Motor Controller Interfaces

Source: ros2-copilot-skills motor controller interface skill

Why This Matters

The motor controller boundary is where high-level intent becomes physical motion. If the command semantics, fault handling, and feedback path are underspecified, the robot becomes hard to tune and harder to trust.

Distilled Takeaways

• A good motor-controller interface defines commands, feedback, and faults explicitly.
• Command semantics should match what the hardware can actually guarantee.
• Faults need to be visible to the rest of the robot, not silently swallowed.
• The interface should be stable enough that upstream software can reason about it.

Practical Guidance

• Decide whether the interface is velocity, effort, position, or some higher-level contract.
• Expose controller fault and enable state clearly.
• Validate timing and saturation behavior under real loads.
• Keep emergency-stop and watchdog behavior aligned with the controller design.

Corroborating References

• ros2_control documentation
• geometry_msgs Twist definition

When to Read the Original Source

Go to the original skill when you want the practical advice for shaping a controller interface that the rest of a ROS 2 robot can use safely and predictably.