One-Dimensional Control System for a Linear Motor of a Two-Dimensional Nanopositioning Stage Using Commercial Control Hardware

Diaz Perez, L.C. (Universidad de Zaragoza) ; Torralba Gracia, M. ; Albajez Garcia, J.A. (Universidad de Zaragoza) ; Yague Fabra, J.A. (Universidad de Zaragoza)

Resumen: 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 mu m.

Idioma: Inglés

DOI: 10.3390/mi9090421

Año: 2018

Publicado en: Micromachines 9, 9 (2018), 421 [16 pp]
ISSN: 2072-666X

Factor impacto JCR: 2.426 (2018)

Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 25 / 61 = 0.41 (2018) - Q2 - T2
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 55 / 94 = 0.585 (2018) - Q3 - T2

Factor impacto SCIMAGO: 0.536 - Control and Systems Engineering (Q2) - Mechanical Engineering (Q2) - Electrical and Electronic Engineering (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/FSE
Financiación: info:eu-repo/grantAgreement/ES/MINECO/DPI2015-69403-C3-1-R

Tipo y forma: Article (Published version)

Área (Departamento): Área Ing. Procesos Fabricación (Dpto. Ingeniería Diseño Fabri.)