Parallel feedforward and simplified adaptive control
Parallel feedforward and simplified adaptive control
复制标题
并行前馈和简化的自适应控制
DOI：
10.1002/acs.4480010202
复制
发表时间：
1987
影响因子：
3.1
通讯作者：
I. Bar
中科院分区：
文献类型：
--
作者：
I. Bar
简单的自适应控制系统最近被证明是全局稳定的，并且在存在干扰的情况下保持鲁棒性，如果被控对象是“几乎严格正实的”，也就是说，如果存在一个正的确定的静态输出反馈（未知的，不需要实现），使得所得到的闭环传递函数是严格正实的。
Simple adaptive control systems were recently shown to be globally stable and to maintain robustness in the presence of disturbances if the controlled plant is ‘almost strictly positive real’, namely, if there exists a positive definite static output feedback (unknown and not needed for implementation) such that the resulting closed-loop transfer function is strictly positive real.
This paper is an attempt to show in an intuitive way how to use parallel feedforward and the stabilizability properties of systems in order to satisfy the ‘almost positivity’ condition. The feedforward configuration may be stationary, if some prior knowledge is given, or adaptive, in general.
This way, simple adaptive controllers can be implemented in a large number of complex control systems, without requiring the order of the plant or the pole excess as prior knowledge