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Acta Armamentarii ›› 2015, Vol. 36 ›› Issue (4): 660-667.doi: 10.3969/j.issn.1000-1093.2015.04.013

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Design of Adaptive Fuzzy Dynamic Surface Sliding-mode Guidance Law Considering Autopilot Lag

SHANG Wei, TANG Sheng-jing, GUO Jie, MA Yue-yue, ZHANG Yao   

  1. (Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, Beijing Institute of Technology,Beijing 100081, China)
  • Received:2014-04-30 Revised:2014-04-30 Online:2015-06-02
  • Contact: SHANG Wei E-mail:shw2012@bit.edu.cn

Abstract: Based on adaptive fuzzy approach strategies and dynamic surface sliding mode control techniques, a novel interception guidance law is proposed for the problem that a missile attacks a high maneuvering target. Relative motion equations of missile and target are established accounting for autopilot lag. Based on the annihilating idea of the missile-target LOS(line-of-sight) angular velocity, a dynamic surface sliding mode guidance law is designed with adaptive reaching law. Meanwhile, the adaptive fuzzy method based on integrated the LOS angular velocity and missile-target distance is adopted to approach variable-structure term. The simulation results show that this law can remove chattering phenomenon. Moreover, this law has higher guidance precision to high maneuvering.

Key words: control science and technology, guidance law, adaptive fuzzy approach, dynamic sliding-mode control, autopilot lag

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