Investigation of a homodyne and a heterodyne laser interferometer for dynamic force measurement

Li Zhang; Rolf Kumme

doi:10.1117/12.579622

22 June 2004 Investigation of a homodyne and a heterodyne laser interferometer for dynamic force measurement

Li Zhang, Rolf Kumme

Proceedings Volume 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2004) https://doi.org/10.1117/12.579622
Event: Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2004, Ancona, Italy

Abstract

Homodyne and heterodyne laser interferometers can be used for dynamic force calibration and for acceleration measurement with sinusoidal and with shock excitation. The characterisics of both types of interferometers in acceleration measurement are compared in this paper. The data acquisition system comprises a four channels ADC card and a digital multimeter to sample the interferometer and force transducer or acccelerometer signals synchronously. The nonlinearity effects of homodyne and heterodyne interferometers in acceleration measurement are analyzed. A transducer is calibrated using both interferometers and good accordance is demonstrated.

Citation Download Citation

Li Zhang and Rolf Kumme "Investigation of a homodyne and a heterodyne laser interferometer for dynamic force measurement", Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); https://doi.org/10.1117/12.579622

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