公开(公告)号：US11424635B2

公开(公告)日：2022-08-23

申请号：US16859322

申请日：2020-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Meixian Wang ,  Yue-Yun Wang ,  Houchun Xia ,  Justin Bunnell ,  Charles W. Wampler

IPC: H02J7/00 ,  G01R31/389 ,  B60L15/20 ,  G01R31/396 ,  B60L58/12 ,  B60L53/62 ,  G01R31/3842

Abstract: A method for estimating a state of a battery pack using a controller having battery state estimator (BSE) logic includes receiving or delivering a constant baseline current via the battery pack. Current oscillations having time-variant frequency content are selectively injected into the baseline current via the controller in response to a predetermined condition. The baseline current and the current oscillations combine to form a final current. The method includes estimating a battery parameter via the BSE logic concurrently with the current oscillations to generate an estimated battery parameter, and estimating the present state of the battery pack via the controller using the estimated battery parameter. An electrical system includes a rotary electric machine that is electrically connected to and driven by the battery pack, and a controller configured to execute the method.

公开(公告)号：US09139194B2

公开(公告)日：2015-09-22

申请号：US13737336

申请日：2013-01-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Allen J Lehmen ,  Houchun Xia ,  R. Anthony Hansen

IPC: B60W20/00 ,  B60W10/00

CPC classification number: B60W20/00 ,  B60K6/48 ,  B60W10/00 ,  B60W30/20 ,  B60W2030/206 ,  B60W2050/0026 ,  Y02T10/6221 ,  Y10T477/23

Abstract: A method for controlling a hybrid powertrain includes monitoring input torque of an input member and may include determining an oscillation torque. The method monitors critical vehicle characteristics, including at least a transmission operating mode and an input speed, and operates the powertrain at the input torque. The method compares input torque to a minimum threshold or oscillation torque to a fatigue threshold and identifies a first critical event, which occurs when input torque exceeds the minimum threshold or oscillation torque exceeds the fatigue threshold. The method identifies a first peak with the on-board controller during the first critical event. Peak events occur when the monitored input torque or oscillation torque changes between positive and negative slope. The method identifies a first CVC set occurring with the first peak and may record the first CVC set and the first peak in a look-up table.

Abstract translation: 控制混合动力系的方法包括监测输入构件的输入扭矩，并且可以包括确定振荡扭矩。 该方法监测至少包括传动操作模式和输入速度的关键车辆特性，并以输入扭矩操作动力系。 该方法将输入转矩与最小阈值或振荡转矩相比较，将疲劳阈值进行比较，并识别当输入转矩超过最小阈值或振荡转矩超过疲劳阈值时发生的第一临界事件。 该方法在第一个关键事件期间用板载控制器识别第一个峰值。 当监控的输入转矩或振荡转矩在正斜率和负斜率之间变化时，会发生峰值事件。 该方法识别与第一峰发生的第一CVC集合，并且可以在查找表中记录第一CVC集合和第一峰值。

公开(公告)号：US20210336462A1

公开(公告)日：2021-10-28

申请号：US16859322

申请日：2020-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Meixian Wang ,  Yue-Yun Wang ,  Houchun Xia ,  Justin Bunnell ,  Charles W. Wampler

IPC: H02J7/00 ,  G01R31/389 ,  G01R31/3842 ,  G01R31/396 ,  B60L58/12 ,  B60L53/62 ,  B60L15/20

Abstract: A method for estimating a state of a battery pack using a controller having battery state estimator (BSE) logic includes receiving or delivering a constant baseline current via the battery pack. Current oscillations having time-variant frequency content are selectively injected into the baseline current via the controller in response to a predetermined condition. The baseline current and the current oscillations combine to form a final current. The method includes estimating a battery parameter via the BSE logic concurrently with the current oscillations to generate an estimated battery parameter, and estimating the present state of the battery pack via the controller using the estimated battery parameter. An electrical system includes a rotary electric machine that is electrically connected to and driven by the battery pack, and a controller configured to execute the method.

公开(公告)号：US20160102757A1

公开(公告)日：2016-04-14

申请号：US14512659

申请日：2014-10-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shaochun Ye ,  Robert L. Morris ,  Houchun Xia

IPC: F16H61/04 ,  F16H61/02 ,  F16H59/44

CPC classification number: B60W50/0098 ,  B60K6/445 ,  B60W10/06 ,  B60W10/08 ,  B60W20/17 ,  B60W2050/001 ,  F16H59/40 ,  F16H59/42 ,  F16H59/44 ,  F16H2057/0012 ,  Y02T10/6239 ,  Y02T10/6286

Abstract: A vehicle includes a torque device providing input torque, a transmission, an axle connected to drive wheels, a final drive unit, and a controller. The controller includes proportional-integral (PI) logic, and is programmed to determine a speed of the drive wheels and output shaft. The controller executes a method to calculate a reference output speed using the drive wheel speed and applies a calibrated offset profile to the calculated reference output speed during a lash state transition of the final drive unit, output shaft, and axle. This controls, via the PI logic, a speed difference between the output shaft and drive axle. The calibrated offset profile is higher in an early portion of the lash state to speed a transition from the lash state, and lower in a later portion of the lash state to reduce driveline clunk upon transition from the gear lash state.

Abstract translation: 车辆包括提供输入扭矩的扭矩装置，变速器，连接到驱动轮的轴，最终驱动单元和控制器。 控制器包括比例积分（PI）逻辑，并被编程以确定驱动轮和输出轴的速度。 控制器执行一种使用驱动轮速度计算参考输出速度的方法，并且在最终驱动单元，输出轴和轴的间隙状态转换期间，将校准的偏置轮廓应用于计算的参考输出速度。 这通过PI逻辑来控制输出轴和驱动轴之间的速度差。 校准的偏移轮廓在间隙状态的早期部分中较高，以加速从间隙状态的转变，并且在间隙状态的稍后部分中较低，以在从齿轮间隙状态转变时减少传动系共振。

公开(公告)号：US20140195080A1

公开(公告)日：2014-07-10

申请号：US13737336

申请日：2013-01-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Allen J. Lehmen ,  Houchun Xia ,  R. Anthony Hansen

IPC: B60W20/00

CPC classification number: B60W20/00 ,  B60K6/48 ,  B60W10/00 ,  B60W30/20 ,  B60W2030/206 ,  B60W2050/0026 ,  Y02T10/6221 ,  Y10T477/23

Abstract: A method for controlling a hybrid powertrain includes monitoring input torque of an input member and may include determining an oscillation torque. The method monitors critical vehicle characteristics, including at least a transmission operating mode and an input speed, and operates the powertrain at the input torque. The method compares input torque to a minimum threshold or oscillation torque to a fatigue threshold and identifies a first critical event, which occurs when input torque exceeds the minimum threshold or oscillation torque exceeds the fatigue threshold. The method identifies a first peak with the on-board controller during the first critical event. Peak events occur when the monitored input torque or oscillation torque changes between positive and negative slope. The method identifies a first CVC set occurring with the first peak and may record the first CVC set and the first peak in a look-up table.

Abstract translation: 控制混合动力系的方法包括监测输入构件的输入扭矩，并且可以包括确定振荡扭矩。 该方法监测至少包括传动操作模式和输入速度的关键车辆特性，并以输入扭矩操作动力系。 该方法将输入转矩与最小阈值或振荡转矩相比较，将疲劳阈值进行比较，并识别当输入转矩超过最小阈值或振荡转矩超过疲劳阈值时发生的第一临界事件。 该方法在第一个关键事件期间用板载控制器识别第一个峰值。 当监控的输入转矩或振荡转矩在正斜率和负斜率之间变化时，会发生峰值事件。 该方法识别与第一峰发生的第一CVC集合，并且可以在查找表中记录第一CVC集合和第一峰值。