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- W2263589592 abstract "In order to decrease the nonlinearity of a Micromechanical Tunneling Gyroscope(MTG),enlarge its band width and raise the signal-to-noise ratio of the system,the tunneling gap between the tunneling tip and the corresponding tunneling electrode should be controlled in 1 nm,moreover the MTG must operate in the closed-loop mode.Based on the anti-interference and robustness of the Linear Quadratic Gauss(LQG) control theory and time-varying characteristics of Coriolis acceleration,this paper uses the predictive-LQG control strategy formed by a series of time-varying Kalman filter and an optimal LQG controller to design a closed-loop control system for the MTG.First,the overall control scheme was designed according to the operating principle of the MTG.Then,the two series of the predictive-LQG controllers were designed on the basis of the establishment of the extended dynamic equation of the MTG.Finally,the predictive-LQG controller system of the MTG was built up by Simulink,and a numerical simulation was performed.The simulation results prove that the tunneling gap has been controlled in 1 nm and the measured input angular rate could be estimated accurately by the predictive-LQG controller even if the input angular rate is a slowly varying random signal.And the estimation accuracy can reach 10-4rad/s." @default.
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- W2263589592 date "2011-01-01" @default.
- W2263589592 modified "2023-09-27" @default.
- W2263589592 title "Time-varying predictive-LQG control for micromechanical tunneling gyroscope" @default.
- W2263589592 doi "https://doi.org/10.3788/ope.20111911.2657" @default.
- W2263589592 hasPublicationYear "2011" @default.
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