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首页> 外文会议>EAEC European automotive congress >A NEW ALGORITHM FOR VEHICLE DRIVE OFF MANAGEMENT IN MANUAL TRASMISSION VEHICLES
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A NEW ALGORITHM FOR VEHICLE DRIVE OFF MANAGEMENT IN MANUAL TRASMISSION VEHICLES

机译：一种新的手动传输车辆车辆驱动器算法

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摘要

The drive off is defined as the maneuver in which the engine and the driveline are mechanically coupled, through the operation of the clutch, in order to transmit motion to the vehicle. When the internal combustion engine (ICE) is used in automotive applications, the intrinsic inability to generate torque at low operating speed could create bad drivability feelings to the driver, due to engine stall occurrences, engagement shock phenomena or RPM fall. Moreover, in the last years the automotive engineering has moved toward downsized engine to improve the fuel economy, to reduce the emission and to reduce the production costs. Despite the use of the over-boost technology, if an engine is downsized, the power output at low engine speed is reduced: worsening the drive off manoeuvre that is one of the most important for the customer satisfaction. In manual transmission automobiles, drive off is much more critical due to the inability of the engine control unit (ECU) to manage the actuation of the clutch. Other aspects that negatively affect the drive off maneuver are: 1.unavoidable dispersion between the pedal position and the actual position of the clutch plates 2.backlash of the accelerator pedal 3.increase of vehicle weight and of the road load; i.e. uphill road 4.clutch wear The aim of the presented work is to solve the customers complaints due to uncomfortable drive off manoeuvres. The number of this complaints is rising on manual transmission vehicles equipped with downsized engines. In this article an innovative control algorithm is presented, that is able to cope with all the difficulties presented above, in order to manage the vehicle drive off manoeuvre (Drive off Management Algorithm, DoMA). The main goal of DoMA is to reduce the occurrences of engine stall and to avoid the engagement shock phenomena during the drive off maneuvers. To achieve its goals, DoMA recognizes the start of a drive off maneuver, it raises the engine speed in order to increase the available engine torque before coupling phase, it increases the authority of idle speed control to manage the growing total inertia during coupling phase and, at the end, it smoothly reduces its action to avoid the engagement shock. DoMA has been firstly tested in simulation environment (MATLAB/Simulink) on a simplified powertrain model; it has then been tested on vehicle using Rapid Control Prototyping environment (RCP). In both cases DoMA has shown a good performance, confirmed by objective measurements and drivers evaluations. In the second chapter the drive off improvement reasons are described; during the chapter three the vehicle equipment is presented; in the fourth chapter, DoMA algorithm is described. In the chapter five the experimental activity and its results are discussed. In the end the conclusion are drawn.
机译：驱动关闭被定义为其中发动机和传动系机械地耦合，通过离合器的操作，以传递运动给车辆的操纵。当内燃机（ICE）在汽车应用中使用，内在无法产生在低操作转速扭矩可能会造成不好的驾驶感受，驱动程序，由于发动机熄火事件，接合震动现象或RPM下跌。此外，在过去几年中的汽车工程已朝着小型化发动机转移到提高燃油经济性，减少排放，降低生产成本。尽管使用过Boost技术，如果发动机的小型化，在发动机低转速的动力输出降低：断开驱动器的动作是对客户满意度的最重要的一个恶化。在手动变速器的汽车，驱除要重要得多，由于发动机控制单元（ECU）的无力管理离合器的致动。该驱动器产生负面影响关闭操纵其他方面是：所述踏板位置和离合器板的实际位置之间1.unavoidable分散2.backlash车辆重量和道路负载的加速器踏板3.增加的;即上山的路4.clutch穿介绍工作的目的是为了解决客户投诉，因不舒服驱动器关闭演习。该投诉的数量呈上升趋势上装有小型发动机的手动变速器的车辆。在这篇文章中的创新的控制算法，即能应付所有以上提出的困难，以管理车辆行驶过动作（驱动器关闭管理算法，DOMA）。 DOMA的主要目的是为了减少发动机熄火的发生和断开驱动器的操纵过程中，避免接合震动现象。为了实现这一目标，DOMA识别驱动器关闭动作的开始，它提高了发动机转速以增加耦合阶段之前可用的发动机扭矩，它增加了怠速控制耦合阶段期间管理不断增长的总惯量的权威性和，在最后，它平滑地降低了它的行动，以避免接合冲击。 DOMA已在模拟环境（MATLAB / Simulink的）上的动力传动系的简化模型中，首先测试;它然后被在车辆中使用快速控制原型环境（RCP）进行测试。在这两种情况下，DOMA已经显示出了良好的性能，通过客观的测量和司机评价证实。在第二章中的驱动关断的改善的原因被描述;章节3中所述车载设备被呈现;在第四章中，DOMA算法进行说明。在第五章的实验活动及其结果进行了讨论。最终的结论是绘制。

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