首页|Pose error prediction and real-time compensation of a 5-DOF hybrid robot

Pose error prediction and real-time compensation of a 5-DOF hybrid robot

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This paper proposes a new calibration method for a 5-DOF hybrid robot, concentrating particularly on addressing the contradiction between measurement efficiency and calibration accuracy and the real-time compensation with high precision. The approach involves two successive steps: (1) an error prediction model based on a back propagation neural network (BPNN) and the Denavit-Hartenberg (D-H) method is established by the strategy of pose error decomposition; (2) an embedded joint error compensator based on a BPNN is designed to achieve real-time compensation with high precision. Experimental verification shows that the maximum position/orientation errors can be reduced by 87.05%/85.62% over the entire workspace of the robot after calibration.

CalibrationError predictionHybrid robotNeural networkReal-time compensation

Liu H.、Yan Z.、Xiao J.

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Key Laboratory of Modern Mechanisms and Equipment Design of The State Ministry of Education Tianjin University

2022

Mechanism and Machine Theory

Mechanism and Machine Theory

EISCI
ISSN:0094-114X
年,卷(期):2022.170
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