Synchronicity Analysis of Electric Thrust Reverser Actuation System

In order to solve the displacement synchronization problem in the electric thrust reverser actuation system of the air-craft cascade thrust reverser, the synchronization performance of the transmission mechanism was studied. First, based on the operating principle of the synchronous mechanism, the mathematical model and Simscape model of the synchronous mechanism are established. Then, the influence of actuator transmission ratio, flexible shaft flexibility and asynchronous load on the system synchronism are analyzed by simulation. The simulation results show that the one-side and two-sides synchronization precision of the electric thrust reverser actuation system can reach 1.19% and 1.72%, respectively. The synchronization precision can be better than 1% by optimizing the parameters of the actuator transmission ratio and the flexible shaft flexibility. The influence of actuator transmission ratio and flexible shaft flexibility on synchronization performance is greater, the smaller the actuator transmission ratio and flexible shaft flexibility is, the higher the synchronization precision is, however, the influence of the asynchronous loads between actuators on the synchronism is less. The research results provide a reference for the parameter design and fault diagnosis of the synchronous mechanism of the electric thrust reverser actuation system.