Automatic test method for noise immunity of control system based on virtual instrument

A noise immunity automatic test method for analog acquisition module of control system based on virtual instrument is proposed. The traditional method is too complicated and inefficient. This paper designs a set of efficient common and series mode noise immunity automatic test system based on virtual instrument. Through the programmable function of virtual instrument we develop test processes such as signal source input, disturbance exerting, data acquisition, data recording and dynamic analysis, and test report can be generated automatically. The experimental results show that the common and series mode noise immunity automatic test system based on virtual instrument can work continuously for a long time, and can do multi-channel parallel test, which significantly improves the test efficiency.