The Robustness Optimization of the Brake Pedal Structure Based on 3DCS
In the process of pre-production trials,the relative height between the brake pedal and the ac-celerator pedal is out of tolerance,which affects the user's driving sensations.A 3DCS tolerance model of the brake pedal was established to simulate the tolerance accumulation during the assembly process.And also,the impact factor and contribution of the key weight were traced through three different algorithms:Monte Carlo,HLM and Geo-Factor.The results showed that the Geo-Factor coefficient of the brake pedal was as high as 1.74,and the structural robustness was poor.Combined with the cost,quality and space ar-rangement,the structure of the brake pedal base was optimized,and the simulation results show that the Geo-Factor coefficient is 1.12,and the structural robustness is improved by 35.6%.30 sets of rapid sam-ples were made for verification,and the results of Minitab showed that the relative height between the brake pedal and the accelerator pedal met the evaluation criteria.
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