Integrated guidance and autopilot design for a chasing UAV via high-order sliding modes. (English) Zbl 1254.93059

Yamasaki, Takeshi; Balakrishnan, S. N.; Takano, Hiroyuki

J. Franklin Inst. 349, No. 2, 531-558 (2012).

Summary: Integrated Guidance and Control (IGC) approaches exploit the synergy between guidance and control designs. This study focuses on the integrated guidance and control (autopilot) design for a chasing Uninhabited Aerial Vehicle (UAV) against a target aircraft. A second-order sliding structure with a Second-Order Sliding Mode (SOSM) including a High-Order Sliding Mode (HOSM) observer for the estimation of the uncertain sliding surfaces is selected to develop an integrated guidance and autopilot scheme. In order to make the design synthesis easier, intermediate control variables for partial derivatives of a sliding surface are carefully selected. The resulting sliding surface structure is simple and sufficient to relate the actuator input to the sliding surface. The potential of the proposed method is demonstrated through an aircraft application by comparing its simulation performance, number of tuning parameters used, and information needed for its implementation with an approach where the guidance law and the controller are designed separately.

MSC:

93B12	Variable structure systems
70P05	Variable mass, rockets
93C15	Control/observation systems governed by ordinary differential equations

Keywords:

integrated guidance and control (IGC); Uninhabited Aerial Vehicle (UAV); second-order sliding structure; high-order sliding mode (HOSM) observer; uncertain sliding surfaces; design synthesis

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