Auto Abs Anti-lock Braking Characteristics And Not The Disintegration Of The Detection Technology

With the speed acceleration of automobiles and the density of the traffic, there come higher and stricter requirements for the safety of driving. Anti-lock Braking System(ABS) of automobiles, through regulating and adjusting the braking of wheels, can make the greatest use of the road surface adhesive coefficient to shorten the braking distance, prevent side slippery, improve the steadiness of steering in braking performance, thus greatly enhance automobiles'braking performance and improve the safety of automobiles. As a result, ABS comes into quick and wide use. The testing and evaluation of the performance of ABS is often carried out through road testing. However, road testing, on the one hand, involves expensive experimenting fees, long testing cycles, low precision, and great influence by the conditions of roads and the environment, but on the other hand, it can only applies to spot checks of certain automobiles, but not to the regular testing of a host of automobiles. How to test the braking performance of automobiles equipped with ABS without disintegrating platforms remains a technological problem to be solved immediately for our country's safety and comprehensive testing industry as well as automobile manufacturing and automobiles service industry.As far as this problem is concerned, the paper, on the basis of thorough analysis of the properties of ABS and the research on testing theories of ABS without disintegrating platforms, the paper puts forward a new testing method of the performance of ABS without disintegrating platforms in different road conditions. This method makes use of inertia flywheel turning dynamics on the platform to simulate the dynamics of the automobile's revolver and the horizontal dynamics of automobile's rectilinear motion. The simulation of the road surface adhesive coefficient is conducted by the torsion control over the revolver. In other words, the surface of the roller is used to substitute the surface of roads, on which wheels spin. The computer control system automatically regulates and controls the simulating system of the road surface adhesive coefficient, which makes it possible to simulate the three typical working conditions (single adhesive coefficient of the road surface, reciprocal adhesive coefficient of the road surface, docking adhesive coefficient of the road surface), and the fricative coefficient of the roller and combine them together at will. As a result, the dynamic simulation of different braking process of automobiles is available, and the trial and testing of the performance of ABS with the safety guarantee of automobile's fixed equipment is available, too.The paper, through the analysis of the locking factors of automobile's braking process and kinematics dynamics, summarizes the anti-locking properties of ABS and the ideal anti-locking process of ABS; in the meanwhile, it constructs the mathematic model of reactive distance of drivers with ABS, the mathematic model of transportation braking distance as well as the mathematic model of parking distance. With the analysis of the types, loading and the controlling theories of ABS, the paper explores the methods of the braking pressure of ABS'different regulating parameters and its appliances. With the regulating schemes of ABS and the simulated research, the paper comes up with the conception that that it is more rational to adopt fuzzy control as the regulating algorithm of ABS by combining multi-parameters'detective control and simulated test.The paper, conducting a thorough research of the overall technological scheme and its technological fulfillment of ABS'testing platform and monitoring system, uses the methods of coordinative designing and model construction in the designing process, builds the designing process model of ABS without disintegrating platforms based on the expanded target—Petri net, and simulates and analyzes the properties of the models. Meanwhile it also put forwards the innovating and optimizing methods in the designing process. In order to solve the communication problems of monitoring system of testing platform monitoring system and automobile's testing line, the paper, after the thorough analysis of the three traditional automobile testing networking methods of skipping communication, data sharing, net data bank, proposes a new monitoring system of ABS testing platform and automobile testing networking communication based on the technology of Winsocket, which solves the networking problems of automobile dispatch in networking control system and networking communicative methods of automobile testing under the pattern of C/S. In terms of the procession of testing data, this paper analyze the shortcomings of quasi-harmony of the traditional method of testing data, recommends the adoption of the new quasi-harmony and optimizing methods of three B functions, and undertake further theoretic analysis and software realization. The testing results and standardization shows that this method solves the difficult tasks of the analyzing and procession of braking testing data, thus greatly improve the precision, data repetitiveness and even the steadiness and reliability of the whole testing system.The research of this paper is a frontier research topic in automobile performance test. Through the development of testing platform without disintegration as well as the testing and analyzing system, the technological problems of testing braking system of automobiles with ABS by all existing automobile testing platform can be effectively solved, which baffle our country's automobile's testing industry for years. This research fills the gaps in this field; meanwhile, it is of great significance to our country's development in automobile testing technology and equipment.