METHOD OF MEASURING LINEAR DISPLACEMENT AND DEVICE FOR REALISING SAID METHOD Russian patent published in 2010 - IPC G01B17/00 

FIELD: physics.

SUBSTANCE: device has a magnetostrictive transducer 1, an acoustic line made from magnetostrictive material 2, an exciting electroacoustic transducer (EAT) 3 which is fixed relative the acoustic line of the reception electroacoustic transducer 4 which is rigidly connected to the movable end of an elastic element 5 which is in contact with the monitored object, acoustic dampers 6 and 7 placed at the ends of the acoustic line, an electric motor 8, small linear displacement sensors 9 and 10, as well as a controller 11.

EFFECT: higher accuracy of measuring linear displacement due to correction of error components arising from apparatus delay.

2 cl, 1 dwg