公开(公告)号：US20180149266A1

公开(公告)日：2018-05-31

申请号：US15825194

申请日：2017-11-29

申请人： ZF Friedrichshafen AG

发明人： Tomas SZABO ,  Knut GRAICHEN ,  Sebastian HENTZELT

IPC分类号： F16H61/686 ,  F16H61/70

CPC分类号： F16H61/686 ,  F16H61/08 ,  F16H61/70 ,  F16H61/702 ,  F16H2061/0093 ,  F16H2061/085 ,  F16H2061/161 ,  F16H2300/02 ,  F16H2302/02 ,  F16H2306/30 ,  Y02T10/56

摘要： A transmission which includes input and output shafts and first and second step-down devices for producing various step-down ratios. The first and second step-down devices are associated with first and second controllable clutches, respectively, in order to connect, in a torque-transmitting manner, the respective step-down device between the input shaft and the output shaft. A first gear of the transmission is obtained by actuating the first clutch and a second gear by actuating the second clutch. A method of controlling a gearshift, from the first gear to the second gear, includes the steps of determining operating condition parameters of the transmission; and determining optimized degrees of actuation of the clutches by a search process related to a transmission model that determines the degrees of actuation on the basis of operating condition parameters in relation to a predetermined optimization criterion. The transmission model is based on slip.

公开(公告)号：US20170030460A1

公开(公告)日：2017-02-02

申请号：US15223000

申请日：2016-07-29

申请人： ZF Friedrichshafen AG

发明人： Tomas SZABO

IPC分类号： F16H61/04

CPC分类号： F16H61/0403 ,  F16H59/38 ,  F16H2061/0087

摘要： A method of optimizing shifting of a shifting element which fixes a shaft to another component of the drive-train. Three shifting processes are influenced by respective characteristic forms of a control parameter. The first and second characteristic forms are different from one another. Each shifting process has a distinct start and end time (tBeginn, tEnde). The rotational speed of the shaft is a function n(t) of time t. An idealized rotational speed nideal(t):=G{n(t)} is determined by a filter G. First and second evaluation indexes I:=I(t−Δt,t)/I (tBeginn−t, tBeginn) are calculated, in which tBeginn

摘要翻译： 一种优化将轴固定到传动系的另一部件的换档元件的移动的方法。 三个移动过程受控制参数的各个特征形式的影响。 第一和第二特征形式彼此不同。 每个移动过程都有一个明显的开始和结束时间（tBeginn，tEnde）。 轴的转速是时间t的函数n（t）。 理想化转速n（t）：= G {n（t）}由滤波器G确定。第一和第二评估指标I：= I（t-Δt，t）/ I（tBeginn-t，tBeginn） 计算，其中tBeginn