Method for rapidly calculating modality of automobile braking system

The invention relates to the technical field of braking systems, in particular to a method for rapidly calculating the modality of an automobile braking system. The method is characterized by comprising the following specific steps: acquiring a parameter model of a braking system assembly model substructure; aiming at the part, needing to be modified, of the model, generating a simulation base model for parameterization aiming at the modified part; parameterizing the simulation base model to obtain models in different shapes, and obtaining substructure parameter models of the models in different shapes; assembling the parameter model of the sub-structure of the assembly body of the braking system in the step 1 and the parameter models of the sub-structures in various shapes obtained in the step 3 to obtain a mass matrix and a stiffness matrix of the whole model in different modification states; and carrying out eigenvalue solving on the mass matrix and the stiffness matrix of the overall model to obtain key m