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Neural Network Control by Error-Feedback Learning for Hydrostatic Transmissions with Disturbances and Uncertainties

  • Ngoc Danh Dang
  • Harald AschemannEmail author
Conference paper
  • 81 Downloads
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1196)

Abstract

This paper presents a decentralized control approach based on a neural network for a hydrostatic transmission. The bent-axis angle of the hydraulic motor is adjusted by a pure feedforward control law based on identified physical parameters, whereas the corresponding motor angular velocity is controlled using a combination of a generalized proportional-derivative (PD) controller and a multilayer perceptron with one hidden layer that is trained by an error-feedback learning approach and uses only measurable input variables. In this observer-free control structure, the neural network learns the inverse dynamics by minimizing the PD controller output and, as a consequence, an accurate tracking of the desired trajectory is achieved. As no physical modelling is required for the motor velocity control design, it can be considered as model-free. The tracking performance shows the robustness of the overall control structure for the hydrostatic transmission despite disturbances and uncertainties. The proposed control scheme is investigated by simulations first. Second, experimental results are presented taken from a dedicated test rig at the Chair of Mechatronics, University of Rostock. Finally, an experimental comparison with results from previous work is provided.

Keywords

Mechatronics Hydrostatic transmission Neural network Learning control Nonlinear control 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Chair of MechatronicsUniversity of RostockRostockGermany

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