Abstract

Motor controlled systems that require precise angle feedback are abundant across many application settings. For instance, autonomous mobile robots (for example, vacuum cleaners, lawnmowers, or warehouse transports) rely on accurate feedback to properly guide the machine to its intended location. Additionally, manufacturing 6-axis robotic arms and collaborative robits (cobots) require precise control to ensure exactness is assembly for improved throughput and optimal quality. In all systems, mechanical alignment tolerances and signal chain factors will contribute to observed measured angle error for magnetic sensors. This report will discuss magnet selection, sensor placement, and how these electrical and mechanical error sources impact measurement. Finally, processes for calibrating angle error will be presented to show how to achieve the optimal angle accuracy for any system.