Abstract：A method is proposed to reduce the amplitude by utilizing the time delay in the magnetorheological damper of the aircraft landing gear sway system.Firstly, considering the time delay generated in the process of using magnetorheological damper to control the roll angle, and the lateral displacement and roll angle in the landing gear system, the vibration differential equation of the landing gear sway system is established, and the characteristic equation is used to solve it.The relationship between the yaw angle and the external excitation frequency. Then, due to the large amplitude of the second formant, the amplitude difference between the two peaks is too large, an equal peak optimization method is designed, and an optimization criterion is designed, which effectively reduces the amplitude of the second formant, and The difference between the two peaks is controlled between 0.02. Finally, the designed optimization criterion is verified and analyzed in the time and frequency domains, which verifies the accuracy of the calculation process and the benefit of the time-delay system to reduce the difference between the two peaks.
2023, Vol. 44 
