Glossary · Motion control and drives
Dynamic speed adaptation
Also known as: Load-dependent speed reduction
German: Dynamische Geschwindigkeitsanpassung
In stepper motor control, dynamic speed adaptation is a driver function that lowers the motor speed automatically when the load exceeds the available torque, instead of losing steps or stalling, and returns to the commanded speed when the load decreases.
- Motion control
In one sentence
Dynamic speed adaptation slows a stepper motor automatically on overload instead of losing steps, then returns to the commanded speed.
Example
A stepper-driven dough mixer slows down when the dough gets stiff and speeds up again as it softens, without stopping or losing its position.
How it applies
- Engineering: The driver trades speed for torque within limits, using the load estimate. Vendors use trade names, for example ADI Trinamic DcStep; keep in mind that product names change.
- Commissioning: Set the minimum speed below which the axis reports a stall; the controller must know that the move takes longer than planned.
- Operation: A motor slowing down under load is often this protective function at work, not a fault. Cycle times grow while the overload lasts.
- Documentation: Tell operators and service staff that a temporary slowdown under heavy load is intended behavior, when it becomes a fault (for example a stall message) and what to check. Don't describe the slowdown as a speed-limiting safety function.