Kinematics Verification
This tutorial demonstrates how to verify the forward and inverse kinematics of the Agilebot robot.
Overview
Kinematics verification is used to check the relationship between the robot's joint configuration and end-effector position. This includes:
- Forward Kinematics: Calculate end-effector position from joint angles
- Inverse Kinematics: Calculate joint angles from end-effector position
Prerequisites
- Completed Isaac Sim Environment Setup
- Completed Display Agilebot Robot Model in Isaac Sim
Forward Kinematics Verification
Using Project Demo Script
cd agilebot_isaac_sim
python agilebot_integration/demos/fk_verification.pyForward Kinematics Description
Forward kinematics is used to verify if the robot's joint configuration is correct and if the end-effector position meets expectations.
Inverse Kinematics Verification
Using Project Demo Script
cd agilebot_isaac_sim
python agilebot_integration/demos/ik_verification.pyInverse Kinematics Description
Inverse kinematics is used to verify if the robot can reach specified end-effector positions.
IK Solvers
Agilebot robots support various IK solvers:
| Solver | Description | Use Case |
|---|---|---|
| Jacobian Pseudo-inverse | Jacobian pseudo-inverse method | General cases |
| Damped Least Squares | Damped least squares method | Near singularities |
| Jacobian Transpose | Jacobian transpose method | Simple cases |
Configuration Parameters
Kinematics Parameters
| Parameter | Description | Default Value |
|---|---|---|
ik_solver | IK solver type | Jacobian Pseudo-inverse |
ik_tolerance | IK solving tolerance | 0.001 m |
ik_max_iterations | IK maximum iterations | 100 |
joint_limits | Joint limits | Based on robot model |
Customizing Kinematics Verification
Modify Joint Positions
Modify Target Positions
Modify IK Solver
Common Issues
Q: IK solving fails
A: Check if the target position is within the robot's workspace. Try different IK solvers or adjust the ik_tolerance parameter.
Q: Robot motion is discontinuous
A: Check if joint limits are correctly set. Ensure joint positions are within valid ranges.
Q: Forward kinematics results are incorrect
A: Check if the robot model is loaded correctly. Verify that joint configurations meet expectations.