COMPUTED TORQUE CONTROL FOR A SPATIAL DISORIENTATION TRAINER

Jelena Vidaković, Vladimir Kvrgić, Mihailo Lazarević, Pavle Stepanić

DOI Number
10.22190/FUME190919003V
First page
269
Last page
280

Abstract


A development of a robot control system is a highly complex task due to nonlinear dynamic coupling between the robot links. Advanced robot control strategies often entail difficulties in implementation, and prospective benefits of their application need to be analyzed using simulation techniques. Computed torque control (CTC) is a feedforward control method used for tracking of robot’s time-varying trajectories in the presence of varying loads. For the implementation of CTC, the inverse dynamics model of the robot manipulator has to be developed. In this paper, the addition of CTC compensator to the feedback controller is considered for a Spatial disorientation trainer (SDT). This pilot training system is modeled as a 4DoF robot manipulator with revolute joints. For the designed mechanical structure, chosen actuators and considered motion of the SDT, CTC-based control system performance is compared with the traditional speed PI controller using the realistic simulation model. The simulation results, which showed significant improvement in the trajectory tracking for the designed SDT, can be used for the control system design purpose as well as within mechanical design verification.

Keywords

Computed Torque Control, Robot, Motion Control, Spatial Disorientation

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References


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DOI: https://doi.org/10.22190/FUME190919003V

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ISSN: 2335-0164 (Online)

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