基于windowsce的混合動(dòng)力汽車多信息顯示系統(tǒng)設(shè)計(jì)(編輯修改稿)
2024-07-21 18:44 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 速時(shí)，用后輪輪速作為參考車速計(jì)算驅(qū)動(dòng)輪滑轉(zhuǎn)率會(huì)造成計(jì)算偏差，引起驅(qū)動(dòng)防滑控制系統(tǒng)誤干預(yù)，為此提出了驅(qū)動(dòng)輪滑轉(zhuǎn)率計(jì)算的修正算法。該修正算法不需要增加前輪轉(zhuǎn)角傳感器，而是采用兩非驅(qū)動(dòng)輪輪速估計(jì)車身橫擺角速度和汽車前輪轉(zhuǎn)角，進(jìn)而計(jì)算出前輪參考輪速，并將前輪參考輪速代替車速對(duì)轉(zhuǎn)彎工況的驅(qū)動(dòng)輪滑轉(zhuǎn)率計(jì)算進(jìn)行修正。試驗(yàn)結(jié)果表明，該修正算法消除了滑轉(zhuǎn)率計(jì)算誤差，可防止汽車在高附著路面上轉(zhuǎn)彎加速時(shí)驅(qū)動(dòng)防滑控制系統(tǒng)的誤干預(yù)。主題詞：轉(zhuǎn)向加速工況 驅(qū)動(dòng)防滑控制系統(tǒng) 滑轉(zhuǎn)率 算法Algorithm Research on Slip Ratio of Acceleration Slip Regulation under Vehicle Cornering SituationLi Zhiyuan1, ZhangBiao2, LiHaodong1, Chang Yunxia1, Hao Ziyang1(1. Hebei University。 2. Beijing Institute of Technology)【Abstract】The calculation of driving wheel slip ratio by using rear wheel speed as reference speed could lead to a calculation error and wrong intervention of acceleration slip regulation (ASR) when vehicle was turning at low speed, therefore a modified algorithm was introduced for calculating driving wheel slip ratio under cornering situation. In the algorithm, the yaw rate and the steering wheel angle of vehicle are firstly estimated by two driven wheels without corresponding sensors, then the front wheel reference speed was obtained, and driving wheel slip ratio was amended with front wheel reference speed replacing vehicle speed finally. Experimental results showed that the calculation error of slip ratio was eliminated, and wrong intervention when the vehicle is accelerating on highadhesion road surface disappeared after the modification. Key words：Vehicle cornering, Acceleration Slip Regulation, Slip ratio, Algorithm液力緩速器制動(dòng)過(guò)程動(dòng)態(tài)仿真研究賈云海1，3 張文明1 楊玨1 董翠燕2 高全峰2 宋飛3（； ；）【摘要】采用流體力學(xué)中的束流理論，分析了液流在液力緩速器中的動(dòng)力學(xué)和運(yùn)動(dòng)學(xué)狀態(tài)，推導(dǎo)出液力緩速器制動(dòng)力計(jì)算公式和充放液時(shí)間計(jì)算公式。在數(shù)學(xué)計(jì)算軟件MATLAB的仿真工具箱SIMULINK中建立液力緩速器制動(dòng)力動(dòng)態(tài)仿真模型，以某45t重型車輛參數(shù)作為仿真數(shù)據(jù)，考慮液力緩速器充液時(shí)間，得到了一組重型車輛在不同工況下緩速器制動(dòng)仿真結(jié)果。分析仿真結(jié)果并得出了相關(guān)結(jié)論。主題詞： 液力緩速器 制動(dòng) 動(dòng)態(tài)仿真 Dynamic Simulation Research of Hydrodynamic Retarder in Brake ProcessJia Yunhai1,3 Zhang Wenming1 Yang Jue1 Dong Cuiyan2 Gao Quanfeng2 Song Fei3( of Science and Technology Beijing；2. Beijing Shougang Institute of Duty Truck； Institute of ElectroMachining)【Abstract】Based on the beam current theory of hydrodynamics, the dynamics and kinematics status of fluids in hydrodynamic retarder are analyzed, the calculation formulas of retarder brake force and oil charge and release time are deduced. Braking dynamic simulation model is built in SIMULINKtoolbox。 based on simulation data for a 45t heavyduty truck, and considering retarder oil charge time, the braking simulation results under different working conditions are obtained, finally the relative conclusions were also obtained. Key Words：Hydrodynamic Retarder。 Brake。 Dynamic Simulation溫度對(duì)共軌柴油機(jī)起動(dòng)性能的影響張 斌1 李立人2 董偉2 （；2吉林大學(xué)）【摘要】以Bosch第2代高壓共軌燃油噴射系統(tǒng)為基礎(chǔ)，建立了高壓共軌試驗(yàn)測(cè)控系統(tǒng)。研究了進(jìn)氣溫度和冷卻液溫度對(duì)高壓共軌柴油機(jī)起動(dòng)時(shí)間和排放性能的影響規(guī)律。試驗(yàn)結(jié)果表明，在不同起動(dòng)油量和不同主噴油提前角條件下，進(jìn)氣預(yù)熱有利于縮短起動(dòng)時(shí)間、降低排放；在起動(dòng)時(shí)間－冷卻液溫度曲線和HC排放－冷卻液溫度曲線上均存在最佳冷卻液溫度點(diǎn)，該點(diǎn)的起動(dòng)性能最好。主題詞：共軌柴油機(jī), 起動(dòng)特性，進(jìn)氣溫度，冷卻液溫度Influence of Temperature on Starting Performance of Common Rail Diesel EngineZhang Bin1 Li Liren2 Dong Wei2(1. Technical Centre of Dongfeng Motors Corporation。 2 Jilin University)【Abstract】The test and control system of the high pressure mon rail diesel engine are established based on BOSCH high pressure mon rail fuel injection system of the second generation. The external factors which influence starting time and emission of high pressure mon rail diesel engine, such as: intake air and coolant temperature, are studied in the paper. Test results show that: under different starting fuel quantity and main injection advance angles, preheating the intake air is beneficial for shortening starting time and reducing emission. There is an optimum value for the coolant temperature not only in
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