国防科技大学学报2018，Vol.40Issue(2)：22-27,6.DOI:10.11887/j.cn.201802004
考虑弹体动态特性的非奇异有限时间制导律
Nonsingular finite-time guidance law with missile dynamic
摘要
Abstract
In order to realize intercept angle constraint and finite-time convergence when a missile intercepts a maneuvering target,a guidance model was proposed on the basis of the first-order missile dynamics.By regarding the target acceleration as unknown bounded external disturbance, and by applying the dynamic surface of nonlinear backstepping theory,a nonsingular sliding mode guidance law with missile dynamic was designed. Based on the Lyapunov stability theory, it was proved that the states of guidance system asymptotically converged to zero.Simulations on intercepting targets with constant maneuvering of low attitude and high velocity were made.Simulation results indicate that the designed guidance law can effectively reduce the influence caused by the missile dynamic delay, and the miss distance and the intercept angle error are small; by comparison with the optimal guidance law with missile dynamic and intercept angle constraint, the designed guidance law has higher guidance accuracy.关键词
防空导弹/制导律/动态特性/交会角约束/滑模控制/有限时间Key words
air-defense missile/guidance law/dynamic characteristics/intercept angle constraint/sliding mode/finite time分类
军事科技引用本文复制引用
王超伦,宋保华,常超..考虑弹体动态特性的非奇异有限时间制导律[J].国防科技大学学报,2018,40(2):22-27,6.基金项目
国家自然科学基金资助项目(11202023) （11202023）
