A Disturbance Decoupling and Suppression Method Based on Gyroscope and Precision TV Signal Fusion

Abstract

The invention discloses a disturbance decoupling and suppression method based on the fusion of gyro and fine TV signals. The azimuth axis and the pitch axis of the photoelectric tracking system are respectively loaded with angular rate gyroscope A and angular rate gyroscope E, and the gyroscope signal is used for coarse The velocity loop of the tracking loop is closed, in addition, the high frequency part of the decoupling gyro signal is the high frequency part of the disturbance signal. The precision TV is installed inside the rack, and the target deviation is detected by the fast mirror. The precision TV signal is used for the closed loop of the precision tracking loop. At the same time, the low-frequency signal of the precision TV is decoupled and the decoupled gyro signal is fused and fed forward to the precision tracking loop, which can improve the performance. The ability of the system to suppress disturbances, but does not affect the system's target tracking ability, to achieve precise and stable control. The present invention does not need to add additional sensors, and does not need to establish an equivalent model of the control object. The structure is simple, which is beneficial to the realization of the project.

Description

technical field [0001] The invention relates to the field of inertial stability control, in particular to a disturbance decoupling and suppression method based on gyro and precision TV signal fusion. Background technique [0002] The photoelectric tracking system mounted on the moving carrier will be subject to various disturbances from the carrier and itself, which directly affects the target tracking accuracy of the system. The traditional method is to install the sensor on the rack, and use the sensor signal to improve the disturbance suppression bandwidth of the system through multi-loop closed-loop, thereby improving the disturbance suppression capability. However, the control bandwidth of this method is limited by the sensor sampling frequency, mechanical resonance, the quality of the control object and other factors, and the disturbance suppression ability is insufficient. Aiming at the problem of insufficient bandwidth for system disturbance suppression, the present...

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: to propose a disturbance decoupling and suppression method based on the fusion of gyroscope and precision TV signal, mainly by decoupling the inertial sensor rate gyro signal and the precision TV miss signal, and then feedforward control through the fusion signal The method solves the problem of insufficient disturbance suppression ability of the photoelectric tracking system, and at the same time improves the target tracking ability of the system

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