Research on elastic control method of hypersonic elastic vehicle

In order to reduce the weight of hypersonic vehicle, improve its range and load capacity, the design concept of slender body and light weight is generally adopted, which makes its rigidity reduce and flexibility increase, and then leads to the reduction of elastic mode frequency, which is more and more close to the rigid body mode. in addition, it is also the static instability layout, so the aero-elastic coupling problem becomes particularly important. The “filter optimalization based on self-adaptive cuckoo search algorithm + Supertwisting active elastic control methods ”are studied to solve the problem. Based on the signals of attitude angle, angular velocity, generalized coordinates and the changing rate of generalized coordinates, the fast and accurate convergence of attitude tracking errors are realized under the premise of avoiding the excitation of vehicle vibration mode. The effectiveness and robustness of the control method are verified by mathematical simulation.