Using PID Controller and SDRE methods for tracking control of Spacecrafts in Closed-Rendezvous Process

Abstract

Rendezvous process of spacecrafts is one of major issues in study of aerospace engineering. Tracking control in Rendezvous process is very complex due to the need to fulfill the conditions and constraints to determine the control forces to bring Chaser toward Target. The paper will implement the control of the trajectory of the relative translation movement between Chaser and Target in the Closed-Rendezvous stage through two different approaches: the first using PID Controllers, and the second using the SDRE (State Dependent Riccati Equation) technique. Then based on obtained results, a comparison between two methods is carried out.

Keywords

• Closed-Rendezvous
• trajectory control
• PID controller
• SDRE