【正文】 ..................................... 15 直流電機(jī)等效電路分析 ..................................................................................................... 15 直流電機(jī) PWM驅(qū)動(dòng)原理分析 ........................................................................................... 16 本章小結(jié) ................................................................................................................................ 17 4 ETC硬件系統(tǒng)設(shè)計(jì) ........................................................................................................................ 18 ETC硬件設(shè)計(jì)與方案設(shè)計(jì) ....................................................................................................... 18 硬件單元設(shè)計(jì)要求 ............................................................................................................ 18 硬件單元總體設(shè)計(jì) ............................................................................................................ 18 硬件控制芯片選型 ............................................................................................................ 19 電源模塊電路設(shè)計(jì) .................................................................................................................. 19 角位移信號(hào)采集功能設(shè)計(jì) ........................................................................................................ 20 模擬信號(hào)調(diào)理電路設(shè)計(jì) ..................................................................................................... 20 A/D 轉(zhuǎn)換芯片介紹 ............................................................................................................ 21 A/D 轉(zhuǎn)換電路的設(shè)計(jì) ......................................................................................................... 21 A/D 轉(zhuǎn)換器電路板設(shè)計(jì)注意事項(xiàng) ....................................................................................... 22 執(zhí)行控制模塊 ......................................................................................................................... 22 邏輯控制電路 ................................................................................................................... 23 MOSFET 驅(qū)動(dòng)電路 ........................................................................................................... 24 H 橋電動(dòng)機(jī)驅(qū)動(dòng)電路 ......................................................................................................... 25 通信模塊設(shè)計(jì) ......................................................................................................................... 26 CAN 總線通信電路 ........................................................................................................... 26 RS232 串口通信電路 ......................................................................................................... 27 非接觸式角位移測(cè)量方法的研究 ............................................................................................. 27 磁阻式角位移傳感器原理 .................................................................................................. 27 磁阻式角位移傳感 器測(cè)量系統(tǒng)結(jié)構(gòu) .................................................................................... 28 本章小結(jié) ................................................................................................................................ 28 5 總結(jié) ............................................................................................................................................. 29 總結(jié) ....................................................................................................................................... 29 參考文獻(xiàn) ......................................................................................................................................... 30 致 謝 ............................................................................................................................................. 31 附 圖 ............................................................................................................................................. 32 中國(guó)地質(zhì)大學(xué)長(zhǎng)城學(xué)院 2020 屆畢業(yè)論文 1 1 緒論 汽車電子技術(shù) 隨著汽車保有量的不斷增多，導(dǎo)致石油能源消耗的急劇 增加，引起能源枯竭，油價(jià)上揚(yáng) 。 關(guān)鍵詞 電子節(jié)氣門，電控系統(tǒng)，變結(jié)構(gòu)滑模，控制算法，硬件系統(tǒng) Abstract Auto electronic control has made rapid progress by more requirements of the society, pending tougher emission standards and the developments in electronics, and DrivebyWire is one of the most important technologies. ETCS (electronic throttle control system) is one part of the powertrain control system, it plays a very importantrole in powertxain control. This thesis firstly introduced the ETCS, then modeled and simulated its dynamics and electrics characters in Matlab/simulink/stateflow, and the model based embedded software code isgenerated, then test is curried out in the realtime workshop. The whole thesis consists of six sections. Riefly states the ETC technique developinghistory, features, the current application situation and products, and then points out the significance of the thesis and the main content of the research work. Analyzes the dynamics of each part of the throttle body, including pneumatics, spring torque, friction etc, and then deduces mathematical model of ETCS. And system identification is also done using the toolbox of Matlab. In the mechanical and electrical control system, the most universal controller is a PID controller, the parameters of PID controller is easy to set, in the longterm application has accumulated rich experience, is in continuous control system technology is mature, widely used as a controller. PID controller for analog PID controller and digital PID controller, the system uses a single chip control, the system used in the design of digital PID control algorithm. Again on the electronic throttle control system function analysis, the electronic throttle control system hardware circuit prises a control chip module, input module, output module and a munication module in detail, and the design of the magoresistive sensor based on the angular displacement measuring system. Finally on the subject