Abstract:Aiming at electric circuit constitution and function characteristics for fire-control system of current battlefield armored equipment, carrying a research on fault diagnosis method and testing requirements in the process of fire-control system maintenance,a semi physical co-simulation method for fire control system is proposed in this paper.The design ideas, realization means and application function of the method are introduced. This method gives full play to the advantages of LabVIEW and Multisim, with the hardware-in-the-loop simulation method, using simulation model replacing part or all of the fire-control system components, realizes circuit function simulation and fault recurrence for different levels of fire-control system,fast completes fault diagnosis analysis.This method can solve the maintenance diagnostic equipment for fire-control system of current armored equipment in poor universality, the low degree of standardization, poor openness,difficult to really simulate function, fault injection and fault detection on system or component level, etc.So it can provide an effective platform for the development of fire-control system fault diagnosis and test equipment of our battlefield armored equipment, and provide platform for the grass roots units to carry out the repair and maintenance training.