| Amorphous and nanocrystalline soft magnetic materials are widely used in filed of electricity and electronics. It has greatly helped to implement high frequency,miniaturization and low loss of electronic products, and to replace the current widely used cores Materials. Amorphous and nanocrystalline soft magnetic material was used in magnetic devices that the condition of dynamic magnetization, therefore the dynamic magnetic measurement of amorphous and nanocrystalline soft magnetic material is crucial.This paper proposed the design plan of the measurement system based on the hardware platform that comprised excitation signal source based on the DDS technology,data acquisition board and personal computer, and the software of the instrument is developed on LabVIEW platform. System is divided into excitation signal source, data acquisition, data processing.This paper proposed design plan of the excitation signal.AD9852 chip is the core, C8051F020 is microcontroller chips and LabVIEW is the development platform of the signal interface. Through RS232 implement the communication between PC and SCM. RVO3050 digital oscilloscope implement data acquisition, voltage data collected from two directions, and complete data analog-digital conversion and storage. Part of the data processing system, including data access, data analysis, real-time display and data storage. The data-processing software design was completed through used LabVIEW and C language. System has applied to experiment, and a large number of results were determined. Based on the experimental results analysis, adopting the least square method analysed the function relationships among core power loss P of intensity of magnetic induction Bm, remanence Br and coercivity Hc.The experimental results show that the system is reliable with respect to measurement of nanocrystalline soft magnetic amorphous magnetic materials dynamic parameters.
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