Abstract
On-board diagnostics of technical condition of the brake system elements provide control during the inter-control period of operation. The use of ABS requires further development of on-board diagnostic tools based on the development of new diagnostic methods using multilevel structural and effect schemes, primarily in terms of efficiency parameters. Increase of the information content by increasing the number of measured kinematic parameters and improving the algorithms for generating control signals for the brake system actuators showed effectiveness of diagnostics. To implement diagnostics of technical state of the brake system elements on board of a vehicle, a structural diagram of a diagnostic device, which uses telecommunication means of connection with an expert system and a voltage strain gauge in the coupling device of a truck has been proposed. It is advisable to carry out in-depth element-by-element diagnostics under bench conditions, with the maximum possible exclusion of random factors affecting the process. To summarize all information about the state of the vehicle's braking system, it is necessary to use an expert system.
Highlights
Active vehicle safety is determined by its technical equipment, and by the serviceability of technical condition of its elements during operation.A significant number of road accidents occur when drivers use emergency braking mode and up to 60% are accompanied by a loss of stability and controllability
It is generally recognized that one of the most promising ways to solve the problem of increasing active vehicle safety during braking is the use of anti-lock braking systems (ABS)
Equipping of vehicles with anti-lock braking systems (ABS) has exceeded 80% for passenger vehicles produced in Europe
Summary
Active vehicle safety is determined by its technical equipment, and by the serviceability of technical condition of its elements during operation. Equipping of vehicles with anti-lock braking systems (ABS) has exceeded 80% for passenger vehicles produced in Europe Recognizing this fact, legislatures of different countries are encouraging car manufacturers to implement ABS. In Western Europe, there are two international regulatory documents: Directive 71/320 of the EEC countries and UNECE Regulation No 13, which regulate timing of installation of ABS in all categories of vehicles with the exception of passenger cars In accordance with these documents, from October 1, 1991 on the territory of the EEC countries, operation of vehicles of category N3 (trucks with a gross weight of more than 16 t) and MZ (intercity buses with a gross weight of more than 12 t), as well as trailers and semi-trailers of category 04 (full weight of more than 10 tons), not equipped with ABS was. In Japan, these requirements have come into force since 1992, in the USA since 1993.According to EEC Directive 71/320, all buses and trucks with a gross weight of up to 3.5 t, manufactured after January 1, 1998, must be equipped with ABS
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