Abstract: For testing the function

the performance and the reliability of driving cell of adjusting drift angle in real time

A method using FPGA was given

which can test the driving cell of adjusting drift angle. Using this method and the technology of computer

the testing system for the driving cell of adjusting drift angle was developed. The system sample the driving signals with high speed AD into the FPGA. And after analyzing the signals

the information of control impulse was formed. At the same time

the system simulates the coder to feedback the information to the driving cell

And immediately send the information of control impulse and the information of the coder simulated into the computer system to test. The system test the driving cell of adjusting drift angle

which work frequency equal to 1.2kHz

the lest interval of coder feedback equal to 10ms

the warp of feedback less than ±1 code. The experimental results show that the testing system can exactly monitor the state of the driving cell and detect the various of error of driving cell. It totally satisfies the requirements for the closed-loop testing of the driving cell of drift angle in real time