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CN105083286A - 用于在电气起动时减小牵引力矩波动的方法 - Google Patents

用于在电气起动时减小牵引力矩波动的方法 Download PDF

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CN105083286A
CN105083286A CN201510251897.XA CN201510251897A CN105083286A CN 105083286 A CN105083286 A CN 105083286A CN 201510251897 A CN201510251897 A CN 201510251897A CN 105083286 A CN105083286 A CN 105083286A
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CN105083286B (zh
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A.特罗菲莫夫
M.巴特
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Sanger Automotive Germany GmbH
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Robert Bosch GmbH
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    • B60VEHICLES IN GENERAL
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    • B60W20/00Control systems specially adapted for hybrid vehicles
    • B60W20/10Controlling the power contribution of each of the prime movers to meet required power demand
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48Parallel type
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60W2530/00Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
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    • B60W2720/00Output or target parameters relating to overall vehicle dynamics
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/93Conjoint control of different elements

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  • Engineering & Computer Science (AREA)
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  • Mechanical Engineering (AREA)
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  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

本发明涉及一种用于运行机动车的方法,其中在起动过程中触发能够由马达驱动的电机(8)以释放驱动机动车的转矩(EM),其中同时如此触发机动车的制动系统(7),从而所述制动系统施加制动性的转矩(BM)。

Description

用于在电气起动时减小牵引力矩波动的方法
技术领域
本发明涉及一种用于运行机动车的方法、一种用于执行所述方法的计算单元和一种用于运行机动车的计算机程序。
背景技术
从公开的文献DE102014202058中已知一种用于运行机动车的方法,其中在起动过程中利用耦合到机动车的内燃机上的电动机如此触发电动机以释放转矩,从而由电动机所释放的转矩包含取决于曲轴角的份额,所述份额反作用于内燃机的牵引力矩的取决于曲轴角的波动。
发明内容
根据本发明提出一种用于运行机动车的方法。在另外的方面中提出具有独立权利要求的特征的计算单元和计算机程序。有利的设计方案是从属权利要求以及下述说明的对象。
如果在起动过程中触发能够由马达驱动的电机以释放驱动机动车的转矩,那么其中同时如此触发机动车的制动系统,从而所述制动系统施加制动性的转矩(例如施加到机动车的轮子上,从而其旋转运动获得制动效果),从而能够特别简单地控制起动过程。
已知的是,当在不平整行车道上行驶时(例如当行车道边缘直接位于轮前时),或者当在内燃机牵引的情况下必须通过汽缸中的空气的压缩和减压来克服气门弹簧力时,能够由马达驱动的电机的较高的转矩是必要的。如果突然克服了障碍物即例如行车道边缘或气门弹簧,那么对能够由马达驱动的电机来说不绝对简单可能的是,快速减小转矩,在这样的情况中这能感觉到窜动并因此不舒适。
如果现在有意识地超出由能够由马达驱动的电机所调整的驱动性的转矩,那么所述转矩能够通过制动系统例如ESP系统的制动性的转矩再次得以补偿。已知的是,制动系统的制动性的结构比能够由马达驱动的电机的驱动性的转矩的减小明显更快。因此从而能够实现尤其简单的舒适的起动。
如果反之所要求的总转矩升高,那么所述总转矩能够通过降低制动性的转矩适应于改变的要求。这比能够由马达驱动的电机的驱动性的转矩的升高明显更快。
在一种改型方案中可能的是,将所述起动过程借助于机动车的所求取的速度实际值来调节。如果识别出速度实际值快速升高,或者如果识别出速度实际值快速接近速度额定值或者如果识别出速度实际值超过了速度额定值,那么能够通过相应地触发制动系统来尤其简单地避免不舒适的窜动(Ruck)。
因此可能的是,在不被期望的较高的转矩需求的情况中(例如当机动车的前轮处在行车道边缘上)通过较高的驱动性的转矩成功和舒适地实施起动过程。被过高设置的驱动性的转矩在机动车的轮子上通过制动系统的制动性的转矩而调节。
以软件的形式执行方法也是有利的,因为这引起特别小的花费,尤其是当正在实施的计算单元还被用于其它的任务并且因此反正还存在时。用于提供计算机程序的合适的数据载体尤其是软盘、硬盘、闪速存储器、EEPROM、CD-ROM、DVD等。同样地也可能通过计算机网络(互联网、内联网等)下载程序。
本发明的其它优点和设计方案从说明书以及附图中得出。
本发明的实施例的各个方面在附图中示意性地示出并且在下文中参考附图进行详细地描述。
附图说明
图1是机动车的传动系的示意图;
图2是根据本发明的第一方面所述的起动调节器;
图3是根据本发明的第二方面所述的起动调节器。
具体实施方式
图1示意性地示出了机动车的传动系,所述机动车的传动系具有能够由马达驱动的电机。在实施例中所述能够由马达驱动的电机是电动机8,但是其例如也能够是起动发电机。
在实施例中机动车也具有内燃机6,所述内燃机却不是必然必要的。在实施例中机动车还具有(未示出的)手动的离合器,利用所述离合器内燃机6和电动机8能从机动车的剩余的传动系中分离,例如以便实现传动装置的换挡。在实施例中电动机通过皮带传动装置30与内燃机6相连接。这同样不是必然必要的。
对于本发明来说重要的仅仅在于,能够由马达驱动的电机,即在实施例中的电动机8与机动车的车轮如此耦合,从而其能够驱动机动车。
在实施例中电动机8由电动机控制器50触发,内燃机6由马达控制器40触发。两个控制器通过总线系统70互相通信。制动系统7,例如ESP(电子稳定程序)通过制动控制器80触发,所述制动控制器与马达控制器40通过另一总线系统71通信。
图2示出了用于控制机动车的起动过程的装置的第一方面。转矩求取单元100求取总转矩DM,所述总转矩在机动车的起动过程中对于机动车的驱动并且对于克服机动车内部阻力(例如惯性矩)是必要的。转矩分配单元110将所述总转矩DM分配到由制动系统7调整的制动性的转矩BM和由电动机8调整的驱动性的转矩EM中。
优选地,驱动性的转矩EM和(负的)制动性的转矩BM的总和与总转矩DM相等,其中进一步优选地,驱动性的转矩EM比总转矩大出一个偏移量,从而制动性的转矩BM大于零。
于是如果必要的总转矩DM跳跃式地升高,那么不仅能够通过提高驱动性的转矩EM,而且替代地或补充地也通过减小制动性的转矩BM来应对这种要求。
图3示意性示出了用于起动的装置的另一方面。图3示出了用于机动车的起动过程的起动调节器14,并且起动调节器有可能用于通过电动机8在封闭的传动系中起动内燃机6。所述起动调节器14优选编程技术地在马达控制器40中实施。
起动调节器14在当前实施例中具有调节器18、制动干预调节器26、马达牵引力矩确定单元20和转矩预控制单元22。起动调节器从额定速度确定单元16中接收速度额定值GSW。调节器18基本上用于,如此规定由电动机8释放的转矩,从而达到所期望的速度,即速度额定值GSW。马达牵引力矩确定单元20与转矩预控制单元22基本上共同用于使得由电动机8所释放的转矩如此变化,从而其反作用于内燃机6的牵引力矩的取决于曲轴角的波动,理想地将所述波动补偿到零。
起动调节器14此外还具有用于触发电动机8的控制单元24。
在当前实施例中构造或设置额定速度确定单元16,以便读取时间t、道路仰角w、机动车重量m和尤其是油门踏板的油门操纵单元的位置x作为输入参量。额定速度确定单元16由这些输入参量确定速度额定值GSW。优选地设置额定速度确定单元16,以便如此确定速度额定值GSW,从而对乘客来说起动过程舒适地进行,也就是实现了合适的车辆加速。尤其应该避免的是,由传动系传递过大的转矩或过小的转矩。过大的转矩引起过强的加速,该加速对乘客造成不舒适的影响(除了当驾驶者期望如此时(换低档或油门过大)),过小的转矩能够在起动时在振动方面有利,因为传动系并且有可能马达缸体较长时间地在自共振频带(Resonanzband)中运行。
速度额定值GSW是调节器18的输入参量,所述调节器在本实施例中具有PID调节器。向调节器18传输机动车的由速度求取单元60所求取的速度实际值GIW作为另外的输入参量。所述调节器18提供调整参量STG作为输出,所述调整参量导引到控制单元24。需要强调的是,额定速度确定单元和调节器在实施例中仅仅示例性地示出,并且只是有利地示出,但是并未示出本发明的强制必要的特征。
在当前实施例中构造或者设置马达牵引力矩确定单元20,以便读取曲轴角α、内燃机温度T、内燃机转速n和汽缸填充度f作为输入参量。马达牵引力矩确定单元20由所述输入参量尤其在使用特性曲线的情况下确定马达牵引力矩MSM,所述特性曲线被传输给控制单元24中。需要强调的是,除曲轴角α外所有其它的输出参量是可选的。
在当前实施例中构造或者设置转矩预控制单元22,以便读取传动装置12的置入的档位g、内燃机起动位置p,也就是初始的曲轴角、道路仰角w和机动车重量m作为输入参量。转矩预控制单元22由这些输入参量确定转矩调整参量DST,将所述转矩调整参量传送给控制单元24。转矩预控制单元22基本上用于考虑(也就是说反作用或者理想地补偿到零)以取决于曲轴角的方式对有待释放的转矩起作用的参量,尤其比如起动阻力、滚动阻力、下坡从动力(Hangabtrieb)。需要强调的是,转矩预控制单元在实施例中仅仅示例地示出,并且未示出本发明的强制必要的特征。
构造或者设置控制单元24以便分析调整参量STG、马达牵引力矩MSM和转矩调整参量DST并且如此触发电动机8,从而尽可能补偿马达牵引力矩并且由此均匀地、也就是基本上无窜动地实施起动过程和内燃机6的起动。其中把无窜动理解为加速,所述加速由机动车的乘客感知为均匀的和无波动的。尤其在例如几秒的、较长时间段上持续地感觉到加速。
优选能够规定的是,利用提高的转矩触发电动机8,例如方法是,以一偏置量提高由转矩预控制单元22所求取的转矩调整参量DST。
在实施例中也将速度实际值GIW和速度额定值GSW传递给制动干预调节器26。制动干预调节器26求取的是,速度实际值GIW是否超过速度额定值GIW,并且在所述情况中如此触发制动系统7,从而将机动车制动。
起动调节器14、额定速度确定单元16、调节器18、马达牵引力矩确定单元20、转矩预控制单元22、控制单元24和制动干预调节器26能够具有硬件组件和/或软件组件。

Claims (8)

1.用于运行机动车的方法,其中在起动过程中触发能够由马达驱动的电机(8)以释放驱动机动车的转矩(EM),其中同时如此触发机动车的制动系统(7),从而所述制动系统施加制动性的转矩(BM),其中所述制动系统(7)的触发取决于机动车的速度实际值(GIW)并且也取决于机动车的速度额定值(GSW),
其中当所述速度额定值(GSW)大于所述速度实际值(GIW)时,就制动性地触发所述制动系统(7)。
2.按照权利要求1所述的方法,其中在所要求的总转矩(DM)提高时就降低所述制动性的转矩(BM)。
3.按照前述权利要求中任一项所述的方法,其中由能够由马达驱动的电机(8)所释放的转矩包含取决于机动车的内燃机(6)的曲轴的角度的份额(DST),所述份额DST反作用于以独立于曲轴角的方式作用到有待释放的转矩上的参量。
4.按照前述权利要求中任一项所述的方法,其中为了释放转矩而如此触发能够由马达驱动的电机(8),从而由所述电机所释放的转矩包含取决于内燃机(6)的曲轴的角度的份额(MSM),所述份额MSM反作用于内燃机(6)的牵引力矩的取决于曲轴角的波动。
5.按照权利要求4所述的方法,其中在预控制的过程中确定所述取决于曲轴角的份额(MSM)。
6.计算单元(40),其构造用于执行按前述权利要求1到5中任一项所述的方法。
7.计算机程序,当在所述计算单元(40)上实施所述计算机程序时,所述计算机程序促使所述计算单元(40)执行按权利要求1到5中任一项所述的方法。
8.可由机器读取的储存介质,其具有按照权利要求7所述的、储存在所述储存介质上的计算机程序。
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