Dynamic Test System Design Based on Grating Torque and Speed Sensor

General test system has caused test error in a lot of transmission chain.This article presents an integrated coaxial transmission and coaxial grating torque and speed sensor test system to reduce the test error.Not only the grating to achieve high-speed and high-precision rotation speed test is used,but the signal differential of the last two coaxial grating is used to achieve a high-precision dynamic torque test.The use of high-speed data acquisition card PCI-1784 conducts a four-axis simultaneous signal acquisition to build a computer platform of virtual instrument test with LAB view software.To pick up test signals of the torque,this paper also proposes a discriminating phase method with soft-ware correlation analysis.The system has the characteristics of precision,being ascendant full-optical,insulation,flame-proof,anti-EMI and enduring high temperature.It can be applied to analyze the dynamic characteristics and the response of testing in various working situations and surroundings.