ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Feed-forward compensation of two-axis gimbal seeker installed on roll missile
Received date: 2015-12-02
Revised date: 2016-03-11
Online published: 2016-03-15
To solve the decoupling control problem of two-axis gimbal seeker installed on the roll missile, the stabilized loop of seeker model is built based on the kinematics and dynamics of the two-axis gimbal. In order to get the closed loop line of sight, the input and output under the roll situation is derived. The decoupling condition is based on the assumption that the pitch and yaw channels have the same transfer function between measuring disturbance angle and optical axis rotation speed. The effect of body roll rate on the tracking accuracy of the seeker is discussed with line of sight angle input, as well as the effect of body roll rate on the disturbance rejection with body attitude disturbance input. A feed forward compensation control method is proposed to reduce the effect of body roll rate. Simulation result shows that the two-axis gimbal seeker with feed-forward compensation control can satisfy the tracking accuracy of the rolling missile.
Key words： seeker; servomechanism; body roll rate; tracking accuracy; feed-forward control
LIU Xiao , MO Bo , LIU Fuxiang , YAN Xinying . Feed-forward compensation of two-axis gimbal seeker installed on roll missile[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(12) : 3764 -3773 . DOI: 10.7527/S1000-6893.2016.0076
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