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<正>对于大多数装备整车控制器的电动汽车,整车控制器在全车控制单元中担任非常重要的角色。整车控制器的英文全称为Vehicle Control Unit,简称VCU,它与电机操纵机构、电子加速踏板等部件共同构成整车控制系统。整车控制器采集电子加速踏板位置传感器信号、制动开关信号以及其他部件信号,监测车辆信息及驾驶员意图,并根据扭矩模型等算法做出相应判断后,控制下层各部件控制器及执行器的动作,驱动汽车正常行驶。 相似文献
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为解决利用车辆机理模型设计控制器时的自适应问题,针对非线性车辆动力学系统,提出一种基于数据驱动的横向稳定性控制策略。利用递推子空间模型辨识算法设计预测器,根据预测器的形式并结合车辆横向稳定性控制提出一种具有模型自适应特性的预测控制器。利用MATLAB/Simulink建立7自由度整车动力学仿真模型,结合国际标准ISO/DIS 7401:2000以及ISO 3888:1999进行实车道路试验,并对仿真模型进行了数值验证,基于整车动力学模型,对自适应预测控制器的控制效果进行了数值仿真验证,证明了算法的有效性和鲁棒性。 相似文献
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智能车辆主动避撞与稳定性联合控制仿真 总被引:1,自引:0,他引:1
为改善车辆在主动避撞过程中的车辆动力学特性,在MATLAB/Simulink环境下结合驾驶员模型分别设计了基于模糊控制理论的主动避撞控制处理器、制动稳定性控制器和转向稳定性控制器,从而能够在车辆主动避撞过程中综合考虑避撞和稳定性两个目标.并在ADAMS中建立了整车模型,联合MATLAB进行了仿真研究,仿真结果证明,在相... 相似文献
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设计一种基于LDO芯片TLE4275的24V汽车电源模块,增加前级降压电路和单片机监控功能,应用于汽车车身控制器的24V转5V电源。给出该电源的电路图及软件控制方法。试验测试结果表明:即使在极端负载条件下,该电源模块输出电压稳定、温度特性好,且实现成本低。 相似文献
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介绍了所研制的D(T)N2-200(400)型汽车制动蹄用凸焊机的设计原理,基本结构以及KD(T)-2051型微机控制器的控制原理,性能及特点,指出单片机恒流控制器具有精度高,功能强及性能稳定等特点,具有很好的应用和发展前景。 相似文献
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为对无刷直流电机实现开/闭环两部分控制,文章介绍了基于Freescale 9S12XS128芯片实现对电动汽车无刷直流电机控制器的设计。程序的编译采用了Codewarrior软件,闭环控制即在车上安装了振荡传感器,可根据不同的振荡程度自行调整无刷电机的转速。开环控制是外设有滑动变阻器,用户可以通过调整滑动变阻器来控制输入电压信号的大小,进而调整PWM的输出来控制电机的转速。此款控制器实现了电机的开/闭环控制,还设计有显屏,可显示速度、电流、电压及消耗的电量,且预留有无线输出口并配有LabVIEW上位机软件可用于调试电机和采集数据。 相似文献
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Dirk E. Smith Robert E. Benton 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1996,26(2):127-142
Advanced Vehicle Control Systems (AVCS), when realized, should substantially increase the convenience and safety of highway travel. Automated lateral control is an important step in the realization of AVCS. Much research has been concerned with lateral control during low-g maneuvers. However, before passengers' lives are in the hands of any automated laterally-controlled vehicle, the vehicle controller must be designed to respond to emergency situations where high-g maneuvers may be necessary.
This paper presents the development of a nonlinear-gain-optimized (NGO) controller for emergency automated lateral control of four wheel steered automobiles. Continuous gain equations (GE) are used to account for changes in the vehicle speed. The NGO controller uses a linear vehicle/tire model to define the state model. The response of a nonlinear vehicle/tire model is used to choose the performance index that optimizes the feedback gains for high-g emergency maneuvers at discrete speeds. Continuous gain equations are then derived as least-square approximations to each set of gains.
The performance of the four-wheel-steer continuous gain equations (4WS-GE) controller is compared to that of a two-wheel-steer continuous gain equations (2WS-GE) controller. Significant improvements in vehicle response are realized by using the 4WS-GE controller. The robustness of the controller's performance is examined with respect to changes in tire parameters and changes in vehicle mass. 相似文献
This paper presents the development of a nonlinear-gain-optimized (NGO) controller for emergency automated lateral control of four wheel steered automobiles. Continuous gain equations (GE) are used to account for changes in the vehicle speed. The NGO controller uses a linear vehicle/tire model to define the state model. The response of a nonlinear vehicle/tire model is used to choose the performance index that optimizes the feedback gains for high-g emergency maneuvers at discrete speeds. Continuous gain equations are then derived as least-square approximations to each set of gains.
The performance of the four-wheel-steer continuous gain equations (4WS-GE) controller is compared to that of a two-wheel-steer continuous gain equations (2WS-GE) controller. Significant improvements in vehicle response are realized by using the 4WS-GE controller. The robustness of the controller's performance is examined with respect to changes in tire parameters and changes in vehicle mass. 相似文献
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纯电动汽车整车控制器进展 总被引:3,自引:0,他引:3
在广泛研究国内外纯电动汽车整车控制器的工作原理和系统结构的基础上.总结了如下特点:国外纯电动汽车整车控制器主要用于结构复杂的四轮驱动纯电动汽车和轮毂电机纯电动汽车中。对于单电机驱动的纯电动汽车,通常由电机控制器代替整车控制器实现控制功能。在国内市场没有纯电动汽车整车控制器产品的生产和销售.整车控制器停留在试验室研发阶段。本文可为企业开发出口纯电动汽车整车控制器和国家制订标准提供参考。 相似文献
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以汽车操纵稳定性及行驶平顺性为控制目标,提出一种在线可调整的模糊控制算法,其模糊控制规则表可以用解析的方法进行计算。针对简化的汽车模型,为控制悬架系统的振动设计了自调整模糊控制器。与自适应控制主动悬架系统相比较,在两自由度悬架系统试验台架上进行了对比试验研究,结果表明该算法对汽车的振动控制具有明显效果,进一步说明提出的算法对汽车悬架系统的振动控制具有较好的适应性。 相似文献