Adaptive Deflection-Limiting Control for Slewing Flexible Space Structures

Abstract

This paper proposes an adaptive deflection-limiting input shaping technique for slewing flexible space structures. The bending moment at the root of the flexible appendage is measured and used to adjust the control parameters. This measurement is more easily obtained than the tip acceleration on a space structure and it is very useful for avoiding damage to the flexible structure. The control timing of the input shaping is automatically tuned during the slewing motion to limit the induced bending moment and to eliminate the residual vibration. The effectiveness of the adaptive deflection-limiting input shaping control is verified experimentally and compared with the traditional input shaping control methods.