Motion Control System for Industrial Scenarios Based on Electromagnetic Encoders
Paredes, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Moya Lara, Ana (Hohner Automation)
Berenguel-Alonso, Miguel (Centre Tecnològic de Catalunya)
Gonzalez, David (Hohner Automation)
Bruguera, Pep (Hohner Automation)
Delgado Simao, Claudia (Centre Tecnològic de Catalunya)
Martín, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)

Data:	2023
Resum:	In this article, a complete system useful for the measurement of the absolute position, velocity, and acceleration of moving objects in industrial scenarios (such as conveyor transport devices, elevators, escalators, and other mechanical systems) is presented. The proposed system contains an electromagnetic encoder consisting of a pair of chains of metallic patches screen-printed on a rubber belt. In one of the chains (designated as clock/velocity chain), the patches are printed at predefined periodic positions. Such clock chain also generates the clock signal necessary to read the other chain (position chain), with patches either present (binary state "1") or absent (binary state "0") at their predefined positions. The system includes a reader based on a transmission line with three resonators etched on the ground plane and fed with three harmonic signals. Such three elements are complementary split ring resonators (CSRRs), which are sensitive to the presence of patches at short distance on top of them, and therefore, they are used to detect the patches as the encoder moves with regard to the reader. By encoder motion, the patches generate three amplitude modulation (AM) signals, providing the velocity (and acceleration), the absolute encoder position, and the motion direction. A prototype system, including the encoder, the reader, and the associated electronics, is designed, fabricated, and validated.
Ajuts:	Agencia Estatal de Investigación PID2019-103904RB-I00 Agencia Estatal de Investigación RTC-2017-6303-7 Agencia Estatal de Investigación PDC2021-121085-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-192
Nota:	Altres ajuts: European Union Next Generation Europa/Plan de Recuperación, Transformación y Resilencia (EU/PRTR) ; Institució Catalana de Recerca i Estudis Avançats
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Electromagnetic encoders ; Position sensors ; Microwave sensors ; Motion control ; Printed electronics ; Microwave technology
Publicat a:	IEEE transactions on instrumentation and measurement, Vol. 72 (May 2023) , ISSN 0018-9456

DOI: 10.1109/TIM.2023.3271758

Disponible a partir de: 2025-05-31 Postprint

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