Non-Fragile Robust Control for Lunar Rotary-Drill Spamling Technology

Abstract

Rotatory drilling is a key technology to lunar sampling mission. Model perturbation of rotatory drilling mechanism exists in lunar complex environment. And system disturbance always influences the control system performance. Robust of controller plays an important role in sampling mission. Perturbation and disturbance was analyzed in the state space description. The state feedback non fragile robust controller was induced with linear matrix inequality method. Simulation results proved that the controller is inner stable with bounded model perturbation and has suppression ability to disturbance.

Keywords

Lunar sampling / rotatory drilling / non fragile / robust control