Comparison of two high-frequency injection methods with LADRC for space antenna deployable structures

To improve the reliability of the system, the subsequent space antenna deployment structure plans to use permanent magnet synchronous motors. In this paper, two high-frequency injection methods with LADRC are simulated and analyzed, and the feasibility and effectiveness of the two methods are verified, and the results show that the high-frequency square-wave voltage injection method is the preferred sensorless control scheme.