CN1678849A - 在无级变速器中进行滑动调节的方法及装置 - Google Patents

在无级变速器中进行滑动调节的方法及装置 Download PDF

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Publication number
CN1678849A
CN1678849A CNA038210088A CN03821008A CN1678849A CN 1678849 A CN1678849 A CN 1678849A CN A038210088 A CNA038210088 A CN A038210088A CN 03821008 A CN03821008 A CN 03821008A CN 1678849 A CN1678849 A CN 1678849A
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China
Prior art keywords
awl dish
zeta
force
contact device
rate example
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Granted
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CNA038210088A
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CN100485228C (zh
Inventor
米夏埃尔·罗伊舍尔
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LuK Lamellen und Kupplungsbau GmbH
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LuK Lamellen und Kupplungsbau GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • B60K31/02—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically
    • B60K31/04—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
    • B60K31/042—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
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    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
    • B60W30/1884—Avoiding stall or overspeed of the engine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/038—Limiting the input power, torque or speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established
    • 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
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • F16H61/66—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 specially adapted for continuously variable gearings
    • F16H61/662—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 specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66272—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 specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2260/00—Interaction of vehicle brake system with other systems
    • B60T2260/08—Coordination of integrated systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
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    • 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
    • F16H61/0021—Generation or control of line pressure
    • Y—GENERAL 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
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Abstract

本发明涉及在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的方法及装置。在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的方法在于，在该缠绕接触装置变速器中一个驱动锥盘对与一个被驱动的锥盘对通过一个缠绕接触装置彼此相耦合以传递转矩，其中一个无级变速器的该驱动锥盘对与该被驱动锥盘对之间的力比例(Zeta)依赖于一个安全度值被学习得到。

Description

在无级变速器中进行滑动调节的方法及装置
本发明涉及用于在无级变速器中、尤其是在一种缠绕接触装置变速器(Umschlingungsgetriebe)中进行滑动调节的方法及装置，在该缠绕接触装置变速器中，驱动的锥盘对与被驱动的锥盘对通过一个缠绕接触装置彼此相耦合以传递转矩。
在机动车技术中已公知了无级变速器，例如缠绕接触装置变速器，它通常具有一个驱动的锥盘对及一个被驱动的锥盘对，它们通过缠绕接触装置彼此相耦合以传递转矩。在这些锥盘对上的压紧力可自由控制的情况下，当力的比例与安全度或安全系数关系的准确曲线已知时，对于缠绕接触装置变速器中的变速比调节是有助的。在一定的行驶状态中，例如当车轮侧碰撞或类似情况下，则需要提高安全系数。这在公知的缠绕接触装置变速器上变速比调节时不能被考虑，由此力比例的改变对无级变速器的变速比的影响不能被减小或消除。因此可对机动车中的舒适性带来不利影响。
本发明的任务在于提出一种方法及装置，以便在无级变速器中进一步优化变速比的调节。
该任务在方法方面将通过一种在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的方法来解决，在该缠绕接触装置变速器中一个驱动锥盘对与一个被驱动的锥盘对通过缠绕接触装置彼此相耦合以传递转矩，其中一个无级变速器的该驱动锥盘对与被驱动锥盘对之间的力比例(Zeta)依赖于安全度被学习得到(einlernen)。以此方式可依赖机动车中的安全标准(安全度)来实现一个无级变速器的所述驱动锥盘对与被驱动锥盘对之间的力比例的适配。由此可显著改善尤其是无级变速器中的变速比的调节。
在此情况下，将在一个当前工作点上在实际的压紧力与发生缠绕接触装置滑转时的力之间的力比例称为安全度。当例如该安全度取得值1.0时，则处于缠绕接触装置的打滑点上。
可以首先确定出打滑点。这例如可通过在压紧压力上及这些锥盘对的转速或类似量之间的互相关性上叠加一个交变量来实现。在根据本发明的方法中，当打滑点已知时在一个很高的压紧安全度上开始减小安全度。这可被进行至直到达到打滑点或直到打滑点的稍前时刻为止。最好该方案可通过例如被驱动锥盘对上的压紧力的减小来实现。在此情况下例如使变速比的调节保持有效及力比例或Zeta值的变化通过锥盘对压力的相应控制来平衡。
该驱动锥盘对与被驱动锥盘对之间的Zeta值或者说力比例可通过对转速、变速比及锥盘对压力或用于这些锥盘对的控制量的了解来确定或计算。相应的Zeta值可最好作为安全度的函数被储存。因此力比例可用有利的方式被预控制，以便总是在足够安全度的情况下实现最佳压紧力。
在本发明的一个进一步构型的范围内提出：该方法最好在具有恒定安全度的准静态工作状态下和/或在安全度被有意地缓慢下降的情况下被执行。这些工作状态通常最好存在于恒速行驶中的超速传动区域(OD)中。因为压紧力需要量与输入端转矩及由此与发动机转矩相关，该发动机转矩不能太高，以便可经过尽可能大的安全度区域。最好使用50与100Nm之间的一个区域。但也可以是其它的区域及工作状态。
按照另一构型，根据本发明的适配不必要连续地被执行。也可以是，分段地或以类似方式地操作。因此变速器中的一个变速比点可在时间上相继地用不同安全度来达到(angefahren)。在一些相应的工作状态求得的力比例(Zeta)的值可被存储在相应的存储表或类似物中和/或被使用在一个参数化的模型中。借助这种适配可使变速比调节个别地适配于相应的变速器。
在所提出的方法中也可考虑，Zeta值与安全度及变速比相关地被存放或储存用于适配。以此方式，可取代一个特性曲线而使一个特性曲线组被适配。
根据一个有利的进一步构型，也可对这些锥盘组中的压力进行适当的估价。对于Zeta值的计算需要知道所有力分量。除了弹簧力外还要考虑由静态及动态压力计算出的多个力。特别有利的是，这些压力是已知的。但在根据本发明的方法中不是绝对需要知道这些静态压力，因为分别采用这些液压阀的平均特性曲线的假设就足够了。因为这些液压阀的控制电流是已知的，可由该值计算出一个理论压力值。在近似的与实际的阀特性曲线之间的误差可被这样地补偿，即在锥盘对控制时最好使用这些近似的阀特性曲线。因此可用简单的方式补偿偏差。
在本发明的另一构型的范围中可考虑，在本发明的方法中最好在机动车的运行工作状态中计算Zeta的最大值。在此情况下对于被驱动的锥盘对上的固定压紧力可这样地提高输入端转矩，以致导致变速器的缠绕接触装置的滑转。
也可以是，将输入端的转矩保持恒定及在此情况下降低压紧力。在此情况下力比例(Zeta)首先上升及在缠绕接触装置滑转(打滑点)前再下降。打滑点到Zeta最大值的距离与变速比相关地约在10％-30％左右。该距离通常与压紧力无关。
事实表明，对于该变速器，位于Zeta最大值左边的区域中的工作是特别有利的。在该工作中可以是，在压紧力下降时记录或存储这些力比例的变化曲线。当确定出Zeta最大值向一个确定的压紧力移动了时，实际的压紧力需要量已改变。
用已知的Zeta最大值可对工作参数进行相应校正，以便保证在所需工作区域(Zeta最大值的左边)中实现压紧。
在根据本发明的方法中最好存储最大Zeta值例如在安全度和或变速比上的工作参数。
通过所提出的调节参数的校正尤其可显著改善具有无级变速器的机动车中的可行驶性及行驶舒适性。此外显著地减小了干扰对Zeta值的影响。此外借助根据本发明的方法实现了对实际压紧力需要量的监测。
此外作为本发明基础的任务将通过一种在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的装置来解决，在该变速器中一个驱动锥盘对与一个被驱动的锥盘对通过一个缠绕接触装置彼此相耦合以传递转矩，尤其用于实施本发明所提出的方法，其中设有一个用于依赖一个安全度值学习获得一个无级变速器的该驱动锥盘对与所述被驱动锥盘对之间的力比例(Zeta)的装置。
其它优点及有利构型可由从属权利要求及以下的附图说明中得到。
附图为：
图1：本发明的一个可能构型的流程图；及
图2：具有Zeta-Max测量表示的曲线图。
在这些锥盘对中压力的适当估价将借助图1中的流程图来表示。对于Zeta值的计算需要知道所有力分量。除弹簧力外还需考虑由静态及动态的压力所计算的一些力。
在所提出的估价中分别采用液压阀的平均特性曲线的一些假设。因为这些液压阀的控制电流是已知的，故可由该值来计算一个理论上的压力值。近似的与实际的阀特性曲线之间的误差将这样地被补偿，即在这些锥盘对控制时使用这些近似的阀特性曲线。
图2中表示Zeta(A)，被驱动的锥盘对上的压紧力(B)，输入端发动机转矩(C)及安全度(D)的曲线。在根据本发明的Zeta-Max值(Zeta最大值)的确定时可对于被驱动锥盘对上几乎恒定的压紧力这样地提高输入端转矩，以致它导致变速器的缠绕接触装置的滑转。在Zeta最大值后借助Zeta值的减小，打滑点变得明显。总体地得到：对于无级变速器，当使用处于Zeta最大值前面的一些值时可特别有利地工作。

Claims (17)

1.在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的方法，在该变速器中一个驱动锥盘对与一个被驱动的锥盘对通过一个缠绕接触装置彼此相耦合以传递转矩，其特征在于：一个无级变速器的该驱动锥盘对与该被驱动的锥盘对之间的力比例(Zeta)依赖于一个安全度值被学习得到。
2.根据权利要求1的方法，其特征在于：使用一个实际工作点上实际的压紧力与发生缠绕接触装置滑转时的力之间的力比例作为安全度值。
3.根据权利要求1或2的方法，其特征在于：在已知打滑点时，将在所述被驱动的锥盘对上的压紧力减小至直到达到缠绕接触装置上的打滑点的稍前为止。
4.根据权利要求3的方法，其特征在于：当压紧力减小时无级变速器中变速比的调节被保持有效及压紧力的变化通过至少一个锥盘对上的压力的相应控制来平衡。
5.根据以上权利要求中一项的方法，其特征在于：所述力比例作为安全度的函数被存储。
6.根据以上权利要求中一项的方法，其特征在于：在变速器的准静态工作状态时执行该方法。
7.根据权利要求6的方法，其特征在于：在恒速行驶时超速传动区域(OD)中的工作状态被用作准静态的工作状态。
8.根据以上权利要求中一项的方法，其特征在于：所述力比例(Zeta)分段地被适配。
9.根据以上权利要求中一项的方法，其特征在于：无级变速器的一个变速比在时间上相继地用不同力比例值来达到。
10.根据权利要求9的方法，其特征在于：将在相应的工作状态求得的力比例(Zeta)的值存储和/或使用在一个参数化的模型中。
11.根据以上权利要求中一项的方法，其特征在于：该力比例(Zeta)与无级变速器的安全度及变速比相关地被存储。
12.根据以上权利要求中一项的方法，其特征在于：估价所述两个锥盘对中的压力，其方式是由这些锥盘对的液压阀的已知控制电流来计算一个理论的压力值。
13.根据以上权利要求中一项的方法，其特征在于：在机动车的运行工作状态中计算力比例(Zeta)的一个最大值。
14.根据权利要求13的方法，其特征在于：在被驱动的锥盘对上有预给定的压紧力时这样提高输入端的发动机转矩，以致导致变速器的缠绕接触装置的滑转。
15.根据权利要求13的方法，其特征在于：将输入端的发动机转矩保持恒定及在此情况下降低所述压紧力。
16.根据权利要求13至15中一项的方法，其特征在于：用学得的Zeta-Max值来校正变速器的工作参数，以便保证最佳的压紧。
17.在无级变速器中、尤其是在一种缠绕接触装置变速器中进行滑动调节的装置，其中，一个驱动锥盘对与一个被驱动的锥盘对通过一个缠绕接触装置彼此相耦合以传递转矩，尤其用于实施根据权利要求1至16中一项的方法，其特征在于：设有一个用于依赖一个安全度值学习一个无级变速器的该驱动锥盘对与该被驱动锥盘对之间的力比例(Zeta)的装置。
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