| 摘要 |
An apparatus is disclosed for aligning brushes of a dynamoelectric machine such as a dc generator or motor to minimize arcing of the brushes. The alignment monitor processes electrical signals from brushes of a dynamoelectric machine during tests in which various levels of buck or boost current are superimposed on a preselected level of excitation current applied to the machine; the monitor produces output signals which, together with the levels of applied buck or boost currents, are indicative of the brushholder rigging adjustment which is required to achieve the optimum rigging position for a wide range of arc-free machine operation. Included in the brush alignment monitor are, respectively, a high-pass filter, a clipping network, rectification means, a second high-pass filter, a discriminator, an rf amplifier and a peak integrator with alignment indicating means. Also included is an rf generator network which is used to test the operation of the alignment apparatus.
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