公开(公告)号：US5252915A

公开(公告)日：1993-10-12

申请号：US824392

申请日：1992-01-23

申请人： Howard G. Sedding ,  Blake A. Lloyd ,  James Penman

发明人： Howard G. Sedding ,  Blake A. Lloyd ,  James Penman

IPC分类号： G01R31/34 ,  G01R31/02

CPC分类号： G01R31/343

摘要： In order to determine the occurrence of a stator fault in an induction motor during operation of the motor, the axial leakage flux is monitored during operation of the motor. The occurrence of a stator fault is detected by observing a change in selected harmonic components of the axial leakage. The angular position of the fault with respect to a datum position is determined by noting and recording changes in the axial leakage flux at a plurality of positions distributed symmetrically around the axis of the motor and computing the angular position by triangulation. The axial leakage flux is detected by individual search coils located at said plurality of positions.

公开(公告)号：US06422079B1

公开(公告)日：2002-07-23

申请号：US09403913

申请日：2000-01-27

申请人： Albert Alexander Rodger ,  Gavin Stuart Littlejohn ,  Richard David Neilson ,  James Penman

发明人： Albert Alexander Rodger ,  Gavin Stuart Littlejohn ,  Richard David Neilson ,  James Penman

IPC分类号： G01H900

CPC分类号： G01N29/4427 ,  E02D5/80 ,  E02D33/00 ,  G01N29/045 ,  G01N29/4481 ,  G01N29/449 ,  G01N29/46 ,  G01N2291/0234 ,  G01N2291/02827

摘要： A ground anchorage testing arrangement having an impulse imparting apparatus connectable to a ground anchorage tendon (20) or element thereof to be tested, the impulse imparting apparatus comprising an attachment means (22) for attachment to the ground anchorage tendon (20), a movable mass (31), a guide (28, 34) for guiding movement of the mass in the direction substantially aligned with the axis 0 of the ground anchorage to be tested and a drive means for imparting a driving force to move the mass in said direction (not shown). A method of assessing the integrity of ground anchorages, the method comprising the steps of (a) imparting a load impulse to a ground anchorage tendon to be tested, (b) monitoring the vibrational response signal of the anchorage to the imparted load impulse, (c) conditioning the vibrational response signal and (d) applying the conditioned vibrational response signal to an artificial neural network.

摘要翻译： 一种地面锚固测试装置，其具有可连接到待测试的地面锚固筋（20）或其元件的脉冲施加装置，所述脉冲施加装置包括用于附接到地面锚固筋（20）的附接装置（22） 质量块（31），引导件（28,34），用于引导所述质量块沿与待测试的地面锚固件的轴线0基本对齐的方向的运动;以及驱动装置，用于施加驱动力以沿所述方向移动所述质量块 （未示出）。 一种评估地面锚固物的完整性的方法，所述方法包括以下步骤：（a）向待测试的地面锚固筋施加载荷冲击，（b）将所述锚地的振动响应信号监测到所施加的载荷冲击， c）调节振动响应信号和（d）将调节的振动响应信号应用于人造神经网络。