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公开(公告)号：US20190291709A1
公开(公告)日：2019-09-26
申请号：US15926489
申请日：2018-03-20
Applicant: GM Global Technology Operations LLC
Inventor： Chia-Shang Liu , Robert L. Morris
Abstract: A powertrain system includes a transmission, torque generating device, load coupled to a drive axle, a final drive unit in meshed gear engagement with the output shaft and the drive axle, and a controller. A requested output torque is processed using an open-loop lash state model populated with a capped output torque request table and a lash closure rate estimate table respectively providing a capped torque value and an estimated lash closure rate. Output speed is determined using a plant model, the capped torque value, and the estimated lash closure rate. The powertrain is controlled during the transition using the output speed. A lash angle may be calculated from the closure rate using an integrator logic block. A calibrated lash offset profile may be determined using the lash angle, and a reference speed may be generated using the lash offset profile.
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公开(公告)号：US09238461B1
公开(公告)日：2016-01-19
申请号：US14454967
申请日：2014-08-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chia-Shang Liu , Shaochun Ye , Robert L. Morris
CPC classification number: B60W20/11 , B60L15/20 , B60L2260/24 , B60L2270/145 , B60W20/108 , Y02T10/645 , Y02T10/72 , Y02T10/7275 , Y10S903/902
Abstract: A method for managing output bump/clunk in a neutral state in a strong hybrid vehicle includes calculating a motor torque for an electric traction motor connected to a third node of a planetary gear set. The motor torque is calculated as a product of a predetermined inertia of the electric traction motor, the calculated acceleration of the engine, and a gear ratio of the planetary gear set. The calculated motor torque is commanded from the electric traction motor via a controller in a direction opposite the calculated acceleration of the output shaft, including transmitting a motor torque command to the electric traction motor for the duration of the neutral state. The vehicle includes the engine, a damper assembly, the transmission, and the controller.
Abstract translation: 用于在强混合动力车辆中管理空档状态下的输出凸块/挡块的方法包括计算连接到行星齿轮组的第三节点的电牵引电动机的电动机转矩。 电动机转矩被计算为电力牵引电动机的预定惯量，所计算的发动机加速度和行星齿轮组的齿轮比的乘积。 计算出的电动机转矩由电动牵引电动机通过控制器在与计算出的输出轴的加速度相反的方向上被指令，包括在中性状态持续时间内将电动机转矩指令传送到牵引电动机。 车辆包括发动机，阻尼器组件，变速器和控制器。
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公开(公告)号：US09950706B1
公开(公告)日：2018-04-24
申请号：US15671989
申请日：2017-08-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jie Yang , Robert L. Morris , Chia-Shang Liu , Yo Chan Son
CPC classification number: B60W20/15 , B60K6/26 , B60W2710/083 , B60Y2200/92 , B60Y2300/22 , Y10S903/906
Abstract: A driveline system includes a drive axle coupled to a load, an electric machine, and a control system. The electric machine is responsive to a commanded torque, has a rotor shaft coupled to the axle, and produces an output torque that rotates the axle and load to produce driveline oscillation at a high resonant frequency. The control system generates the commanded torque using a nested control loop architecture in which an outer control loop operates at a sampling rate that is below a critical rate necessary for controlling the resonant frequency, and an inner control loop operates at a sampling rate that is above the critical rate. The inner loop determines a modified torque command and acceleration value in response to a commanded torque from the outer loop. The electric machine is thereafter controlled via the commanded torque.
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公开(公告)号：US20160039406A1
公开(公告)日：2016-02-11
申请号：US14454967
申请日：2014-08-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chia-Shang Liu , Shaochun Ye , Robert L. Morris
CPC classification number: B60W20/11 , B60L15/20 , B60L2260/24 , B60L2270/145 , B60W20/108 , Y02T10/645 , Y02T10/72 , Y02T10/7275 , Y10S903/902
Abstract: A method for managing output bump/clunk in a neutral state in a strong hybrid vehicle includes calculating a motor torque for an electric traction motor connected to a third node of a planetary gear set. The motor torque is calculated as a product of a predetermined inertia of the electric traction motor, the calculated acceleration of the engine, and a gear ratio of the planetary gear set. The calculated motor torque is commanded from the electric traction motor via a controller in a direction opposite the calculated acceleration of the output shaft, including transmitting a motor torque command to the electric traction motor for the duration of the neutral state. The vehicle includes the engine, a damper assembly, the transmission, and the controller.
Abstract translation: 用于在强混合动力车辆中管理空档状态下的输出凸块/挡块的方法包括计算连接到行星齿轮组的第三节点的电牵引电动机的电动机转矩。 电动机转矩被计算为电力牵引电动机的预定惯量，所计算的发动机加速度和行星齿轮组的齿轮比的乘积。 计算出的电动机转矩由电动牵引电动机通过控制器在与计算出的输出轴的加速度相反的方向上被指令，包括在中性状态持续时间内将电动机转矩指令传送到牵引电动机。 车辆包括发动机，阻尼器组件，变速器和控制器。
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