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    • 4. 发明授权
    • Blading system and method for controlling structural vibrations
    • 用于控制结构振动的叶片系统和方法
    • US6102664A
    • 2000-08-15
    • US572395
    • 1995-12-14
    • Nhan Nguyen
    • Nhan Nguyen
    • F01D5/26F01D5/30F04D29/66F04D29/34
    • F01D5/3007F01D5/26F01D5/3092F04D29/668Y02T50/672Y02T50/673Y10S416/50
    • A new blading system for controlling the structural vibrations in axial-flow compressors, turbines, or fans, as in aircraft engines and like turbomachines including a stator disc and a rotor disc is presented. The rotor disc defines several radial hubs that retain the rotor blading systems. Each blading system includes a blade formed of an airfoil, and a root attachment which is dimensioned to fit within, and to engage a corresponding hub. Viscoelastic dampers are selectively applied to the outer surfaces of the root attachment on which compressive or shear forces are likely to develop, intermediate the root attachment and the hub, for compression therebetween upon rotation of the rotor disc, in order to dampen structural vibrations. One advantage presented by the viscoelastic dampers lies in its simplicity, efficiency, cost effectiveness, and its ability to be retrofitted into existing turbomachines with minor surface treatment of the root attachments. Furthermore, since the dampers are not exposed to the inflowing airstream, they do not affect the aerodynamic performance of the turbomachine. Another feature of the damping system is that it provides a significant source of damping to minimize destructive structural vibrations, thereby increasing the durability of the turbomachine, and reducing acoustic noise accompanying high amplitude vibrations.
    • 提出了一种用于控制轴流式压缩机,涡轮机或风扇中的结构振动的新的叶片系统,如在飞机发动机中,如涡轮机,包括定子盘和转子盘。 转子盘限定了几个保持转子叶片系统的径向毂。 每个叶片系统包括由翼型件形成的叶片和根部附件,根部附件的尺寸适于装配在相应的轮毂内并与其相啮合。 为了抑制结构振动,粘弹性阻尼器被选择性地施加到根部附件的外表面上,在该附件的外表面上可能产生压缩或剪切力,在根部附件和轮毂之间,在转子盘旋转之间,可以在根部附件和轮毂之间进行压缩。 粘弹性阻尼器提出的一个优点在于其简单性,效率,成本效益以及将其加工成现有涡轮机的能力,对根部附件进行了轻微的表面处理。 此外,由于阻尼器不暴露于流入的气流,它们不影响涡轮机的空气动力性能。 阻尼系统的另一个特征在于,它提供了一个重要的阻尼源,以减少破坏性结构振动,从而提高涡轮机的耐久性,并降低伴随高振幅振动的声学噪声。
    • 7. 发明授权
    • Closed-loop phosphatizing system and method
    • 闭环磷酸化系统及方法
    • US06235111B1
    • 2001-05-22
    • US09200221
    • 1998-11-25
    • Scott A. ComisoVincent J. FerrariNeil J. BailerMichael D. DamronNhan Nguyen Thanh Lam
    • Scott A. ComisoVincent J. FerrariNeil J. BailerMichael D. DamronNhan Nguyen Thanh Lam
    • B05B700
    • C23C22/76C23C22/00C23C22/73
    • A phosphatizing system for phosphatizing an object including a closed-loop phosphatizing assembly is provided configured to pass a phosphatizing reagent solution over an object during a phosphatizing procedure. The phosphatizing assembly includes a collection compartment in fluid communication with a run-off portion of a subfloor assembly supporting the object for receipt of substantially all the reagent run-off fluids from the subfloor assembly. A storage assembly is configured to pass a rinsing solution over the object to wash the reagent solution therefrom during a finishing rinse procedure performed after the phosphatizing procedure. This storage assembly includes a storage compartment in fluid communication with the run-off portion for receipt of substantially all the rinsing/reagent run-off fluids from the subfloor assembly. A fill pump, in fluid communication between the collection compartment and the storage compartment, is provided to transfer rinsing/reagent run-off fluids collected in the storage compartment to the collection compartment when the reagent solution contained therein drops below a predetermined operational fluid level.
    • 提供用于磷化包括闭环磷酸化组件的物体的磷酸化系统,其被配置成在磷酸化过程期间使磷酸化试剂溶液通过物体。 磷酸化组件包括收集室,其与支撑物体的底层地板组件的径流部分流体连通,用于从底层地板组件接收基本上所有的试剂流出液。 存储组件被配置为在磷化过程之后执行的最终漂洗过程中将漂洗溶液通过物体以从其上洗涤试剂溶液。 这种存储组件包括与流出部分流体连通的储存室,用于从底层地板组件接收基本上所有的漂洗/试剂流出液。 提供在收集室和储藏室之间流体连通的填充泵,当收集在其中的试剂溶液低于预定操作液位时,将收集在储存室中的冲洗/试剂流出物流转移到收集室。
    • 8. 发明授权
    • Driving method of an AC-type PDP and the display device
    • AC型PDP和显示装置的驱动方法
    • US5952986A
    • 1999-09-14
    • US813485
    • 1997-03-07
    • Thanh Nhan NguyenAkira Otsuka
    • Thanh Nhan NguyenAkira Otsuka
    • G09G3/20G09G3/288G09G3/291G09G3/292G09G3/293G09G3/294G09G3/298G09G3/28
    • G09G3/2927G09G3/2932G09G3/294G09G3/298G09G2320/0228
    • In driving an AC type PDP of a matrix formation formed of lines and rows, the PDP includes: plural first and second sustain electrodes arranged on a first substrate, each extending along the line direction, the first & second sustain electrodes being in parallel and adjacent to each other; plural address electrodes arranged on a second substrate opposing the first substrate via a discharge space, each extending along the row direction; and a dielectric layer for covering the first and second sustain electrodes, wherein the method comprises: in causing a writing discharge between the first & second sustain electrodes, the step of: causing supplementally a discharge between the address electrode and the second sustain electrode, wherein the address electrode is positive with respect to the second sustain electrode; and concurrently causing said writing discharge between the first and second electrodes, wherein the first sustain electrode is positive with respect to the second sustain electrode. The second sustain electrode is preferably negative with respect to the reference voltage so that the supplied pulse voltages can be lowered.
    • 在驱动由行和行形成的矩阵形式的AC型PDP时,PDP包括:布置在第一基板上的多个第一和第二维持电极,每个沿着线方向延伸,第一和第二维持电极平行且相邻 对彼此; 多个地址电极经由放电空间布置在与第一基板相对的第二基板上,每个沿着行方向延伸; 以及用于覆盖第一和第二维持电极的电介质层,其中所述方法包括:在所述第一和第二维持电极之间引起写入放电,所述步骤:在所述寻址电极和所述第二维持电极之间补充放电,其中 寻址电极相对于第二维持电极为正; 并且同时引起第一和第二电极之间的写入放电,其中第一维持电极相对于第二维持电极为正。 第二维持电极相对于参考电压优选为负值,使得所提供的脉冲电压可以降低。