The prediction of braking noise in regenerative braking system using closed-loop coupling disk brake model

Abstract

Aiming at improving regenerative braking ability in electric vehicles without compromising any safety, two different regenerative braking strategies are proposed in this study. The impact of continuously varying braking force distributions between front/rear wheel and electric/friction corresponding in two different strategies on braking noise are investigated. Based on the closed-loop coupling disk brake model, the relationship between the contact coupling stiffness and the braking force is established by considering the stationary modal test, the nonlinear optimization, and the relationship between brake-line pressure and braking force. The continuously varying braking force is initially transformed to continuously varying contact coupling stiffness, then, the brake noise tendency at each frequency band is calculated in closed-loop coupled model. The predicted result shows good consistency with the result recorded in bench test, verifying the reliability and effectivity of the presented method. The comparison of the two different electric braking strategies shows that the second braking strategy is superior to the first braking strategy in terms of suppressing the brake noise tendency.

Role of binder in controlling the noise and vibration performance of brake-pads

“…The first approach shows characterizations of friction-induced vibration through global dynamical analysis of the brake system. [5][6][7][8][9][10][11][12] The second approach shows the problem from a tribological point of view, considering that friction noise is the result of unstable vibration of the frictional interface. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Thus, physical and chemical interface properties play a significant role in the occurrence of friction noise.…”

Simulation Analysis on the Distribution Valve Module of Locomotive Brake System Under Event Process Module

“…Gao et al (2019) [5] studied the influence of braking force distribution between front and rear wheels and the corresponding electrical friction on braking noise under two different strategies in order to improve the regenerative braking capacity of electric vehicles, and the relation between contact coupling stiffness and braking force is established; the results show that both have good performance in restraining the trend of brake noise.…”