Control Systems — question 9 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
You're designing the control loop for a single-axis gimbal that must track a moving target smoothly. You have two options for the derivative term: compute it from the raw position error each sample, or run the error through a low-pass filter first and differentiate the filtered signal. The raw version reacts fastest to real changes but the gimbal's position sensor has visible quantization noise. Walk through what goes wrong if you use the raw derivative, why filtering fixes it, and what you give up by adding that filter.