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Data-Driven Control for Continuum Robots Based on Discrete Zeroing Neural Networks
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DOI：10.1109/TII.2022.3204307.png)
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The effectiveness of continuous-time zeroing neural network (ZNN) (CZNN) in continuum robot control has been preliminarily verified. However, CZNN is not friendly to digital devices and hardware implementation. Although discrete ZNN (DZNN) has been investigated in other tasks, all the existing DZNNs are designed with fixed time steps, which cannot meet the needs of different tasks. This motivates us to develop a generic DZNN model with variable number of time steps and apply it to continuum robot control. In this article, we present a data-driven scheme based on CZNNs to learn the unknown kinematics of continuum robots and solve the kinematic control problem. Furthermore, a unified m-step forward discretization formula is derived to discretize the CZNN-based scheme into DZNN-based control algorithms. Finally, we take the 1-step and the 3-step algorithms as examples to show the discretization process, and verify their efficacy by simulations and experiments.
Keyword:
Robots
Kinematics
Mathematical models
Task analysis
Robot sensing systems
Recurrent neural networks
Informatics
Continuum robot
data driven
model free
tracking control
zeroing neural networks (ZNNs)
期刊
IF:
9.9
论文数:
8.6K
被引数:
6.0W
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