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    • 6. 发明授权
    • Die for superplastic forming of titanium-based alloy
    • 钛基合金超塑性成形用模具
    • US5896784A
    • 1999-04-27
    • US819369
    • 1997-03-17
    • Akira KamiyaKatsuyoshi NaganumaMakoto Kato
    • Akira KamiyaKatsuyoshi NaganumaMakoto Kato
    • A61C13/00B22C1/00B22D21/00C04B32/00C04B35/14B21K5/20
    • C04B32/00C04B35/14C04B2111/0087C04B2111/00939Y10S72/709
    • The present invention provides a die for superplastic forming of titanium-based alloy with high-workability, which is inexpensive and easy to handle, and has detailed shape-reproducibility and no reactivity with titanium-based alloy to be processed, and has excellent accordance with it in a thermal expansion coefficient. This invention relates to a die for superplastic forming of titanium-based alloy characterized by comprising quartz, cristobalite and calcium silicate. The above die for superplastic forming of titanium-based alloy is produced by kneading a mixed powder of quartz and cristobalite, together with a binder containing a plaster additive of less than 30 weight % based on the total amount with water, forming the mixture, drying the formed product and sintering it in the atmosphere to convert the plaster additive into calcium silicate.
    • 本发明提供一种具有高加工性的钛基合金的超塑性成型用模具,其成本低廉且易于处理,并且具有详细的形状再现性和与待处理的钛基合金的反应性,并且与 它具有热膨胀系数。 本发明涉及一种用于钛基合金超塑性成型的模具,其特征在于包括石英,方英石和硅酸钙。 上述用于钛基合金超塑性成型的模具是通过将石英和方英石的混合粉末与含水量基于总量小于30重量%的石膏添加剂的粘合剂混合制成的,形成混合物,干燥 形成的产品并在大气中烧结以将石膏添加剂转化为硅酸钙。
    • 9. 发明授权
    • Method and system for azimuth measurements using gyro sensors
    • 使用陀螺传感器进行方位测量的方法和系统
    • US07801704B2
    • 2010-09-21
    • US12233592
    • 2008-09-19
    • Shigeru SatoJuei IgarashiAkira KamiyaTsutomu Yamate
    • Shigeru SatoJuei IgarashiAkira KamiyaTsutomu Yamate
    • G01C9/00G01C19/00G06F15/00
    • E21B47/022G01C19/42
    • A method and system for azimuth measurements using one or more gyro sensors is disclosed. The method includes acquiring a first data from each of the gyro sensors with an input axis aligned to a first angular orientation and acquiring a second data from each of the gyro sensors with the input axis flipped to a second angular orientation opposite to the first angular orientation. An earth rate component at the first angular orientations is determined based on a difference between the first data and the second data to cancel out bias of each of the gyro sensors. The method may include acquiring a third data of the gyro sensor with the input axis aligned to the same angular orientation as the first angular orientation. An average of the first data and the third data may be used instead of the first data for determining the earth rate component.
    • 公开了一种使用一个或多个陀螺传感器进行方位测量的方法和系统。 该方法包括从每个陀螺传感器获取第一数据,其中输入轴与第一角度取向对准,并且从每个陀螺仪传感器获取第二数据,其中输入轴被翻转到与第一角度取向相反的第二角度取向 。 基于第一数据和第二数据之间的差来确定第一角度取向处的地球速率分量以抵消每个陀螺仪传感器的偏置。 该方法可以包括获取陀螺仪传感器的第三数据,其中输入轴与第一角度取向对准与相同的角度取向。 可以使用第一数据和第三数据的平均值而不是用于确定地球速率分量的第一数据。