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    • 8. 发明授权
    • Differential sensor apparatus and method for laminated core fault detection
    • 差分传感器装置和层叠铁芯故障检测方法
    • US06873152B2
    • 2005-03-29
    • US10248246
    • 2002-12-30
    • Gerald Burt KlimanManoj Ramprasad ShahSang-Bin Lee
    • Gerald Burt KlimanManoj Ramprasad ShahSang-Bin Lee
    • G01N27/82G01R31/34
    • G01R31/34G01N27/82
    • A differential probe is scanned along a stator core tooth portion to detect lamination faults. The probe utilizes two magnetic flux injection yokes arranged side-by-side in relatively close proximity, each yoke having two arm portions and two core-tooth flux-injection surfaces, each yoke being wound with an excitation coil winding and at least one yoke-arm of each yoke having a magnetic flux sensor. Current is supplied to the excitation coil windings on each yoke to inject magnetic flux into the stator core laminations while the probe is moved in a scanning process along the core teeth across the laminations. The magnetic flux differential detected at adjacent regions in the core by flux sensors on each of the two yokes is used to incrementally evaluate the core for laminations faults. The output produced by the differential probe may be converted to a digital signal and provided to a computer system for storage and future analysis.
    • 沿着定子铁心齿部扫描差动探头以检测层压故障。 该探头利用两个相对靠近并排配置的磁通量注入磁轭,每个磁轭具有两个臂部分和两个磁芯 - 磁通注入表面,每个磁轭缠绕有励磁线圈绕组和至少一个磁轭 - 每个轭的臂具有磁通量传感器。 电流被提供给每个磁轭上的励磁线圈绕组,以将磁通量注入到定子铁芯叠片中,同时探头沿着穿过叠片的芯齿的扫描过程移动。 在两个轭中的每一个上通过磁通传感器在核心的相邻区域处检测的磁通量差被用于递增地评估核心的叠层故障。 由差分探头产生的输出可以转换为数字信号,并提供给计算机系统用于存储和将来的分析。