37results about How to "Improve disturbance suppression ability" patented technology

The invention discloses a disturbance suppression method based on a composite disturbance observer, aiming at the problem that the low-frequency and medium-frequency disturbance suppression ability of the stable platform of the control system is insufficient and cannot meet the requirements of a higher-precision stable control system. On the basis of multi-closed-loop control, this method improves the traditional disturbance observer design, proposes a composite disturbance observer structure, and gives the design method of the inner and outer loop feedforward compensation controllers in the composite disturbance observer. The present invention utilizes the outer loop in the composite disturbance observer to estimate and reverse-phase feed-forward the middle frequency band and the external disturbance, and utilizes the inner loop to estimate and reverse-phase feed-forward the low-frequency band and the external disturbance, so that the inner and outer loops of the composite disturbance observer Simultaneously, the purpose of improving the disturbance suppression capability of the low-frequency band and the mid-frequency band of the system at the same time is finally achieved, and the stability and accuracy of the control system are improved.

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.