Abstract: In order to quantify impact of changes in flight number at different work stages in control area on fatigue of controllers, a test was designed and conducted. Firstly, 20 in-service controllers were selected to conduct experiments before and after large and small night shifts. Their EEG signals were collected during tasks of radar simulator at different flow levels before fatigue indicators value were extracted and analyzed by using SPSS20.0. Then, controllers were divided into two groups for comparison, and fatigue index value before and after shift was linearly fitted. The results show that fatigue index value and volatility of these controllers with job age≥10 years are significantly lower than those with that <10 years. That value of pre-shift controllers shows a downward trend in middle and later periods as number of control flights increases while that of post-shift controllers increases logarithmically along with increase of control frequency, and changes over time with a cubic curve.

Key words: controller, electroencephalogram (EEG) signal, fatigue index, job age, number of control flights