Design and Realization of PWM Direct Current Servo System Based on Linear Operational Power Amplifier Module

Platform servo system is an important part for many airborne platforms, especially for the airborne SAR. Because of the close connection between platform and antenna, the platform's working state is closely related with the final image quality. This paper will discuss how to use liner operational amplifier OPA2541's voltage comparing function to generate the demanded PWM signals which will drive electromotor to work well. The experiment results have showed that this usage of OPA2541 which proves well performance meets the project index demand.