EXPERIMENT 07 · DC MOTOR

Push back against a load

How does the loop recover when the shaft load increases?

Try it in the current lab

Replay to around 4 seconds and tap the load. Change its duration or delete it to compare.

Add a short load pulse after the motor settles.

The lab recalculates after a setting changes. Pin a run before changing one variable; the response and control-effort plots share the same replay time. PID experiments also show the P/I/D terms; estimator experiments show measured and estimated states.

What the system is doing

A short load pulse slows the motor. Feedback raises voltage, then relaxes when the pulse ends.

L\dot{i}=V-Ri-K_e\omega,\qquad J\dot{\omega}=K_t i-b\omega-\tau_{load}

Open this experiment →Model and method →

Push back against a load

How does the loop recover when the shaft load increases?

Try it in the current lab

Replay to around 4 seconds and tap the load. Change its duration or delete it to compare.

Add a short load pulse after the motor settles.

What the system is doing

A short load pulse slows the motor. Feedback raises voltage, then relaxes when the pulse ends.

L\dot{i}=V-Ri-K_e\omega,\qquad J\dot{\omega}=K_t i-b\omega-\tau_{load}