Optimal Design Of Automotive Disc Brake Based On Fuzzy Analysis

Disc brakes is essential for driving safety and directly rel ated to the safety of motorists as an important component of automotive brake systems. High dimension and nonlinear problems in the traditional automotive disc brake designs, emerging, parameters of the model becomes more complex, traditional design more difficult to solve these problems. According to project the actual paramet ers corresponding mathematical model, using MATLAB to solve the complex parameters model problem is the new approach with the combination of computer and engineering optimization.In the study of parametric model disc brake problem, there is researchful model with the shortest brake time as the objective func-tion, but the design did not consider the temperature rise of the brake, so that in practice there will be a rise in temperature due to the friction plates and influence braking effect. More seriously, it may even lead to the fracturing of brake disc cracks.In this paper, it establishs multi-objective optimal model with the goal of maximizing the braking torque of disc brake and minim-izing the temprature of brake disc in the process of optimizing the parameter of disc brake. And the maximum braking torque can eff-ectively guarantee the minimum braking time. The design paramet-ers are dispose by fuzzy analysis where the boundaries blur geome-tric constraints and friction sheet strength, energy dissipation rate than the friction plate, brake disc brake once the maximum allowab-le temperature and other properties of fuzzy constraints use level sets method, amplification coefficient, fuzzy comprehensive evaluatio-n fuzzy method treated as ordinary constraints. At last, it calls MATLAB optimization toolbox genetic algorithm to solve.Data results show that: After the single objective optimization design and the single-objective fuzzy optimization design, the torque-s respectively increase 16.6% and 74.77%. Fuzzy multi-objective optimization design results: lower temperature increases 37.3%, and the magnitude of the torque increases 72.66%. It achieves the purpo-se of the fuzzy optimization design. In this paper, the research co-ntent of parameter model of auto-motive disc brake problem has a certain theoretical significance.