CN112728069B - 一种选择合适起步档的方法及*** - Google Patents

一种选择合适起步档的方法及*** Download PDF

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CN112728069B
CN112728069B CN202011556826.8A CN202011556826A CN112728069B CN 112728069 B CN112728069 B CN 112728069B CN 202011556826 A CN202011556826 A CN 202011556826A CN 112728069 B CN112728069 B CN 112728069B
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CN112728069A (zh
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程悦晓
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ZF Commercial Vehicle Systems Qingdao Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/52—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/60—Inputs being a function of ambient conditions
    • F16H59/66—Road conditions, e.g. slope, slippery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H2059/366—Engine or motor speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/60—Inputs being a function of ambient conditions
    • F16H59/66—Road conditions, e.g. slope, slippery
    • F16H2059/663—Road slope
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
    • F16H2061/009—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method using formulas or mathematic relations for calculating parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • F16H2061/0223—Generating of new shift maps, i.e. methods for determining shift points for a schedule by taking into account driveline and vehicle conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • F16H2061/023—Drive-off gear selection, i.e. optimising gear ratio for drive off of a vehicle

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

本发明公开了一种选择合适起步档的方法及***，属于商用车AMT应用领域。首先建立整车的起步阻力Mr和传动链速比Iwhole对应的数据表，然后根据当前整车起步阻力M'，在数据表中选择对应的传动链速比Iwhole_request；计算出基于Iwhole_request的当前变速器的需求速比IGB_request，根据IGB_request，在速比列表中匹配出速比大于或等于IGB_request的起步档范围，选择最小起步档作为当前起步档。本发明提出的一种选择合适起步档的***，包括存储模块、选择模块、计算模块以及查找模块。本发明针对不同的车型，都可以自动选择一个更合适的起步档，用于调整整车的传动链速比，以实现更佳的起步性能。

Description

一种选择合适起步档的方法及***
技术领域
本发明涉及商用车AMT应用领域，具体是一种选择合适起步档的方法及***。
背景技术
商用车的应用范围极广且复杂，且商用车的配置丰富，牵引车的后桥速比以及匹配的变速器速比千差万别，选择合适的起步档将会大大提升自动挡车辆起步的舒适性。
目前AMT应用领域基本是聚焦于变速器本身的挡位选择，未考其他能影响传动链速比的因素，比如后桥速比、轮胎半径等，无法根据除变速箱外的传动链速比/车重/坡度等适时的调整起步挡位。
发明内容
本发明的目的是提供一种选择合适起步档的方法及***，可以根据工况的不同控制车辆在一个合适的速比区间内起步，提供更好的起步性能，设计合理，克服了现有技术的不足，具有良好的效果。
为了实现发明目的1，提出一种选择合适起步档的方法，包括如下步骤：
步骤1：建立整车的起步阻力Mr和传动链速比Iwhole对应的数据表，其中r的取值为{1,2,…,N}，数据表中不同的起步阻力Mr对应不同的传动链速比Iwhole；
步骤2：检测当前整车起步阻力为M'，若Mr＜M'＜Mr+1，则依照步骤1的数据表，选取Mr对应的传动链速比；
步骤3：得到基于Iwhole_request的当前变速器的需求速比IGB_request为：
Figure BDA0002858976860000011
其中，GaRadHeb为轮胎滚动半径；
步骤4：根据步骤3得到的IGB_request，在速比列表中匹配出速比大于或等于IGB_request的起步档范围，选择最小起步档作为当前起步档。
优选地，在步骤1中：
整车的起步阻力Mr：
Mr＝M+M*Pin；
其中，M为车重，Pin为坡度；
整车传动链速比Iwhole：
Figure BDA0002858976860000021
其中，Es为发动机转速，Rt为轮胎滚动半径，Sfa为防抱死制动***ABS的轮速信号。
优选地，设置有坡度传感器实时检测当前整车坡度Pin。
优选地，在步骤4中的速比列表中，不同的速比对应不同的起步档位。
为了实现发明目的2，提出一种选择合适起步档的***，包括存储模块、选择模块、计算模块以及查找模块；
优选地，存储模块中，存储不同整车的起步阻力Mr和对应的传动链速比Iwhole；选择模块中，根据当前整车起步阻力M'，在存储模块中选择对应的传动链速比Iwhole_request；计算模块中，计算得到基于Iwhole_request的当前变速器的需求速比IGB_request；查找模块中，根据计算模块输出的IGB_request，在速比列表中查找出速比大于或等于IGB_request对应的最小起步档作为当前起步档。
优选地，在商用车的控制器***中装配有该***。
本发明所带来的益技术效果：
针对不同的车型，可以自动选择一个更合适的起步档，用于调整整车的传动链速比，以实现更佳的起步性能。
附图说明
图1为本发明中一种选择合适起步档的方法及***的流程示意图；
具体实施方式
为了便于本领域一般技术人员理解与实施本发明，下面结合附图和具体实施例对本发明的具体实施方式做进一步说明：
一种选择合适起步档的方法，包括如下步骤：
步骤1：建立整车的起步阻力Mr和传动链速比Iwhole对应的数据表，其中r的取值为{1,2,…,N}；数据表中不同的起步阻力Mr对应不同的传动链速比Iwhole；
整车的起步阻力Mr：
Mr＝M+M*Pin；
其中，M为车重，Pin为坡度；
整车传动链速比Iwhole：
Figure BDA0002858976860000031
其中，Es为发动机转速，Rt为轮胎滚动半径，Sfa为防抱死制动***ABS的轮速信号。
根据计算出来的整车起步阻力Mr和传动链速比Iwhole建立如下数据表：
Mr M1 M2 M3 M4 M5 M6 M7 M8
I<sub>whole_request</sub> I<sub>1</sub> I<sub>2</sub> I<sub>3</sub> I<sub>4</sub> I<sub>5</sub> I<sub>6</sub> I<sub>7</sub> I<sub>8</sub>
M1-M8，I1-I8，所有的值均为可标定状态。
步骤2：检测当前整车起步阻力为M'，若M1＜M'＜M2，则根据步骤1的数据表，选取M1对应的传动链速比；
步骤3：得到基于Iwhole_request的当前变速器的需求速比IGB_request为：
Figure BDA0002858976860000032
其中，GaRadHeb为轮胎滚动半径；
步骤4：根据步骤3得出的IGB_request，在速比列表中匹配出速比大于或等于IGB_request的起步档范围，选择最小起步档作为当前起步档。
比如装配了16档变速器的一台车，计算得到IGB_request＝8，在下列速比列表中匹配速比大于或等于8的档位，经过查找对比可以得到3档是速比大于8的最小速比档，选择3档作为车辆的当前起步档。
速比列表如下所示：
档位 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th
速比 13.12 11.05 9.17 7.72 6.3 5.3 4.38 3.68 3 2.52 2.1 1.76 1.44 1.21 1 0.84
一种选择合适起步档的***，如图1所示，包括存储模块、选择模块、计算模块以及查找模块；
具体地，存储模块中，存储不同整车的起步阻力Mr和对应的传动链速比Iwhole；选择模块中，根据当前整车起步阻力M'，在存储模块中选择对应的传动链速比Iwhole_request；计算模块中，计算得到基于Iwhole_request的当前变速器的需求速比IGB_request；查找模块中，根据计算模块输出的IGB_request，在速比列表中查找出速比大于或等于IGB_request对应的最小起步档作为当前起步档。
当然，上述说明并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换，也应属于本发明的保护范围。

Claims (4)

1.一种选择合适起步档的方法，其特征在于，包括如下步骤：
步骤1：建立整车的起步阻力Mr和传动链速比Iwhole对应的数据表，其中r的取值为{1,2,…,N}；
整车的起步阻力Mr为：
Mr＝M+M*Pin；
其中，M为车重，Pin为坡度；
整车传动链速比Iwhole为：
Figure FDA0003631639690000011
其中，Es为发动机转速，Rt为轮胎滚动半径，Sfa为防抱死制动***ABS的轮速信号；
步骤2：检测当前整车起步阻力为M'，且Mr＜M'＜Mr+1，则依照步骤1的数据表，选取Mr对应的传动链速比Iwhole_request；
步骤3：得到基于Iwhole_request的当前变速器的需求速比IGB_request为：
Figure FDA0003631639690000012
其中，GaRadHeb为轮胎滚动半径；
步骤4：根据步骤3得到的IGB_request，在速比列表中匹配出速比大于或等于IGB_request的起步档范围，选择最小起步档作为当前起步档；
在步骤4的速比列表中，不同的速比对应不同的起步档。
2.根据权利要求1所述的一种选择合适起步档的方法，其特征在于，设置有坡度传感器实时检测当前整车坡度Pin。
3.根据权利要求1或2所述的一种选择合适起步档的方法的***，其特征在于，包括存储模块、选择模块、计算模块以及查找模块；
所述存储模块中，存储不同整车的起步阻力Mr和对应的传动链速比Iwhole；所述选择模块中，根据当前整车起步阻力M'，在存储模块中选择对应的传动链速比Iwhole_request；所述计算模块中，计算得到基于Iwhole_request的当前变速器的需求速比IGB_request；所述查找模块中，根据计算模块输出的IGB_request，在速比列表中查找出速比大于或等于IGB_request对应的最小起步档作为当前起步档。
4.根据权利要求3所述的***，其特征在于，在商用车的控制器***中装配有该***。
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