The test bed is designed to test the working characteristics of PMG generator in C919 aircraft flight control system. The highest test speed of the generator is about 24500 r/min. The system is directly driven by imported high speed and high precision motor, which reduces the complexity of the system and greatly improves the maintainability.

The main functions of this system include:

· Output speed range of 0 ~ 24500 r/min continuously adjustable;

· Velocity rate of change test;

· Speed control characteristic test;

· Steady-state speed adjustment precision test;

· Speed overshoot characteristic test;

· Dynamic recovery characteristic test;

· Forward and reverse characteristic test;

· PMG test parts temperature, output voltage, main feeder voltage drop test;

· Torque loading function;

· The system has automatic cooling, active noise reduction, remote communication and other functions;