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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2018, Vol. 39 ›› Issue (9): 322009-322017.doi: 10.7527/S1000-6893.2018.22009

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Trajectory reshaping based impact angle and time control

ZHANG Youan1, LIANG Yong2, LIU Jingmao3, SUN Yumei1   

  1. 1. Department of Electrical and Electronic Engineering, Yantai Nanshan University, Yantai 265713, China;
    2. School of Coast Defence, Naval Aeronautical and Astronautical University, Yantai 264001, China;
    3. Shandong Nanshan International Flight Co., Ltd., Yantai 265713, China
  • Received:2018-01-10 Revised:2018-02-10 Online:2018-09-15 Published:2018-06-05
  • Supported by:
    National Natural Science Foundation of China (61273058)

Abstract: The reshaped trajectory of the missile is supposed to be consisted of a circular arc and a straight line. The straight line goes through the target and satisfies the final impact angle constraint. The circular arc starts from the initial position of the missile, and is tangent to the straight line at a point to be determined. This point is obtained by the given impact time through an iterative algorithm. The feasible range of the impact time is given. On the basis of the reshaped trajectory, a new trajectory tracking control approach is presented based on the concept of virtual target, i.e., a compound control law composed of a feed-forward term and a feedback term is proposed for tracking the circular arc, and a proportional navigation guidance law with impact angle control is proposed for the straight line part. The proposed method is a geometry approach, and is thus easy to implement. The simulation results show that the proposed method is effective in controlling the impact angle and impact time simultaneously.

Key words: trajectory reshaping, impact angle, impact time, virtual target, trajectory tracking control, iterative algorithm, compound control, proportional navigation guidance

CLC Number: