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- W4312117425 abstract "Accurate trajectory tracking is a paramount objective when a mobile robot must perform complicated tasks. In high-speed movements, time delays appear when reaching the desired position and orientation, as well as overshoots in the changes of orientation, which prevent the execution of some tasks. One of the aspects that most influences the tracking performance is the control system of the actuators of the robot wheels. It usually implements PID controllers that, in the case of low-cost robots, do not yield a good tracking performance owing to friction nonlinearity, hardware time delay and saturation. We propose to overcome these problems by designing an advanced process control system composed of a PID controller plus a prefilter combined with a Smith predictor, an anti-windup scheme and a Coulomb friction compensator. The contribution of this article is the motor control scheme and the method to tune the parameters of the controllers. It has been implemented in a well-known low-cost small mobile robot and experiments have been carried out that demonstrate the improvement achieved in the performance by using this control system." @default.
- W4312117425 created "2023-01-04" @default.
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- W4312117425 date "2022-12-23" @default.
- W4312117425 modified "2023-09-27" @default.
- W4312117425 title "Advanced Motor Control for Improving the Trajectory Tracking Accuracy of a Low-Cost Mobile Robot" @default.
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- W4312117425 doi "https://doi.org/10.3390/machines11010014" @default.
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