one-dimensional control system for a linear motor of a two-dimensional nanopositioning stage using commercial control hardware

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ID: 150744
2018
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Abstract
A two-dimensional (2D) nanopositioning platform stage (NanoPla) is in development at the University of Zaragoza. To provide a long travel range, the actuators of the NanoPla are four Halbach linear motors. These motors present many advantages in precision engineering, and they are custom made for this application. In this work, a one-dimensional (1D) control strategy for positioning a Halbach linear motor has been developed, implemented, and experimentally validated. The chosen control hardware is a commercial Digital Motor Control (DMC) Kit from Texas Instruments that has been designed to control the torque or the rotational speed of rotative motors. Using a commercial control hardware facilitates the applicability of the developed control system. Nevertheless, it constrains the design, which needs to be adapted to the hardware and optimized. Firstly, a dynamic characterization of the linear motor has been performed. By leveraging the dynamic properties of the motor, a sensorless controller is proposed. Then, a closed-loop control strategy is developed. Finally, this control strategy is implemented in the control hardware. It was verified that the control system achieves the working requirements of the NanoPla. It is able to work in a range of 50 mm and perform a minimum incremental motion of 1 μm.
Reference Key
prez2018micromachinesone-dimensional Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lucía Candela Díaz Pérez;Marta Torralba Gracia;José Antonio Albajez García;José Antonio Yagüe Fabra
Journal chemistryopen
Year 2018
DOI
10.3390/mi9090421
URL
http://www.mdpi.com/2072-666X/9/9/421
Keywords Keywords not found

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