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Study On Fuzzy Control Of Automobile ABS Performance Detection Stand And Simulation

Posted on:2005-09-24Degree:MasterType:Thesis
Country:ChinaCandidate:Y S YangFull Text:PDF
GTID:2132360125950419Subject:Carrier Engineering
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From automobile invention to today ,more than one century have gone through, with the modern science and technology fast development and the unceasing raising of people's living standard, the requirement of people for automobile performance is higher than before, from the earliest requirement for automobile power and cross-country gradually to economy,comfortableness and safety. The automobile having no ABS in urgent braking ,the wheels will be very rapidly to hold to die, under this kind of condition, the automobile having lost the ability of resistance side force basically, and occurring the dangerous conditions easily such as sideslip,losing the changing direction ability and swinging etc, and having disadvantages of vehicle safety. But the automobile having ABS, when urgent braking can raise the controlling stability maximumly in the course of automobile braking, and shorten the braking distance efficiently, so ensured the safety of travelling vehicle on certain level. Because of the superiority of ABS, the installation of ABS on automobile generally is unavoidable tendency, and along with our country strict requirement of automobile performance regulations, it is imperative to carry out ABS indoor detection. Since our country have not the ABS testing stand which fitting the vehicle detection line using,reliable performance and complete function. On this base, the paper carried out more detailed research of ABS detection stand for suiting the automobile integral performance detection line application, had put forward a kind of ABS detection stand's design thought that suiting the indoor ABS detection , and have carried out theoretical analysis and simulated simulation.The braking performance of automobile is the one of major performances of automobile. With the increase of the highway of our country , and the raising of automobile speed, the automobile braking performance is very important for ensuring traffic safety, with the same time ,ABS is important to guarantee the automobile travelling safety. However, with the vehicle used and some other factors, which can probably cause the automobile anti-lock braking system (ABS) to failure or drop the character of service, and have brought hidden trouble to the safety of vehicle travel. However, the existing detection means can not satisfy the fast and accurate detection on the automobile performance detection line, so it is necessary to study a kind of ABS detection equipment that satisfies the requirement. In the paper, have analyzed the basic principle,structural, have also analyzed the different channels and arranging ways of ABS and their influence of ABS performance. Have analyzed the regulation course of raking pressure and regulation logic when the vehicle is braked on the difference adhering coefficient road. For having analyzed the movement and force of the automobile which equipped with ABS when braking on road, have established the vehicle model when braking. In the paper, having analyzed the automobile's force and movement when the automobile braking on different adhering coefficient slip layers, the slip first appears on the low adhering coefficient layer surface. Since the existing test site and detection equipments can only offer the fix adhering coefficient normally, in ABS detection can not offer the low adhering coefficient road surface to make it enter into the working cycle. According to the analysis of automobile braking on slip layers, if we can offer the slip layers of different adhering coefficient, so we can offer different adhering coefficient road surface to vehicle, and solve the difficulty of simulation of low adhering coefficient road in reality. In the paper, according to this thoughts, replace the slip layers in experiments with cylinders, and use the electromagnetism slippery clutch to imitate the different adhering coefficient layers, so when the automobile braking on the stand, because of the adhering coefficient between cylinder and tire high, and the simulation adhering coefficient of th...
Keywords/Search Tags:Anti-lock braking system, ABS detection stand, Inertia electric simulation, Fuzzy control Computer emulation
PDF Full Text Request
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