Improving the Closed-Loop Tracking Performance Using the First-Order Hold Sensing Technique with Experiments
For control systems engineers, this provides a practical method to enhance tracking accuracy in digital control loops.
The paper proposes using first-order hold (FOH) sensing to improve closed-loop tracking performance, demonstrating via simulation and experiment on a pendulum setup that FOH reduces steady-state tracking error compared to zero-order hold (ZOH).
This paper proposes a new perspective in the enhancement of the closed-loop tracking performance by using the first-order hold (FOH) sensing technique. Firstly, the literature review and fundamentals of the FOH are outlined. Secondly, the performance of the most commonly used zero-order hold (ZOH) and that of the FOH are compared. Lastly, the detailed implementation of the FOH on a pendulum tracking setup is presented to verify the superiority of the FOH over the ZOH in terms of the steady state tracking error. The results of the simulation and the experiment are in agreement.