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Non-Linear Prediction-Based Trajectory Tracking for Non-Holonomic Mobile Robots

 

This work addresses the trajectory tracking problem for a non-holonomic differential drive mobile robot with a constant time delay h at the input signal. To compensate for the adverse effects of the input time delay on the vehicle, a non-linear prediction-observer scheme based on a sub-prediction strategy that asymptotically estimates the future values of the state, h units of time ahead was introduced, and, thanks to the characteristics of the system, a condition which depends only on the gains of the predictor-observer is obtained for the convergence of the predicted states. Non-linear feedback based on the estimated future state is proposed to tackle the trajectory tracking problem of a mobile robot. The closed-loop system describing the prediction strategy and trajectory tracking solution was formally analyzed, showing the asymptotic convergence of the prediction and tracking errors to the origin. Numerical and real-time experiments were performed to evaluate the prediction-based control scheme, which show adequate performance

Autores:

Martín Velasco Villa

https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=10309126

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24/02/2025 01:13:09 p. m.