Real-Time Hardware-in-the-Loop Emulation of Path Tracking in Low-Cost Agricultural Robots

Author:

Moreno Ingrid J.12ORCID,Ouardani Dina1ORCID,Chaparro-Arce Daniel1ORCID,Cardenas Alben1ORCID

Affiliation:

1. Research Group in Industrial Electronics (GREI), Electrical and Computer Engineering Department, University of Quebec at Trois-Rivieres, Trois-Rivieres, QC G8Z 4M3, Canada

2. Electrical Engineering Department, Universidad Industrial de Santander (UIS), Bucaramanga 680002, Colombia

Abstract

Reducing costs and time spent in experiments in the early development stages of vehicular technology such as off-road and agricultural semi-autonomous robots could help progress in this research area. In particular, evaluating path tracking strategies in the semi-autonomous operation of robots becomes challenging because of hardware costs, the time required for preparation and tests, and constraints associated with external aspects such as meteorological or weather conditions or limited space in research laboratories. This paper proposes a methodology for the real-time hardware-in-the-loop emulation of path tracking strategies in low-cost agricultural robots. This methodology enables the real-time validation of path tracking strategies before their implementation on the robot. To validate this, we propose implementing a path tracking strategy using only the information of motor’s angular speed and robot yaw velocity obtained from encoders and a low-cost inertial measurement unit (IMU), respectively. This paper provides a simulation with MATLAB/Simulink, hardware-in-the-loop with Qube-servo (Quanser), and experimental results with an Agribot platform to confirm its validity.

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Automotive Engineering

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