| 摘要 |
Device for control and/or measurement of test objects which device simulates a transducer and/or transducer movement with the aid of a plurality of eddy-current based transducers (G) which are stationary relative to each other, and a selector/distributor (5). The transducers are, for example, mounted in a plane parallel to the surface (1) of the test object and scan the test object with respect to a quantity, for example a crack (2). The resultant imaginary/simulated transducer signal is signal processed (4) by means of, for example, automatic compensation and vector transformation technique. The principle comprises automatically switching in the transducers in succession, for example in a continuously recurrent sequence, whereby signals originating from different transducers completely or partially determine different time portions of a resultant signal, and a quantity or combination of quantities is tested and/or measured by means of said transducers. |
