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    • 4. 发明授权
    • Closed-loop clutch control using a filtered piston position signal
    • 使用过滤的活塞位置信号进行闭环离合器控制
    • US08606476B2
    • 2013-12-10
    • US13352701
    • 2012-01-18
    • Matthew D. WhittonRobert L. WilliamsSteven P. MoormanCheol W. Kim
    • Matthew D. WhittonRobert L. WilliamsSteven P. MoormanCheol W. Kim
    • F16D15/00
    • F16D48/066F16D2021/0669F16D2500/3026F16D2500/50287F16D2500/7041F16D2500/70626F16D2500/70631F16D2500/70668
    • A vehicle includes an engine, transmission, and controller. The transmission includes a clutch pack, a clutch piston, and a position sensor. The sensor measures a changing magnetic field with respect to the piston, and encodes the measured magnetic field as a raw position signal. The controller receives the raw position signal and processes the raw position signal through a signal processing module to generate a filtered signal attenuating signal noise in the position signal. The controller determines a commanded position of the piston, and calculates separate proportional (P), derivative (D), and integral (I) control terms using the commanded position and filtered position signal. The controller also calculates a feed-forward control term using the commanded position, and a required flow rate for actuating the clutch pack as a function of the PID terms and the feed-forward commanded position term. The controller actuates the clutch pack using the commanded flow rate.
    • 车辆包括发动机,变速器和控制器。 变速器包括离合器组件,离合器活塞和位置传感器。 传感器测量相对于活塞的变化的磁场,并且将测量的磁场编码为原始位置信号。 控制器接收原始位置信号,并通过信号处理模块对原始位置信号进行处理,以产生在位置信号中衰减信号噪声​​的滤波信号。 控制器确定活塞的指令位置,并使用指令位置和滤波位置信号计算单独的比例(P),微分(D)和积分(I)控制项。 控制器还使用命令位置计算前馈控制项,以及根据PID项和前馈命令位置项来驱动离合器组的所需流量。 控制器使用指令的流量驱动离合器组件。
    • 7. 发明授权
    • Method of controlling a synchronizer actuator fork of a transmission
    • 控制变速器同步器执行机构叉的方法
    • US08850916B2
    • 2014-10-07
    • US13540661
    • 2012-07-03
    • Christopher Jay WeingartzMatthew D. WhittonSteven P. MoormanMatthew Kempeinen
    • Christopher Jay WeingartzMatthew D. WhittonSteven P. MoormanMatthew Kempeinen
    • F16H35/00
    • F16H61/30F16H61/2807F16H61/68F16H2061/0087F16H2061/2823
    • A method of adjusting a pressure signal to an actuator piston to control movement of a synchronizer actuator fork of a transmission includes moving the synchronizer actuator fork from a start position into a target position by applying an initial fluid pressure value. The time required to move the synchronizer actuator fork is measured to define a measured actuation time, and compared to a target actuation time. A correction factor is applied to the initial fluid pressure value to define a revised fluid pressure value when the measured actuation time is not within a pre-defined time range of the target actuation time. When the measured actuation time is greater than the pre-defined time range of the target actuation time, the initial fluid pressure value is increased. When the measured actuation time is less than the pre-defined time range of the target actuation time, the initial fluid pressure value is decreased.
    • 调节致动器活塞的压力信号以控制变速器的同步器执行器叉的运动的方法包括通过施加初始流体压力值将同步器致动器叉从起始位置移动到目标位置。 测量移动同步器执行器叉所需的时间以定义测量的致动时间,并与目标致动时间进行比较。 当测量的致动时间不在目标致动时间的预定义时间范围内时,校正因子被应用于初始流体压力值以限定修正的流体压力值。 当测量的致动时间大于目标致动时间的预定时间范围时,初始流体压力值增加。 当测量的致动时间小于目标致动时间的预定时间范围时,初始流体压力值减小。