Optimization Approach in Window Function Design for Real-Time Filter Applications

Abstract

Eliminating the Gibbs oscillations that occur during the Finite Impulse Response (FIR) digital filter design with the Fourier Series method will ensure correct filtering. For this reason, the development of the window improves the performance of the filter and, therefore, the system. In this study, the cosh window function is designed using Particle Swarm Optimization, which is a preferred optimization method in many areas. Thus, alternatives to the standard results obtained from the existing traditional calculations will be produced, and different windows that perform the same function will be obtained. In addition, exponential and cosh window functions were designed in LabVIEW environment, which is a graphical programming language-based program, and the designed windows were analyzed at different parameter values. LabVIEW provides a fast and easy programming environment, and it provides the opportunity to realize real-time applications with its external hardware. Utilizing this feature, the amplitude spectrum of cosh window designed in LabVIEW is displayed in real time for different window parameter values. As a result, FIR digital filters were designed using cosh window based on optimization and the cosh window designed in LabVIEW, and the distorted EEG signal was filtered using these filters and displayed in real time.

Barkod Tanıma İşlemlerinde SURF Metodunun Uygulanarak LabVIEW Tabanlı Raf Otomasyon Sisteminin Gerçeklenmesi

“…Visual Studio ortamından gönderilen barkod bilgisi LabVIEW ortamına analog olarak aktarılmış ve bu aktarılan bilgi LabVIEW yazılımı aracılığı ile Şekil 6'da gösterildiği gibi işlem birimi seçimi için kullanılmıştır. Seçim işlemi tamamlandıktan sonra LabVIEW daq kartı(arduino mega) ile NI VISA protokolleri kullanılarak lifabase yazılımı aracılığı ile haberleşmesi sağlanmıştır [16]. Haberleşme işlemleri sağlandıktan sonra gerekli timerlar kullanılarak kartezyen robot sistemindeki motor sürücülerinin gerekli pwm sinyalleri oluşturulmuştur.…”