scholarly journals Application of Nonlinear Controller Design Based on a Geometric Consideration in the Phase Plane Behavior for Multi Input Nonlinear Systems

2015 ◽  
Vol 51 (6) ◽  
pp. 430-439
Author(s):  
Hiroshi SUZUKI ◽  
Kazuma SEKIGUCHI ◽  
Mitsuji SAMPEI
Keyword(s):  
Nonlinear Systems ◽  
Phase Plane ◽  
Controller Design ◽  
Nonlinear Controller ◽  
Geometric Consideration ◽  
Nonlinear Controller Design

scholarly journals Nonlinear Controller Design for a Flexible Spacecraft

2020 ◽  
Vol 67 (4) ◽  
pp. 1500-1520
Author(s):  
Jose Luis Redondo Gutiérrez ◽  
Ansgar Heidecker
Keyword(s):  
Controller Design ◽  
Flexible Structures ◽  
Rigid Motion ◽  
Nonlinear Controller ◽  
Assumed Mode Method ◽  
Control Approach ◽  
Mode Method ◽  
Study Case ◽  
Nonlinear Controller Design ◽  
Assumed Mode

AbstractThis paper combines the nonlinear Udwadia-Kalaba control approach with the Assumed Mode Method to model flexible structures and derives an attitude controller for a spacecraft. The study case of this paper is a satellite with four flexible cantilever beams attached to a rigid central hub. Two main topics are covered in this paper. The first one is the formulation of the equation of motion and the second one is the nonlinear controller design. The combination of these two techniques is able to provide a controller that damps the vibration of a flexible structure while achieving the desired rigid-motion state.

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