Design Of Nonlinear Signal Observation System Based On LabVIEW

Knowing the complexities of nonlinear systems can be controlled and utilized.The nonlinear signal reflects the characteristics of the nonlinear system,and the real-time observation of the motion state of the nonlinear signal provides great help for people to study nonlinear systems.When observing different nonlinear signals,different observation methods can be designed.When using virtual instruments to observe nonlinear signals,the computer has powerful data processing and interface display functions,which is very flexible and can be used according to different functions.The requirements are designed to implement these functions.In order to observe the nonlinear signal more comprehensively,a nonlinear signal observation system is designed using LabVIEW after analyzing various research methods of nonlinear signals.The system not only has timing diagram and phase diagram observation functions,but also has three-dimensional phase diagram,spectrum diagram and scatter plot observation function.This design selects the USB interface data acquisition card to collect and transmit nonlinear signals,and designs the driver to drive the acquisition card to collect signals and transmit them to the host computer;the application is designed to receive data,process data and display data;the front panel interface is designed to simplify complex operations.process.Through the design of these functions,it is convenient and quick to observe nonlinear signals.In order to verify the effectiveness of the observation function of this design,the test results are shown by Chua’s circuit and signal generator.The test results show that the system works well,and because of the real-time observation properties of the design and the multi-angle,multi-angle observation form,the nonlinearity The study of signals has great practical value.