Estimating the Frequency of the Sinusoidal Signal using the Parameterization based on the Delay Operators Topics: Engineering Applications; Engineering Applications on Intelligent Control Systems and Optimization; Modeling, Analysis and Control of Hybrid Dynamical Systems; Modeling, Simulation and Architecture; Systems Modeling and Simulation; Systems Modeling and Simulation In Proceedings of the 18th International Conference on Informatics in Control, Automation and Robotics ICINCO - Volume 1, 656-660, 2021