Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity
This paper presents, for the first time, an absolute linear electromagnetic encoder consisting of a rubber belt with two chains of screen-printed metallic inclusions (rectangular patches). The position, velocity, and direction of the belt (the moving part) is determined by detecting the inclusions w...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/5/2044 |
| _version_ | 1797473674976034816 |
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| author | Ferran Paredes Cristian Herrojo Ana Moya Miguel Berenguel Alonso David Gonzalez Pep Bruguera Claudia Delgado Simao Ferran Martín |
| author_facet | Ferran Paredes Cristian Herrojo Ana Moya Miguel Berenguel Alonso David Gonzalez Pep Bruguera Claudia Delgado Simao Ferran Martín |
| author_sort | Ferran Paredes |
| collection | DOAJ |
| description | This paper presents, for the first time, an absolute linear electromagnetic encoder consisting of a rubber belt with two chains of screen-printed metallic inclusions (rectangular patches). The position, velocity, and direction of the belt (the moving part) is determined by detecting the inclusions when they cross the stator (the static part). The stator is a microstrip line loaded with three complementary split ring resonators (CSRRs), resonant elements exhibiting a resonance frequency perturbed by the presence of inclusions on top of them (contactless). The line is fed by three harmonic signals tuned to the resonance frequencies of the CSRRs. Such signals are generated by a voltage-controlled oscillator (VCO) managed by a microcontroller. The sensed data are retrieved from the pulses contained in the envelope functions of the respective amplitude modulated (AM) signals (caused by the belt motion) generated at the output port of the line. One of the signals provides the absolute belt position, determined by one of the chains, the encoded one. The information relative to the velocity and motion direction is contained in the other AM signals generated by the motion of the other chain, periodic, and thereby, uncoded. The spatial resolution of the system, a figure of merit, is 4 mm. Special emphasis is devoted to the printing process of the belt inclusions. |
| first_indexed | 2024-03-09T20:20:44Z |
| format | Article |
| id | doaj.art-be31ce99e6b8473ba0f6e7b9e5d9dcf7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T20:20:44Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-be31ce99e6b8473ba0f6e7b9e5d9dcf72023-11-23T23:50:14ZengMDPI AGSensors1424-82202022-03-01225204410.3390/s22052044Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and VelocityFerran Paredes0Cristian Herrojo1Ana Moya2Miguel Berenguel Alonso3David Gonzalez4Pep Bruguera5Claudia Delgado Simao6Ferran Martín7CIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainCIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainEurecat, Centre Tecnològic de Catalunya, Parc Científic i de la Innovació TecnoCampus, 08302 Mataró, SpainEurecat, Centre Tecnològic de Catalunya, Parc Científic i de la Innovació TecnoCampus, 08302 Mataró, SpainHohner Automation, P.I. Cal Batlle, 17400 Breda, SpainHohner Automation, P.I. Cal Batlle, 17400 Breda, SpainEurecat, Centre Tecnològic de Catalunya, Parc Científic i de la Innovació TecnoCampus, 08302 Mataró, SpainCIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainThis paper presents, for the first time, an absolute linear electromagnetic encoder consisting of a rubber belt with two chains of screen-printed metallic inclusions (rectangular patches). The position, velocity, and direction of the belt (the moving part) is determined by detecting the inclusions when they cross the stator (the static part). The stator is a microstrip line loaded with three complementary split ring resonators (CSRRs), resonant elements exhibiting a resonance frequency perturbed by the presence of inclusions on top of them (contactless). The line is fed by three harmonic signals tuned to the resonance frequencies of the CSRRs. Such signals are generated by a voltage-controlled oscillator (VCO) managed by a microcontroller. The sensed data are retrieved from the pulses contained in the envelope functions of the respective amplitude modulated (AM) signals (caused by the belt motion) generated at the output port of the line. One of the signals provides the absolute belt position, determined by one of the chains, the encoded one. The information relative to the velocity and motion direction is contained in the other AM signals generated by the motion of the other chain, periodic, and thereby, uncoded. The spatial resolution of the system, a figure of merit, is 4 mm. Special emphasis is devoted to the printing process of the belt inclusions.https://www.mdpi.com/1424-8220/22/5/2044electromagnetic encodersscreen-printingmotion controlmicrostrip technology |
| spellingShingle | Ferran Paredes Cristian Herrojo Ana Moya Miguel Berenguel Alonso David Gonzalez Pep Bruguera Claudia Delgado Simao Ferran Martín Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity Sensors electromagnetic encoders screen-printing motion control microstrip technology |
| title | Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity |
| title_full | Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity |
| title_fullStr | Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity |
| title_full_unstemmed | Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity |
| title_short | Electromagnetic Encoders Screen-Printed on Rubber Belts for Absolute Measurement of Position and Velocity |
| title_sort | electromagnetic encoders screen printed on rubber belts for absolute measurement of position and velocity |
| topic | electromagnetic encoders screen-printing motion control microstrip technology |
| url | https://www.mdpi.com/1424-8220/22/5/2044 |
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