Filtrado analógico en instrumentación para acondicionamiento de señales de pulsos en procesos industriales utilizando la técnica posicast

Filtration is essential in industrial environments for eliminating noise and interference that are combined with signals from sensors. To perform such a function there are analog filters, which can be active or passive. In the case of industrial instrumentation, the active filters are the most used, because the inductors can be dispensed with when high-order implementations are required. The filter approach that shows the best performance against noise is Tchebyshev. But it presents the problem of the introduction of distortions in the signal due to the over-shot. That is, there is a compromise between noise suppression and distortion, and the limits the frequency of pulse signals that can be filtered due to establishment time. Less distortion implies a lower performance against noise. It is proposed to use the techniques of elimination of over-impulses provided by the control engineering, in combination with the filters of better performance against the noise, it’s possible to get a new approach to the design of analog filters for conditioning of signals of pulses, which does not alter the shape of the pulse signal. Of the techniques of elimination of over-impulses, Posicast emerges, taking into account its good performance in applications of industrial electronics, electrical machines and microelectronics. This project focuses on low pass filters, which are used in the conditioning of pulse signals to eliminate high frequency noise, using two specific approaches: Bessel and Tchebyshev, because these represent the two extremes in relation to the Over-impulse in the temporal response of the filters. When combined with the proposed approaches, Posicast proves to be a suitable technique to eliminate distortion caused by filters with better performance in the frequency response.

• Autores: Simancas García, Leonardo
• Tipo de recurso: Trabajo de grado de pregrado
• Fecha de publicación: 2017
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: spa
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/607
• Acceso en línea: https://hdl.handle.net/11323/607; https://repositorio.cuc.edu.co/
• Palabra clave: Sistemas ligeramente amortiguados; Posicast; Conformadores de entrada; Filtros analógicos; Lightly damped systems; Posicast; Input shapers; Analog filers
• Rights: openAccess
• License: Atribución – No comercial – Compartir igual