兵工自动化Issue(1):63-67,5.DOI:10.7690/bgzdh.2016.01.019
考虑动态延迟特性的含攻击角度约束的制导律
Guidance Law with Autopilot Lag for Impact Angle Constrained Trajectories
摘要
Abstract
Aiming at the problem of guidance law design for intercepting stationary or slowly moving targets with the impact angle constraint, Based on the missile-target dynamics in the plane, a guidance law is designed considering missile’s autopilot lag using the sliding mode variable structure and nonlinear back-stepping control methods. The missile’s dynamics of autopilot can be approximately described as a first-order process, meanwhile, the chattering phenomenon of sliding mode is weaken by the integrated application of high gain saturation function and improved variable switch term. Line of sight angle rate will converge to zero ultimately and the trajectory inclination angle will ultimately converge to the desired value, respectively. Simulation results show that the guidance law can be used to hit the targets with desirable impact angle and the influence of the autopilot lag on guidance accuracy can also be compensated, which has good adaptability and robustness against the changes of the parameters and external disturbances. The research can offer some references for practical engineering application.关键词
攻击角度约束/自动驾驶仪的动态延迟/滑模变结构/反步/制导律Key words
impact angle constraint/autopilot lag/sliding mode variable structure/back-stepping/guidance law分类
军事科技引用本文复制引用
王健,郭倩,刘涛,赵迪,史震..考虑动态延迟特性的含攻击角度约束的制导律[J].兵工自动化,2016,(1):63-67,5.基金项目
国家青年自然科学基金(51409059);黑龙江省自然科学基金项目(F201342) (51409059)