In this paper,the authors first analyze and compare the existing technologies,and then put forward a new kind of load balancing technology based on virtual router clusters.

Considering the analysis of the system and function,a high-speed realtime signal processing system based on the virtual instrument bus is expounded, which ensures the system of electromagnetic compatibility and high-speed data transmission characteristics.

Based on the inverse repeat pseudo-random binary sequence and the advanced VXI bus virtual instrument,the dynamic characteristics of the hydraulic servo valve were tested,which shows its vality and accuracy.