A dynamic model of a two-axis rate gyro-stabilized platform-based seeker with cross-coupling, mass imbalance, and disturbance torque is developed on the basis of the working principle of seeker two-loop steady tracking theory; coordinate transformations are used to analyze the effects of seeker servo control mode on missile guidance and control systems. Frequency domain is used to identify the servo motor transfer function. Furthermore, a block diagram of the two-gimbal-coupled system is developed, and the coupling characteristics of gimbal angle are analyzed with different missile body inputs. Simulation results show that the analysis conforms with the actual movement rule of seeker gimbal and optical axis, and cross-coupling exists between the two gimbals. The lag compensation network can increase the open loop gain and increase the capacity for disturbance rate rejection. Simulations validate the theory and technology support for developing the seeker servo control model in engineering.


    Access

    Download


    Export, share and cite



    Title :

    Dynamic Modeling and Coupling Characteristic Analysis of Two-Axis Rate Gyro Seeker


    Contributors:
    Shixiang Liu (author) / Tianyu Lu (author) / Teng Shang (author) / Qunli Xia (author)


    Publication date :

    2018




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Seeker Gyro Calibration Via Model-Based Fusion of Visual and Inertial Data

    Goldshtein, Maxim / Oshman, Yaakov / Efrati, Tzvi | AIAA | 2008


    Seeker Gyro Calibration Via Model-Based Fusion of Visual and Inertial Data

    Goldshtein, M. / Oshman, Y. / Efrati, T. et al. | British Library Conference Proceedings | 2008


    Identification of gyro drifts under three axis attitude coupling

    Jing, W. / Wang, X. / Wu, Y. | British Library Online Contents | 1998


    SYNOPTIC: Stationary and Nonstationary Characteristic of Gyro Drift Rate

    ALBERT S. ORAVETZ AND HERBERT J. SANDBERG | AIAA | 1970


    Theory of operation of a two-axis-rate gyro

    Craig, R.J.G. | Tema Archive | 1990