Based on the improved inverse repeated pseudo-random binary sequence and the advanced VXI bus equipment, the dynamic characteristics of the hydraulic servo valve were successfully tested, which show its validity and accuracy. 运用一种改进型的逆重复伪随机算法,结合先进的VXI总线仪器,成功地实现了液压伺服阀动态性能的测试,实践证明了这种方法的有效性。