Robust Optimization Design of Drum Brake

With the impact of uncertain factors in optimization design of drum brake,combining reliability optimization theory,analysis of reliable sensitivity and the robust design method,the paper establishes mathematic model of robust design for drum brake,adopting braking efficiency as objective function.The reliability and sensitivity of braking torque and friction linings stress is added to the reliability optimization design model,which is transformed into the multi-objective optimization.Example calculations show that the brake has high efficiency,good reliability and low sensitivity,with satisfactory results.