Regular Papers
A Linear Least Square with Duffing Chaotic Detection Designed in Micro-Distance Movement Measurement System
2016 年 20 巻 2 号 p. 287-293
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2016 年 20 巻 2 号 p. 287-293
High precision micro displacement measurement framework is fundamental for drilling strain gauges. We replaced the traditional lock-in amplifier method by the linear least square (LLS) based on Duffing chaotic detection (DCD) in drilling strain gauges. Simulation results showed that LLS based on DCD has a relative error 7.7% when SNR=-20.79 dB. It is 410.1% lower than lock-in amplifier method in the detection. Even more, the design and realization of LLS based on DCD is easier than lock-in amplifier method.
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