Trajectory Tracking Control of a Flexible Mobile Robot using Disturbance Observer

Abstract

This paper describes trajectory tracking control for a flexible mobile robot using a disturbance observer. The robot consists of a wheeled mobile mechanism and a flexible structure of four flexible beams and a work table. Trajectory tracking control is compound control of a disturbance observer and feedforward compensation two-degree-of-freedom (2DOF) controller. The feedforward compensation 2DOF controller consists of a feedforward controller and a state feedback controller. Experimental and numerical simulation results confirmed that trajectory tracking control of the robot work table is possible with trajectory control using the disturbance observer.