【042】2ABS汽車防抱死制動(dòng)系統(tǒng)設(shè)計(jì)

【042】2ABS汽車防抱死制動(dòng)系統(tǒng)設(shè)計(jì),042,abs,汽車,抱死,制動(dòng),系統(tǒng),設(shè)計(jì) 摘 要 ABS系統(tǒng)可以顯著提高或改善汽車緊急制動(dòng)時(shí)的操控性和穩(wěn)定性，縮短了制動(dòng)距離，是一種新型的汽車電子控制產(chǎn)品，并得到了越來(lái)越廣泛的應(yīng)用。 本文以轎車為研究對(duì)象，展開(kāi)對(duì)汽車ABS的研究。主要完成了以下的工作： 通過(guò)對(duì)單個(gè)車輪時(shí)的受力分析確定了影響車輪附著系數(shù)的主要因素； 通過(guò)比較電磁感應(yīng)式輪速傳感器和霍爾效應(yīng)傳感器的性能優(yōu)缺點(diǎn)，采用并設(shè)計(jì)了霍爾效應(yīng)式輪速傳感器； 通過(guò)對(duì)控制結(jié)構(gòu)的分析設(shè)計(jì)了以INTEL公司生產(chǎn)的80C196KC單片機(jī)為核心的實(shí)時(shí)控制系統(tǒng)，包括信號(hào)輸入電路、控制輸出電路、驅(qū)動(dòng)電路等硬件部分； 經(jīng)比較各種控制方案，確定了“邏輯門限制法”作為控制方案，并選用加速度和滑移率的組合作為控制參數(shù)。采用事件門限來(lái)計(jì)算車輪的轉(zhuǎn)速。 本文通過(guò)學(xué)習(xí)比較根據(jù)所學(xué)只是設(shè)計(jì)了ABS控制系統(tǒng)。從理論上實(shí)現(xiàn)了ABS的控制功能，完成了設(shè)計(jì)要求。在設(shè)計(jì)過(guò)程中對(duì)汽車制動(dòng)理論和制動(dòng)裝置有了較為深入的了解，擴(kuò)大了自己的知識(shí)面，自己解決問(wèn)題的能力也得到了提高。 關(guān)鍵詞：防抱死制動(dòng)系統(tǒng) 電子控制單元 門限值滑移率 輪速傳感器  ABSTRCT Anti-lock Braking System (ABS) is an important device to improve the active safety of vehicle. ABS can greatly improve steering control ability during the brake maneuver and shorten stopping distance. Today with the improvement of the vehicle speed, ABS is applied widely. With the car as the research object, the research on ABS has been carried on. And a series of work were finished: The dynamic situation of wheel was analyzed. Then, the model of hydraulic ABS was built and assured main complication affect the wheeler appendiculate coefficient. By comparing the capability of electromagnetism rotate speed sensor with Houer rotate speed sensor, we chose the later, and have designed a sensor of this kind. Via analyse the control system structure, we have designed a real-time system with the singlechip 80c196kc produced by Intel company .It comprises with signal input, singlechip system, output, drive electro circuit and otherwise parts of hardware segment. After comparing the different projects of the controllers, the method of logic rate has been comfirmed, and the combination of acceleration and slippage rate as been chose as control parameters. The time gate method to calculate the wheel rotate speed was adopted. In this paper, based on the knowledge I have mastered, I designed a ABS system and realized the control function in theory, accomplished my assignment. I have gotten a in-depth understand of motorcar trig theory and equipment. It widen my knowledge scope, improved my ability of solving problems. Kyewords: ABS electronic control slippage gate rotate speed sensor