Abstract:The loading force for center of mass simulated device have the quality of change fast,and high precision requirements.Signal acquisition and data processing were realized based on LabVIEW for the load force of the center of mass simulated device.In order to record the static variables,such as:set force value,rate of change for loading force,loading force variation range,operation time and data,testers and dynamic variables,such as:system oil pressure,lateral displacement,loading force moving speed,the value of loading force,both switch and analog signal were acquisited by digital data acquisition card NI PCI-6232 and analog acquisition card NI PCI-6518,saftware and hardware could communicate each other based on DAQmx base module.What was more,the function of automatic report generation was designed by using LabVIEW.It is proved that the function of signal acquisition and data processing is stable and reliable.