at contact, or SurfaceGripper for vacuum-style attachment via the surface gripper interface. Always define a grasp frame with IsaacSiteAPI before running IK.
Pure differential IK on under-actuated arms fails during large lateral transport, near singularities, and at joint limits. Use a hybrid approach: IK for precision phases like approach and placement, joint-space interpolation for long transport moves.
AmirTlinovSet up NVIDIA Isaac Sim environments, import URDF/MJCF assets, and configure sensors.
isaac-simBridge Isaac Sim simulation topics to ROS 2 topics via OmniGraph.
NVlabsGenerate USD scene files from natural language descriptions for robot manipulation benchmarks.
nebiusOrchestrate Isaac Lab reinforcement learning simulations on Nebius GPU clusters.