How do you design a low-pass filter to eliminate high-frequency noise in a control loop?
High-frequency noise can interfere with the performance and accuracy of a control loop, causing unwanted oscillations, errors, or instability. To reduce the effects of noise, you can design a low-pass filter that attenuates the high-frequency components of the signal and passes the low-frequency ones. In this article, you will learn how to design a low-pass filter for a control loop using four steps: choosing the filter type, determining the cutoff frequency, calculating the filter components, and testing the filter response.