Three-dimensional Guidance Law of Flight Velocity Adjustable Missiles
In order to obtain better guidance performances,a dual-control sliding mode guidance rate of proportional guidance and flight speed control in three-dimensional space was proposed for a class of missile with flow-adjustable engines by using the increased freedom of flight speed control.On the basis of proportional guidance and analysis on two-dimensional and three-dimensional zero-con-trol miss distance,the suitable sliding mode surface is selected with the zero-control miss distance as the tracking target,and the aux-iliary sliding mode surface and finite-time super-twisting interference observer are used to estimate the uncertainties of sliding mode surface.The simulation results show that compared with the classical proportional guidance,the designed guidance rate has smaller miss distance,smoother trajectory,and ideal convergence of the sliding mode surface under the consideration of air resistance,which achieves the active control of missile flight speed.
missileguidance lawsliding mode controlsuper-twisting algorithmflight velocity control
万方数据
维普
