| 摘要 |
<p>A method of zeroing displacement data derived from a rotor (2) having an array of features (4) monitored by an array of stationary timing probes (3). The method comprising steps to calculate the displacement (d j ) at each probe (3) for each of at least two measured revolutions from time of arrival measurements. Each displacement (d j ) is defined as a sum of a common term (P common ) and a unique term (P j_unique ). The set of displacements (d j ) is solved for the common term (P common ) and the unique terms (P j_unique ). A probe offset (P j_offset ) is calculated from each unique term (P j_unique ). The zeroed displacements ( d j ) are determined by subtracting the common term (P common ) and probe offset (P j_offset ) from the calculated displacements (d j ) for each probe (3).</p> |
