| Magnetically controlled shape memory alloy (MSMA) is a new functional material which is found in recent years. MSMA has characteristics of large deformation rate and high response frequency in the martensite state. It is an important potential material for the next generation of intelligent actuators and sensors. So far, researches on MSMA are mainly concentrated on its properties under the changes of microstructure, temperature and components, while few researches are done on its application. The main contribution of this dissertation is the deep experimental study of an MSMA Virtual Test SystemThe development and the application of virtual instrument have provided the platform for this system's realization. Using Labview to realize this fault diagnosis system can solve some of the traditional instrument problems, such as the function lack , the precision not high enough and the using is not convenient and so on. Considering the request of the instrument's precision, Using PCI of NI company 6024DAQ card produced realize the data acquisition..The nucleus is the software in the design and realization of virtual instruments. We use the design method of module and use many papers to describe the whole building process of the data acquisition date and writing module, result demonstrate module. The expected design requirement achieve by way of having verified the reliability of system data analysis according to the analysis of standard signals.Through the application of virtual test system, the characteristics of MSMA under different temperature, magnetic field and pre-press were studied. A measurement method for MSMA relative permeability was advanced the dynamic variation rule of recovery deform by spring has been studied systemically.
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