Longitudinal Active Load Relief Control of Launcher based on Fully-Actuated System Approach

This paper tackles the longitudinal load relief control problem of launcher during ascent phase. By doing so, the longitudinal control equation in the load feedback framework is firstly formulated and then transformed to a classical Sylvester equation. Due to fully characterized freedoms of the closed-loop system via the parameterized approach in fully-actuated system approach, the feedback gains can be optimized to simultaneously satisfy multiple control objectives involving closed-loop stabilization, load relief and low sensitivity of closed-loop poles. Finally, a numerical example is given to verify the proposed control method.