CN101334107A - 用于混合动力车辆的主控离合器诊断 - Google Patents

用于混合动力车辆的主控离合器诊断 Download PDF

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CN101334107A
CN101334107A CNA2008100037956A CN200810003795A CN101334107A CN 101334107 A CN101334107 A CN 101334107A CN A2008100037956 A CNA2008100037956 A CN A2008100037956A CN 200810003795 A CN200810003795 A CN 200810003795A CN 101334107 A CN101334107 A CN 101334107A
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transmission state
module
signal
hybrid gearbox
control system
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CN101334107B (zh
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M·H·科斯丁
T·萨达西万
P·E·吴
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GM Global Technology Operations LLC
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K6/00—Arrangement 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
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Abstract

本发明涉及用于混合动力车辆的主控离合器诊断，并具体地公开了一种调节车辆内混合动力变速器的操作的方法，包括：使用第一模块确定所需变速器状态；使用第二模块基于所述所需变速器状态产生变速器控制信号；以及在所述第二模块接收至少一个变速器参数信号。在所述第二模块基于所述至少一个变速器参数信号确定实际变速器状态。在所述第一模块基于所述所需变速器状态和所述实际变速器状态确定所述混合动力变速器控制系统内是否存在故障。

Description

用于混合动力车辆的主控离合器诊断
技术领域
本公开涉及变速器状态控制，尤其涉及用于混合动力变速器的主控离合器诊断。
背景技术
这部分的内容仅仅提供与本公开相关的背景信息，而不构成现有技术。
通常，车辆包括调节车辆总体运行的多个系统。例如，车辆包括产生驱动扭矩的动力装置(例如，内燃机和/或电机)、提供电能的能量存储装置(例如，电池组)、将驱动扭矩分配到驱动轮的变速器和各种其它系统。
各系统包括彼此通信的相应控制模块，以调节车辆的运行。例如，使用混合动力控制模块和变速器控制模块调节混合动力变速器(即，包括至少一个用来提供驱动扭矩和再生制动的电机的变速器)的操作。各控制模块可恰当地用于确保混合动力变速器的正常运行是非常重要的。
可通过具有使用原由和解答(seed and key)计算安全关键变量的辅助路线来使控制模块免于故障(例如，软件故障、RAM和/或ROM故障、和/或运算与逻辑单元(ALC)故障)，或者可实现在分离的控制模块中的备用路线。这些安全方法必须针对确认为安全关键特征的特定特征进行特殊设计。另外，这些安全方法增加了复杂性，从而增加了各控制模块的成本。
发明内容
因此，本公开提供了一种调节车辆内混合动力变速器的操作的方法。该方法包括：使用第一模块确定所需变速器状态；使用第二模块基于所述所需变速器状态产生变速器控制信号；以及在所述第二模块接收至少一个变速器参数信号。在所述第二模块基于所述至少一个变速器参数信号确定实际变速器状态。在所述第一模块基于所述所需变速器状态和所述实际变速器状态确定所述混合动力变速器控制系统内是否存在故障。
在另一方面，所述所需变速器状态基于多个运行参数确定。
在另一方面，所述方法还包括当所述所需变速器状态不等于所述实际变速器状态时，发出故障信号。
在另一方面，所述方法还包括当发出所述故障信号时，起动修正动作。
在另一方面，所述方法还包括当发出所述故障信号时，起动补救动作。
在再一方面，所述至少一个变速器参数信号对应于混合动力变速器的电磁阀和双位开关中的一个的参数。所述参数包括位置和/或压力。
根据下文中所提供的详细描述，本发明应用性的其它方面也是显而易见的。应当理解，该详细描述和具体实例仅仅是示意性目的，而不是限制本公开的范围。
附图说明
这里所示的附图仅仅是示意性目的，而不是以任何方式限制本公开的范围。
图1为典型混合动力车辆系统的功能框图；
图2为根据本公开的调节混合动力车辆系统的运行的典型模块的功能框图；以及
图3为示出由本公开的混合动力车辆控制执行的典型步骤的流程图。
具体实施方式
实质上，下列描述仅仅是示意性的，而绝不是限制本发明及其应用或使用。为简便起见，附图中使用相同的附图标记来表示相似的元件。如本文所使用的，术语模块指的是专用集成电路(ASIC)、电子电路、执行一种或多种软件或固件程序的处理器(共享、专用或群组的)和存储器、组合逻辑电路或提供所述功能的其它合适部件。
现在参考图1，示出了包括典型混合动力变速器12的典型车辆系统10。于2005年10月11日授权公告、题为Two-Mode Compound-Split HybridElectro-Mechanical Transmission Having Four Fixed Ratios的共同转让美国专利No.6,953,409中进一步详细描述了混合动力变速器12，其内容通过参考并入本文。尽管本公开的混合动力车辆控制是参考混合动力变速器12描述，但是应当理解，该混合动力车辆控制还可与其它变速器系统一起实现。
车辆系统10还包括通过主离合器16有选择地驱动混合动力变速器12的发动机14。典型的混合动力变速器12为双模式复合分配电机式变速器，包括输入轴18和输出轴20。混合动力变速器12还包括第一、第二和第三行星齿轮组22、24、26，第一和第二电机28、30，以及第一、第二、第三和第四离合器C1、C2、C3、C4。行星齿轮组22、24、26各自包括中心齿轮22SG、24SG、26SG，行星齿轮22PG、24PG、26PG，行星架22PC、24PC、26PC和齿圈22RG、24RG、26RG。如US 6,953,409中进一步详细描述的，行星齿轮组22、24、26的行星齿轮22SG、24SG、26SG，行星架22PC、24PC、26PC和齿圈22RG、24RG、26RG联接成提供四个固定传动比。控制系统40基于本公开的混合动力车辆控制来调节发动机14和混合动力变速器12的运行。
第一和第二电机28、30每个都可操作于发电机模式和电动机模式。在发电机模式中，电机28、30吸收转动能量，该转动能量可转换成存储在能量存储装置(例如，电池和/或超级电容)中的电能。在电动机模式中，电机28、30驱动混合动力变速器12的一个或多个组件。更具体地，第一电机28与第一行星齿轮组22的中心齿轮22SG和第二行星齿轮组的齿圈机械地联接。第二电机30与第二行星齿轮组24的中心齿轮24SG和第三行星齿轮组26的中心齿轮26SG直接机械地联接。
第一、第二、第三和第四离合器C1、C2、C3、C4被执行以建立各种传动比。第一离合器C1用作制动器，并可有选择地接合，以制动第三行星齿轮组26的齿图26RG的旋转。第二离合器C2可有选择地接合，以将第一和第二行星齿轮组22、24的行星架22PC、24PC与第三行星齿轮组26的行星架26PC和输出轴20固定在一起。第三离合器C 3用作制动器，其可有选择地接合，以制动第二和第三行星齿轮组24、26的中心齿轮24SG、26SG，从而依据第四离合器C4是否接合来制动第二电机30的旋转和/或制动第二行星齿轮组24的行星架24PC的旋转。第四离合器C4可有选择地接合，以将第二行星齿轮组24的行星架24PC与第二和第三行星齿轮组24、26的中心齿轮24SG、26SG以及第二电机30接合。
混合动力变速器12可操作，以提供第一和第二模式(模式1，模式2)以及第一、第二、第三和第四固定传动比(1st、2nd、3rd、4th)。更具体地，离合器C1、C2、C3、C4和电机28、30被执行以根据下面的表格建立所述模式与传动比(档位)之一：
  模式/传动比   1stEM   2ndEM   C1   C2   C3   C4
  模式1   G   M   X
  1st   X   X
  2nd   X   X
  模式2   M   M   X
  3rd   X   X
  4th   X   X
其中G表示操作于发电机模式，M表示操作于电动机模式，X表示离合器接合。
第一、第二、第三和第四离合器C1、C2、C3、C4的接合由向各离合器16、C1、C2、C3、C4分配增压流体的液压系统42控制。液压系统42包括多个双位开关(未示出)和多个电磁阀44，每个双位开关和电磁阀44都调节流向各离合器的液压流体。各电磁阀44可在全开位置与全闭位置之间操作，以调节流向各离合器的液压流体流。在全闭位置，不向各自的离合器提供液压流体。因此，电磁阀44下游的流体压力将达到最小。在全开位置，向各自的离合器提供最大量的液压流体，电磁阀44下游的流体压力将达到最大。
控制系统40产生表示要致动的电磁阀44和/或通断阀并且传送至液压系统42的控制信号。各电磁阀都联接有传感器46，其向控制系统提供反馈信号。尽管只示出了单个传感器46，但是应当理解，存在至少一个传感器46与各电磁阀46相联。传感器46包括螺母管位置传感器和/或管路压力传感器之一。当为电磁阀位置传感器时，传感器46向控制系统40提供表示电磁阀44的致动位置的反馈信号。当为管路压力传感器时，传感器46向控制系统40提供表示电磁阀44下游的管路压力(即，作用在各自离合器上的流体压力)的信号。
现在参考图2，控制系统40包括用作混合动力控制模块(HCM)的第一模块50和用作变速器控制模块(TCM)的第二模块52。第一与第二模块50、52通过控制器局域网络(CAN)总线通信。第一模块50接收输入信号，包括但不限于，加速踏板位置信号、制动踏板位置信号、驱动范围信号(例如，P、R、N、D、L)和表示发动机运行参数的信号。第一模块50基于输入信号确定所需的变速器状态(TSDES)。
TSDES和相应的时间戳记保存进第一模块50的存储器，并且通过CAN总线发送到第二模块52，其确定用于致动电磁阀以获得TSDES的控制信号。例如，如果TSDES为3rd档位，那么第二模块52产生致动对应于C2和C4的电磁阀44的控制信号。在致动了电磁阀44之后，第二模块52接收来自传感器46的反馈信号。第二模块52基于反馈信号确定实际变速器状态(TSACT)。更具体地，每个传感器46都向第二模块52提供表示电磁阀位置和管路压力之一的反馈信号。各电磁阀位置或管路压力信号表示各自的离合器是否接合。这样，第二模块52可确定哪个离合器被接合，并基于此确定TSACT。
TSACT与相应的时间戳记发送至第一模块50，第一模块50比较TSDES与TSACT。更具体地，第一模块50基于时间戳记从存储器检索出TSDES。这样，TSACT与适当的TSDES相比较。如果TSDES与TSACT相等，那么认为第一和第二模块50、52操作恰当。如果TSDES与TSACT不相等，那么发出表示第一和第二模块50、52中至少一个具有问题的故障信号。
该故障可由多个故障模式之一产生。故障模式包括，但不限于，堵塞的CAN消息、破坏的TSDES(即，第一模块(HCM)有故障)和/或破坏的TSACT(即，第二模块(TCM)有故障)。虽然故障也可是因为电磁阀和/或通断阀开关组件故障，但例如使用并行诊断程序(例如，层1安全(layer 1 security))诊断这种组件故障。
可进行多个修正动作，每个修正动作对应于特定的故障模式。典型的修正动作包括，但不限于，在堵塞CAN消息和破坏的所需的信息情况下，使用最后知道的良好数值或者临时强制空档或恒定档位，和/或在所谓“极坏”控制模块情况下，重置控制模块。如果修正动作并未解决其故障，那么可执行补救动作。补救动作可包括，但不限于，限制车辆的驾驶性能。例如，可将混合动力变速器12的操作限定为第一和第二模式中的一个。
现在参考图3，对由本公开的混合动力车辆控制执行的典型步骤进行详细描述。在步骤300中，控制在第一模块50中确定TSDES。在步骤302中，控制通过CAN总线将TSDES发送至第二模块52。在步骤304中，控制基于由第二模块52在TSDES基础上产生的控制信号控制混合动力变速器12。在步骤306中，控制在第二模块52监测变速器参数。在步骤308中，控制基于变速器参数估计第二模块52内的TSACT。在步骤310中，通过CAN总线将TSACT发送到第一模块50。
在步骤312中，控制确定TSACT是否等于TSDES。如果TSACT等于TSDES，那么控制结束。如果TSACT不等于TSDES，那么控制在步骤314中起动修正动作。在步骤316中，控制确定是否解决该故障。如果故障解决，那么控制结束。如果故障未解决，那么控制在步骤318中设定故障代码，起动补救动作，控制结束。
本公开提供了一种在任何控制模块都无需具有原由和解答的并行路线，并且无需在单独控制模块中的备用路线就可确保对应于所需变速器状态的安全变速器指令的系统和方法。这样，无需复杂和昂贵的控制模块就提供了安全变速器状态。消除了原由解答和并行路线导致了对ROM、RAM等形式的存储源的更少使用。
现在，本领域的技术人员从前面的描述应当理解，本发明广泛的教导可以多种形式执行。因此，尽管根据其特定实施例描述了本发明，但是由于通过对附图、说明书和所附权利要求的研究，其它修改对于技术人员也是显而易见的，所以本发明的实际范围不应当这样限制。

Claims (24)

1.一种混合动力变速器控制系统，包括：
确定所需变速器状态的第一模块；
基于所述所需变速器状态产生变速器控制信号的第二模块，该第二模块接收至少一个变速器参数信号，并基于所述至少一个变速器参数信号确定实际变速器状态；并且
其中所述第一模块基于所述所需变速器状态和所述实际变速器状态确定所述混合动力变速器控制系统内是否存在故障。
2.如权利要求1所述的混合动力变速器控制系统，其中所述所需变速器状态基于多个运行参数确定。
3.如权利要求1所述的混合动力变速器控制系统，其中当所述所需变速器状态不等于所述实际变速器状态时，所述第一模块发出故障信号。
4.如权利要求1所述的混合动力变速器控制系统，其中当发出所述故障信号时，所述第一模块起动修正动作。
5.如权利要求1所述的混合动力变速器控制系统，其中当发出所述故障信号时，所述第一模块起动补救动作。
6.如权利要求1所述的混合动力变速器控制系统，其中所述至少一个变速器参数信号对应于混合动力变速器的电磁阀和双位开关中的一个的参数。
7.如权利要求6所述的混合动力变速器控制系统，其中所述参数包括位置。
8.如权利要求6所述的混合动力变速器控制系统，其中所述参数包括压力。
9.一种调节车辆内混合动力变速器的操作的方法，包括：
使用第一模块确定所需变速器状态；
使用第二模块基于所述所需变速器状态产生变速器控制信号；
在所述第二模块接收至少一个变速器参数信号；
在所述第二模块基于所述至少一个变速器参数信号确定实际变速器状态；以及
在所述第一模块基于所述所需变速器状态和所述实际变速器状态确定所述混合动力变速器控制系统内是否存在故障。
10.如权利要求9所述的方法，其中所述所需变速器状态基于多个运行参数确定。
11.如权利要求9所述的方法，还包括当所述所需变速器状态不等于所述实际变速器状态时，发出故障信号。
12.如权利要求9所述的方法，还包括当发出所述故障信号时，起动修正动作。
13.如权利要求9所述的方法，还包括当发出所述故障信号时，起动补救动作。
14.如权利要求9所述的方法，其中所述至少一个变速器参数信号对应于混合动力变速器的电磁阀和双位开关中的一个的参数。
15.如权利要求14所述的方法，其中所述参数包括位置。
16.如权利要求14所述的方法，其中所述参数包括压力。
17.一种诊断混合动力变速器的控制系统内故障的方法，包括：
使用第一模块确定所需变速器状态；
将所述所需变速器状态和相应的时间戳记存储在所述第一模块内；
使用第二模块基于所述所需变速器状态产生变速器控制信号；
在所述第二模块接收至少一个变速器参数信号，其中所述变速器参数信号对应于与所述变速器控制信号相关的变速器状态；
在所述第二模块基于所述至少一个变速器参数信号确定实际变速器状态；
将所述实际变速器状态与所述时间戳记相关联；
基于所述时间戳记从存储器检索出所述所需变速器状态；以及
在所述第一模块基于所述所需变速器状态和所述实际变速器状态确定所述混合动力变速器控制系统内是否存在故障。
18.如权利要求17所述的方法，其中所述所需变速器状态基于多个运行参数确定。
19.如权利要求17所述的方法，还包括当所述所需变速器状态不等于所述实际变速器状态时，发出故障信号。
20.如权利要求17所述的方法，还包括当发出所述故障信号时，起动修正动作。
21.如权利要求17所述的方法，还包括当发出所述故障信号时，起动补救动作。
22.如权利要求17所述的方法，其中所述至少一个变速器参数信号对应于混合动力变速器的电磁阀和双位开关中的一个的参数。
23.如权利要求22所述的方法，其中所述参数包括位置。
24.如权利要求22所述的方法，其中所述参数包括压力。
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