Active air-inlet grille system and control method of motor controller based on active air-inlet grille system

The invention discloses an active air-inlet grille system and a control method of a motor controller based on the active air-inlet grille system, the mode and state jump of a grille are defined based on a software architecture of the grille, the grille is divided into five modes, namely an initialization mode, a calibration mode, a normal mode, a failure mode and a sleep mode, and after being powered on, the motor controller is switched on. The system continuously jumps in several states according to actual conditions. The invention further provides a fault protection mechanism, when it is detected that the action of the grating is abnormal, the fault can be rapidly and accurately recognized, the recognized fault is subjected to grading processing, the fault is fed back to a vehicle control unit VCU in time, and further processing is conducted according to an instruction of the VCU, fault misinformation is eliminated, and the fault is eliminated; and after the fault is eliminated, the flag bit is cleared in t