Research on WOW test method of flight control system interface signal based on RT-LAB

The Weight On Wheel signal (WOW) is one of the important interface signals of the flight control system, which directly affects the control law automatic deceleration plate function, flight mode control law conversion function and automatic landing function. On the basis of analyzing the judgment logic of wheel-load signal WOW, this paper adopts the model-driven method to design the hardware and software scheme of the WOW test of the flight control interface based on RT-LAB. The test shows that the test scheme is practical and feasible, and can meet the test requirements of the integrated test interface of the flight control system.