Analysis and Application of FLL based on the Processing of the Input and Output Periods. (1st January 2016)

• Record Type: Journal Article
• Authors: Perišić, Djurdje; Žorić, Aleksandar; Perišić, Marko; Mitić, Dragan
• Is Part Of: Automatika. Volume 57:Number 1(2016)
• Page Start: 230
• Page End: 238
• Publication Date: 2016-01-01
• Subjects: Digital circuit -- Frequency Locked Loop -- Phase Locked Loop -- Recursive feedback algorithm; Digitalni sklop -- Frekventna petlja -- Fazna petlja -- Rekurzivni algoritam s povratnom vezom; Automatic control -- Periodicals; 629.805
• DOI: 10.7305/automatika.2016.07.769
• Languages: English
• ISSNs: 0005-1144

Abstract

Abstract : This paper describes development, analysis, implementation and application of one recursive Frequency Locked Loop (FLL) based on the measurement and processing of the periods of the input and output signals. FLL is the linear discrete system of the first order, which regulates its output once per the input period. The FLL parameters are defined by the frequencies of three clocks. These frequencies have to be mutually in defined relationship for the stable FLL. FLL provides a wide range of properties useful for different applications. The stability and the other conditions, under which the described system can have the properties of a FLL, are investigated using the Z transform analyses. Using mathematical analyses and the simulations of this FLL it is shown that, for the corresponding system parameters, FLL possesses the power noise rejection ability. This FLL can also be used for the different predicting and tracking applications, for the measurements of the frequency of the input signal in the noise environments and for the other applications. The oscilloscope picture of the characterized input and output signals, recorded on the realized FLL, is presented.