摘要
雷达进行目标跟踪时,天线需要在不同的目标间进行大角度切换,而时间最优控制算法可以使电机获得最大的驱动能力并驱动天线快速地切换到目标。针对该算法中的"颤振"问题,提出了在开关线两侧设置"缓冲区"的实用型改进算法。此外为了提高系统的稳态性能,当运动至目标位置邻域时,由时间最优控制算法切换为滑模变结构控制算法。工程应用结果表明,该组合控制算法有效地解决了时间最优控制在实际应用中的"颤振"问题,并能保持很好的稳态性能。
When the radar is tracking two or more targets,the antenna is required to move a large angle between two targets.With the application of the optimal-time control algorithm,the motor can release its maximal driving moment and drive the antenna to move to the target position rapidly.To solve the vibration problem of the optimal-time control algorithm,an improved algorithm is proposed,which has a buffer region on both sides of the switch line.When the antenna moves to the end of the desired final state,sliding mode control（SMC）technique is employed to improve the static performance of the system.The application of the proposed control scheme shows that the vibration is effectively restrained,and the system has a good static performance.
出处
《雷达科学与技术》
2014年第2期210-213,共4页
Radar Science and Technology
