| Citation: | ZHAO Yulong, SHEN Huairong, REN Yuanet al. Modeling and analysis of superfluid quantum interference gyro driven by heat[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(12): 2473-2479. doi: 10.13700/j.bh.1001-5965.2016.0927(in Chinese)
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Multi-parameter change and interaction of internal flow, pressure and temperature lead to a complex relationship between heating resistor power and superfluid Josephson frequency when the superfluid quantum interference gyro is driven by heat. In order to obtain sustained and stable Josephson frequency, the Josephson frequency formation mechanism of gyro must be accurately modeled. With regard to heat-driven mode of superfluid quantum interference gyro, the temperature change, pressure change and input-output model of gyro were firstly established in terms of the inner cavity entropy change. Then, the characteristics of temperature and pressure change with time were analyzed under the condition of constant heating resistor power and linear time-varying heating resistor power. The ranges of heating resistance power and Josephson frequency were obtained by comparing the chemical potential difference and Josephson frequency at different heating resistance power. Finally, the effect of Josephson frequency on output and accuracy of the gyro is explored and analyzed.
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