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    • 2. 发明申请
    • Mode selection and switching logic in a closed-loop pulse width modulation valve-based transmission control system
    • 模式选择和开关逻辑在闭环脉宽调制阀传动控制系统中
    • US20080082242A1
    • 2008-04-03
    • US11542368
    • 2006-10-03
    • Mark L. Dell'EvaAnanthakrishnan SurianarayananDavid E. Herbert
    • Mark L. Dell'EvaAnanthakrishnan SurianarayananDavid E. Herbert
    • G06F19/00
    • G05D16/2013F16H61/0251F16H2061/0255F16H2342/10Y10T477/60
    • A pulse width modulated (PWM) valve-based hydraulic control system is disclosed. In one embodiment, a feedback control system includes a controller that receives a pressure command signal and a pressure feedback signal. The controller generates a duty cycle control signal that controls a PWM valve. The PWM valve provides a control pressure Pc to control a load, such as an actuator of an automatic transmission system. A pressure sensor measures the control pressure Pc and provides the pressure feedback signal. In another embodiment, a compensator provides compensation for linear and nonlinear effects in the pressure feedback signal, based at least in part, on other inputs, such as fluid temperature. In other embodiments, a plurality of controllers are provided, and a controller is selected by a switching logic processor, or by phase-in and phase-out filters, based on the pressure feedback signal and other inputs. A re-calibration process for the Pc versus duty cycle response of the PWM valve is also disclosed. The re-calibration method updates the feedback control system processes to maintain performance despite variations due to wear, temperature, and other factors.
    • 公开了一种基于脉宽调制(PWM)阀的液压控制系统。 在一个实施例中,反馈控制系统包括接收压力指令信号和压力反馈信号的控制器。 控制器产生控制PWM阀的占空比控制信号。 PWM阀提供控制压力Pc以控制负载,例如自动变速系统的致动器。 压力传感器测量控制压力Pc并提供压力反馈信号。 在另一个实施例中,补偿器至少部分地基于诸如流体温度的其它输入来对压力反馈信号中的线性和非线性效应提供补偿。 在其他实施例中,提供多个控制器,并且基于压力反馈信号和其他输入,由开关逻辑处理器或通过相入和过滤滤波器选择控制器。 还公开了用于PWM阀的Pc对占空比响应的重新校准过程。 尽管由于磨损,温度和其他因素的变化,重新校准方法更新了反馈控制系统过程以保持性能。
    • 6. 发明授权
    • Laser profiler for high precision surface dimensional grouping apparatus
and method
    • 激光分析仪用于高精度表面尺寸分组设备和方法
    • US4946281A
    • 1990-08-07
    • US342276
    • 1989-04-24
    • Mark L. Dell'EvaChieh-Yi J. YenJacob George
    • Mark L. Dell'EvaChieh-Yi J. YenJacob George
    • G01B11/25
    • G01B11/25
    • A laser optical profiler for determining the shape of a workpiece, the profiler in combination comprising means for projecting a laser probe line at a first fixed focal length on said workpiece at a first angle, means for providing relative movement between said probe line and said workpiece, imaging lens means for focusing on said workpiece at an angle nonspecular with respect to first angle at a second fixed focal length a receiver path to provide an image reflected off said workpiece, the reflected receiver path forming a line essentially coterminous with said probe line, the receiver path having a predetermined transverse width with alpha and beta portions, means to move said receiver path along with said probe line, a beam splitter means for dividing said receiver path into first and second portions, a first linear array of individual detectors associated with said first portion of said receiver path for detecting said alpha portion of said width of said receiver path and generating a signal in response thereto, a second linear array of individual detectors associated with said second part of said receiver path for detecting said beta portion of said width of said receiver path image and generating a signal in response thereto, and means for comparing said response of said first linear array with said response of said second linear array to determine the acceptability of said responses and means for detecting the linear location of the focal point of said probe line with respect to said workpiece whereby the profile of said workpiece is determined.
    • 一种用于确定工件形状的激光光学剖面仪,所述轮廓仪组合包括用于以第一角度在所述工件上以第一固定焦距投射激光探针线的装置,用于在所述探针线和所述工件之间提供相对运动的装置 成像透镜装置,用于以相对于第二固定焦距处的第一角度非特异性的角度聚焦在所述工件上,以提供从所述工件反射的图像的接收器路径,所述反射的接收器路径形成与所述探针线基本上相邻的线, 具有α和β部分的预定横向宽度的接收机路径意味着与所述探测线一起移动所述接收机路径,用于将所述接收机路径分成第一和第二部分的分束器装置,与 所述接收器路径的所述第一部分用于检测所述接收器路径的所述宽度的所述α部分并且产生 响应于此的信号,与所述接收器路径的所述第二部分相关联的单独检测器的第二线性阵列,用于检测所述接收器路径图像的所述宽度的所述β部分并响应于此产生信号,以及用于比较所述响应 所述第一线性阵列具有所述第二线性阵列的所述响应以确定所述响应的可接受性,以及用于检测所述探针线相对于所述工件的焦点的线性位置的装置,由此确定所述工件的轮廓。
    • 8. 发明授权
    • Fluid level detection system
    • 液位检测系统
    • US08199021B2
    • 2012-06-12
    • US12506653
    • 2009-07-21
    • Robert D. KellerWilliam G. Spurrier, IIIGerrit V. BenekerJeffrey B. SmithMark L. Dell'Eva
    • Robert D. KellerWilliam G. Spurrier, IIIGerrit V. BenekerJeffrey B. SmithMark L. Dell'Eva
    • G08B21/00
    • G01K1/14G01F23/22G01N2011/0066
    • A fluid level detection system includes a fluid reservoir defining a cavity for holding fluid therein. A fluid level sensor is mounted to the fluid reservoir. The solenoid body defines a first opening establishing fluid communication between an armature chamber and a cavity defined by the reservoir. Travel time of an armature within the armature chamber is thereby affected by fluid level in the reservoir. A controller is operatively connected to the sensor and is operable to receive a sensor signal indicative of travel time from the sensor and formulate a control signal corresponding thereto. A power source is operatively connected to the controller for energizing the coil and the controller. In some embodiments, multiple fluid containing components are connected with one or more controllers. An engine, a transmission, and rear axle differentials on a vehicle may be equipped with sensors to provide fluid level, temperature and viscosity information.
    • 液位检测系统包括限定用于在其中保持流体的空腔的流体储存器。 液位传感器安装到流体储存器。 螺线管主体限定第一开口,其建立衔铁室和由储存器限定的空腔之间的流体连通。 电枢室内电枢的行进时间因此受到储层中液位的影响。 控制器可操作地连接到传感器,并且可操作地接收指示来自传感器的行进时间的传感器信号,并且形成对应于其的控制信号。 电源可操作地连接到控制器以对线圈和控制器通电。 在一些实施例中,包含多个流体的部件与一个或多个控制器连接。 车辆上的发动机,变速器和后桥差速器可以配备有传感器,以提供液位,温度和粘度信息。
    • 10. 发明申请
    • FLUID LEVEL DETECTION SYSTEM
    • 流体液位检测系统
    • US20110018723A1
    • 2011-01-27
    • US12506653
    • 2009-07-21
    • Robert D. KellerWilliam G. Spurrier, IIIGerrit V. BenekerJeffrey B. SmithMark L. Dell'Eva
    • Robert D. KellerWilliam G. Spurrier, IIIGerrit V. BenekerJeffrey B. SmithMark L. Dell'Eva
    • G08B21/00
    • G01K1/14G01F23/22G01N2011/0066
    • A fluid level detection system includes a fluid reservoir defining a cavity for holding fluid therein. A fluid level sensor is mounted to the fluid reservoir. The solenoid body defines a first opening establishing fluid communication between an armature chamber and a cavity defined by the reservoir. Travel time of an armature within the armature chamber is thereby affected by fluid level in the reservoir. A controller is operatively connected to the sensor and is operable to receive a sensor signal indicative of travel time from the sensor and formulate a control signal corresponding thereto. A power source is operatively connected to the controller for energizing the coil and the controller. In some embodiments, multiple fluid containing components are connected with one or more controllers. An engine, a transmission, and rear axle differentials on a vehicle may be equipped with sensors to provide fluid level, temperature and viscosity information.
    • 液位检测系统包括限定用于在其中保持流体的空腔的流体储存器。 液位传感器安装到流体储存器。 螺线管主体限定第一开口,其建立衔铁室和由储存器限定的空腔之间的流体连通。 电枢室内电枢的行进时间因此受到储层中液位的影响。 控制器可操作地连接到传感器,并且可操作地接收指示来自传感器的行进时间的传感器信号,并且形成对应于其的控制信号。 电源可操作地连接到控制器以对线圈和控制器通电。 在一些实施例中,包含多个流体的部件与一个或多个控制器连接。 车辆上的发动机,变速器和后桥差速器可以配备有传感器,以提供液位,温度和粘度信息。