Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto
Sinusoidal current sources are fundamental components of electronic equipment used in bioimpedance analysis and in electrical impedance tomography. Currently, these sources are mostly implemented as analog electronic systems. The aim of this paper is to present a new approach to current sources desi...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
| Published: |
Universidad Pedagógica y Tecnológica de Colombia
2019
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8849 |
| _version_ | 1801706344842002432 |
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| author | Trujillo, Vladimir Rengifo, Carlos F. Bravo Montenegro, Diego Alberto |
| author_facet | Trujillo, Vladimir Rengifo, Carlos F. Bravo Montenegro, Diego Alberto |
| author_sort | Trujillo, Vladimir |
| collection | OJS |
| description | Sinusoidal current sources are fundamental components of electronic equipment used in bioimpedance analysis and in electrical impedance tomography. Currently, these sources are mostly implemented as analog electronic systems. The aim of this paper is to present a new approach to current sources design based on discrete-time closed-loop control systems. The experimental results are obtained by implementing the current source in a system of analog and digital programmable blocks, and using as a controller a nonlinear difference equation proposed by the authors. This controller guarantees the convergence of the amplitude of the current flowing through the load, towards a user-desired level. This new control law does not require any parametric adjustment nor knowledge of the load . The developed device is able to produce a sinusoidal current signal of a frequency ranging from 100 Hz to 120 kHz and currents from 500 μA to 2 mA. The amplitude error of the current signal remained below 1% for tests performed with resistive-capacitive loads (Cole’s type loads). The output impedance is frequency dependent and ranges from 410 kW to 966 kW. The total harmonic distortion is less than 5%. All the proposed system is embedded in the mixed signal device PSOC 5LP, a shunt resistance being the only external component. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-8849 |
| institution | Revista Ciencia en Desarrollo |
| language | spa |
| publishDate | 2019 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-88492020-11-11T02:06:41Z Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto A Sinusoidal Current Source for Bioimpedance Applications Based on a Nonlinear Discrete Time Closed Loop Control Algorithm Trujillo, Vladimir Rengifo, Carlos F. Bravo Montenegro, Diego Alberto Sinusoidal current sources, bioimpedance, current control loops, nonlinear discrete time control, mixed signal devices. Fuentes de corriente sinusoidales, bioimpedancia, bucles de control de corriente, no lineales. Control de tiempo discreto, dispositivos de señal mixta Sinusoidal current sources are fundamental components of electronic equipment used in bioimpedance analysis and in electrical impedance tomography. Currently, these sources are mostly implemented as analog electronic systems. The aim of this paper is to present a new approach to current sources design based on discrete-time closed-loop control systems. The experimental results are obtained by implementing the current source in a system of analog and digital programmable blocks, and using as a controller a nonlinear difference equation proposed by the authors. This controller guarantees the convergence of the amplitude of the current flowing through the load, towards a user-desired level. This new control law does not require any parametric adjustment nor knowledge of the load . The developed device is able to produce a sinusoidal current signal of a frequency ranging from 100 Hz to 120 kHz and currents from 500 μA to 2 mA. The amplitude error of the current signal remained below 1% for tests performed with resistive-capacitive loads (Cole’s type loads). The output impedance is frequency dependent and ranges from 410 kW to 966 kW. The total harmonic distortion is less than 5%. All the proposed system is embedded in the mixed signal device PSOC 5LP, a shunt resistance being the only external component. Sinusoidal current sources are fundamental components of electronic equipment used in bioimpedanceanalysis and in electrical impedance tomography. Currently, these sources are mostly implemented asanalog electronic systems. The aim of this paper is to present a new approach to current sources designbased on discrete-time closed-loop control systems. The experimental results are obtained by implementingthe current source in a system of analog and digital programmable blocks, and using as a controllera nonlinear difference equation proposed by the authors. This controller guarantees the convergence ofthe amplitude of the current flowing through the load, towards a user-desired level. This new control lawdoes not require any parametric adjustment nor knowledge of the load . The developed device is able toproduce a sinusoidal current signal of a frequency ranging from 100 Hz to 120 kHz and currents from500 μA to 2 mA. The amplitude error of the current signal remained below 1% for tests performed withresistive-capacitive loads (Cole’s type loads). The output impedance is frequency dependent and rangesfrom 410 kW to 966 kW. The total harmonic distortion is less than 5%. All the proposed system is embeddedin the mixed signal device PSOC 5LP, a shunt resistance being the only external component. Universidad Pedagógica y Tecnológica de Colombia 2019-07-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8849 10.19053/01217488.v10.n2.2019.8849 Ciencia En Desarrollo; Vol. 10 No. 2 (2019): Vol 10, Núm. 2 (2019): Julio - Diciembre; 137-149 Ciencia en Desarrollo; Vol. 10 Núm. 2 (2019): Vol 10, Núm. 2 (2019): Julio - Diciembre; 137-149 2462-7658 0121-7488 spa https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8849/8666 |
| spellingShingle | Sinusoidal current sources, bioimpedance, current control loops, nonlinear discrete time control, mixed signal devices. Fuentes de corriente sinusoidales, bioimpedancia, bucles de control de corriente, no lineales. Control de tiempo discreto, dispositivos de señal mixta Trujillo, Vladimir Rengifo, Carlos F. Bravo Montenegro, Diego Alberto Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title | Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title_alt | A Sinusoidal Current Source for Bioimpedance Applications Based on a Nonlinear Discrete Time Closed Loop Control Algorithm |
| title_full | Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title_fullStr | Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title_full_unstemmed | Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title_short | Una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| title_sort | una fuente de corriente sinusoidal para aplicaciones de bioimpedancia basado en un algoritmo de control no lineal en tiempo discreto |
| topic | Sinusoidal current sources, bioimpedance, current control loops, nonlinear discrete time control, mixed signal devices. Fuentes de corriente sinusoidales, bioimpedancia, bucles de control de corriente, no lineales. Control de tiempo discreto, dispositivos de señal mixta |
| topic_facet | Sinusoidal current sources, bioimpedance, current control loops, nonlinear discrete time control, mixed signal devices. Fuentes de corriente sinusoidales, bioimpedancia, bucles de control de corriente, no lineales. Control de tiempo discreto, dispositivos de señal mixta |
| url | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8849 |
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