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research article

High-precision control of a robotic arm using frequency-based data-driven methods

Schuchert, Philippe  
•
Karimi, Alireza  
February 1, 2025
Control Engineering Practice

Next-generation motion control systems require fast and precise control. However, advanced control strategies often rely on complex and costly system models. Data-driven methods have been proposed to design high-performance controllers without requiring a parametric model of the system. In particular, methods using frequency response functions (FRFs) have been widely applied to mechatronic systems due to their good performance, and the industry's familiarity with obtaining FRFs. This paper applies a recently developed method to design a controller for an industrial robotic arm with three translational degrees of freedom, using only the FRF of the robot around different operating points. Focused on motion control, the objective is to attain the desired reference tracking performance through the design of a linear-parameter-varying (LPV) two-degree-of-freedom (2DoF) controller. Performance is further improved by tuning an additional filter to compensate for inaccuracies in the transmission.

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Name

10.1016_j.conengprac.2024.106175.pdf

Type

Main Document

Version

Published version

Access type

openaccess

License Condition

CC BY

Size

2.44 MB

Format

Adobe PDF

Checksum (MD5)

cbf9ea333611ec3d3788f848e4a1842e

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