一种新的直接自适应控制方法及其在制导系统中的应用  

A new direct adaptive control and its application to a guidance system

作　　者：李年裕[1] 刘藻珍[2] 

机构地区：[1]装甲兵工程学院控制工程系,北京100072 [2]北京理工大学机电工程学院,北京100081

出　　处：《控制理论与应用》2007年第5期825-828,共4页Control Theory & Applications

摘　　要：基于CGT的直接自适应控制器结构简单,不需要滤波器,但要求被控对象是几乎严格正实的,这一点限制了它的应用.通常的改进方法是采用并联前馈补偿器,但这种前馈补偿器有时很难求,甚至找不到.为此,本文提出了一种改进的方法,其思想是:把被控对象按结构分解为满足几乎严格正实性要求和不满足这一要求的两部分,然后,分别对其采用基于CGT自适应控制方法和鲁棒控制方法设计控制器,从而避免了求被控对象并联前馈补偿器这一棘手问题.文中给出了这种方法在某导弹制导系统的应用,仿真结果表明该方法正确可行.The structure of a command generator tracker （CGT）-based direct adaptive controller is simple, and no filter is needed. However, the controlled plants are required to be almost strictly positive real （ASPR）, which limits its applications. The common improvement is putting a Parallel feed-forward compensator （PFC） to the plants, but sometimes it is difficult, even impossible, to determine the PFC. An improvement is presented in this paper. Firstly, the plant is divided into two parts according to its structure, one is ASPR and another is not. Then, a CGT-based direct adaptive controller and a robust controller are used to the two parts, respectively, which avoids finding the PFC. Finally, the proposed approach is applied to the design of a missile＇s guidance system, and simulations are performed to show that the method is correct and feasible.

关 键 词：CGT 直接自适应控制 制导 仿真 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]