Redirigiendo al acceso original de articulo en 19 segundos...
ARTÍCULO
TITULO

SIMULATION OF AN ELECTROMYOGRAPHIC SIGNAL CONVERTER FOR ADAPTIVE ELECTRICAL STIMULATION TASKS

Olha Yeroshenko    
Igor Prasol    
Oleh Datsok    

Resumen

The subject matter of the article is an electromyographic signal transducer, which are an integral part of devices for adaptive electrical stimulation of muscle structures based on reverse electromyographic communication. The goal of the work is to study the features, obtaining the corresponding theoretical relationships and computer modeling of a differential biopotential converter, providing amplification of the useful component and suppression of harmful interference, the spectra of which intersect. The following tasks were solved in the article: determining the effect of electrode width and electrode spacing on crosstalk; formation of the electrode-skin model and the input circuit of the transducer, obtaining theoretical relations for calculating the rejection coefficient, construction of the transducer circuit and its computer simulation. The following methods were used ? methods of mathematical modeling of processes and technical devices; methods of analysis, structural and parametric synthesis of nonlinear electronic circuits; methods of machine design. The following results were obtained ? a biopotential amplifier circuit with tracking feedback on power supply is proposed; modeling of dynamic processes by means of the Multisim program was carried out; on the basis of the constructed model of the electrode-skin input circuit and the obtained analytical relationships, the rejection coefficient of the input circuit of the equivalent circuit is calculated; the requirements for the signal registration module are formulated. Conclusions: The considered version of the electromyographic signal converter circuit based on tracking communication on power supply, effectively rejects 50 Hz common mode noise. On the basis of the constructed equivalent model of the input circuit of the amplifier, the theoretical relation for calculating the rejection coefficient of such amplifiers. The circuit is simulated in the Multisim program, the results confirmed the correctness of its functioning. The requirements for the interelectrode distance and the thickness of the electrodes themselves are also formulated. The results obtained can be used to design complexes for adaptive electrical stimulation.

 Artículos similares

       
 
Oleksandr Plakhtii,Volodymyr Nerubatskyi,Dmytro Sushko,Igor Ryshchenko,Vladyslav Tsybulnyk,Denys Hordiienko     Pág. 6 - 14
In order to minimize the reactive power and higher harmonics of currents, as well as to improve the electromagnetic compatibility of electrical traction networks and systems of railroad automation, modern electric rolling stock of alternating current emp... ver más

 
Mohammad Reza Modabbernia, Alireza Akoushideh, Seyed Yaser Fakhrmoosavi     Pág. 14 - 33
In this paper, a controller has been presented by the root locus method based on the state space average model of the boost switching regulator with all of the converterâ??s parameters and uncertainties. In this model, the load current is unknown and the... ver más

 
Ernes Cahyo Nugroho,Agung Nugroho,Isti Hendriyanto     Pág. HAL. 43 - 52
Papercut is a craft cut on paper media with the initial stage of making the design is done still manually. It is in less effective and efficient value. By utilizing the CNC machine workmanship will be more quickly resolved, but the price in the market th... ver más

 
Pavel Mikhalichenko,Victor Nadtochii,Anatoly Nadtochiy     Pág. 6 - 14
It has been proposed to use power losses as an additional energy parameter to complement basic energy indicators in determining the short circuit mode in a traction power grid. Three techniques have been reported to determine the transitional characteris... ver más

 
Pavel Khristo     Pág. 15 - 35
The influence of unadjustable-speed AC drive and adjustable-speed DC drive of the drydock main pumps on the network of the Okean shipyard (Ukraine) is investigated in MatLab SimPowerSystems.To accurately simulate deep-bar induction motors, the own method... ver más