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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.1 P.47~51

http://doi.org/10.1631/jzus.2002.0047


Using chaos to improve measurement precision


Author(s):  HE Bin, YANG Can-jun, ZHOU Yin-sheng, CHEN Ying

Affiliation(s):  The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   bhee@yeah.net

Key Words:  chaotic application, measurements precision, high sensitivity


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HE Bin, YANG Can-jun, ZHOU Yin-sheng, CHEN Ying. Using chaos to improve measurement precision[J]. Journal of Zhejiang University Science A, 2002, 3(1): 47~51.

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Abstract: 
If the measuring signals were input to the chaotic dynamic system as initial parameters, the system outputs might be in steady state, periodic state or chaos state. If the chaotic dynamic system outputs controlled in the periodic states, the periodic numbers would be changed most with the signals. Our novel method is to add chaotic dynamic vibration to the measurement or sensor system.The sensor sensitivity and precision of a measurement system would be improved with this method. Chaotic dynamics measurement algorithms are given and their sensitivity to parameters are analyzed in this paper. The effects of noises on the system are discussed.

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Reference

[1] Ahmed, E., 1999.On controlling chaos in an inflation-unemployment dynamical system, Chaos, Solitons & Fractals, 10(9): 1567-1570.

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[3] Hao Bailin, 1993. Starting with parabolas --- An introduction to chaotic dynamics. Shanghai. p.20-25.

[4] He,B., Yang C.J., Chen Y. et al., 2000. Study on enhancing sensitivity of eddy current sensor using chaotic system, Chinese Journal of Scientific Instrument, 21(10):195-197 (in Chinese, with English abstract).

[5] Steven,R. Bishop, 1998. Applying chaos control in periodic windows. Chaos, Solitons & Fractals, 9(8): 1297-1305.

[6] Walter,J. Freeman. 1993. Chaos in biodynamics of pattern recognition by neural network, Proc. of 1993 International Symposium on Nonlinear Theory and its Application, Hawaii, USA.

[7] Yan, M., Luo, W., Wu, Z.T., 2001. Miorostructure of asmelt spun AI-Cu-Mg-Fe-Ni alloy and its variation in continuous heat treat ment, Journal of Zhejiang university SCIENCE, 2(2):121-127.

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