Work

A Linear Method for Extracting the Amplitude of a Sinusoidal Signal

Year: 2025

Type: article

Abstract: ABSTRACT The amplitude extraction of sinusoidal signals is a very important task in many engineering applications; existing extraction methods demonstrate poor performance due to their limited extraction accuracy. This paper presents a method, which does not require a power of two sampling points, for linearly extracting the amplitude of sinusoidal signals and develops a corresponding hardware system. The system can autonomously generate fixed‐frequency sinusoidal signals induced through an electromagnetic induction coil, which are subsequently amplified and are sampled by the acquisition card. Additionally, the system features a standard signal input interface, enabling flexible input of sinusoidal signals with different frequencies. Both simulation and real signal sampling data experiments show that it does not require complex iterative calculations and has the advantages of fast speed and high accuracy, and can be used in the scenarios requiring high real‐time performance and extraction precision.

Source: Electronics Letters

DOI: 10.1049/ell2.70374

Authors: Wanan Yang, Chaoyang Zhang, Xuke Xia, Changyuan Wang, Chunhua Ren

Institutions: Yibin University, Chinese Academy of Sciences, Quanzhou Institute of Equipment Manufacturing Haixi Institute

Language: English

Topic: Advanced Electrical Measurement Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,590

Funder: Yibin University