ABSTRACT In this paper, a low‐order integrated guidance and control (LOIGC) scheme is designed for Bank To Turn (BTT) reentry vehicle with impact angle constraints. First, the model of the LOIGC scheme is obtained by combining the three‐channel body rates and acceleration components of the reentry vehicle in the ballistic frame. The LOIGC model can be divided into two subsystems: body line‐of‐sight (LOS) angle subsystem and body rates subsystem. Second, a dual‐loop controller is designed for reentry vehicle with impact angle constraints. In order to lead the vehicle to attack target with desired impact angles, a model predictive controller (MPC) is designed for outer loop, the body rates of the three channels are utilized as pseudo‐inputs. Then the commands of fin deflections are obtained by the inner controller, which is designed using predefined‐time sliding mode control (SMC) and predefined‐time extended state observer (ESO). Finally, the effectiveness of the algorithm proposed in this paper is validated through the six‐degree‐of‐freedom (6DOF) simulation.
Cui et al. (Thu,) studied this question.