Research On Efficiency And Testing System Of Front Axle Braking Mechanism

Electronic of braking system has become a distinct trend at present. However, electronic facility should be equipped with reliable braking executive mechanism. It is indicated by research that the result of usage of electronic equipment would be even worse than without using it unless appropriate executive mechanism has been employed. On the other hand, large-tonnage & high-speed & high-powered has increasingly become the trend of vehicle transportation as a result of enhancement of transportation construction and logistics. People have to strengthen the research and test on principle and mechanism of automobile's braking system with the increasingly distinctness of vehicle's safety problem. Continuous improvement of structure and performance are required to adjust to the various working condition of vehicles.Having aimed at braking performance of front axle and requirement of integration of test & produce in Northern Benz Axle Corporation, this thesis has carried some research with the discussion of vehicle's braking principle and platform's testing characteristic. The main content of this paper are as follows:(1) Theoretical analysis of braking mechanism. Having based on the structure and principle of braking structure, this thesis has analyzed some relevant theories on arrester and gas chamber of arrester.(2) Modeling and analysis of braking mechanism. Models of arrester and gas chamber have been established with the application of theories of braking mechanism. Working performance and important influencing factors of braking performance have been analyzed with the utility of Matlab.(3) Development of braking performance testing system. Based on the characteristics of braking mechanism and inertial platform testing, this paper has brought forward the testing scheme in product line field. Realization methods of mechanical simulation, design of hardware & software and testing flow are put forward on the basis of the requirement of system's overall requirement.(4) Analysis of testing result combined with model. Having compared ideal model with testing result, this paper has analyzed the distinction between ideal result and actual result. This thesis also has provided with the methods of remedy of model's defect and explanations of various phenomenon in testing result. Some suggestions are raised on the basis of practical & technical testing result.Also, some important results are achieved in the process of research work. For instance, the performance characteristics and some important influencing factors of arrester and gas chamber of arrester, coupling performance of braking mechanism; discovery of new methods(change gas pressure) to change adhesive coefficient, new testing methods are provided with for braking mechanism; Inertial roller method has been rebuilt to be used in online testing; Experiential method has been achieved to remedy the responsive delay defect on the basis of the comparison between result and model. Having analyzed the technical parameters and testing result, this paper has brought forward the applied calculating methods and improving measures of mechanism. Therefore, testing and research have been tightly combined.