Abstract: This article introduces the technical characteristics of angle sensors, designs a stroke feedback measurement system for analog actuators based on angle sensors, and develops a new type of angle travel switch based on a three-axis angle sensor to address the issues of easy corrosion and jamming of mechanical contacts outside the mechanical travel switch, difficulty in adjusting the limit position, and insufficient adjustment margin. The measurement mode of a fully sealed and contactless travel switch is realized Full stroke positioning range and adjustable reset dead band. This article introduces the application of angle sensor in actuator stroke feedback measurement with examples, aiming to apply advanced angle measurement technology to large-scale thermal power generating units, and continuously introduce advanced technology to enhance the competitiveness of enterprises.