The existence condition is then transformed to the stabilizability of the assistant system through a generalized inverse matrix and the assistant system.
利用广义逆矩阵并构造辅助系统 ，将降价观测器的存在条件转化为判断辅助系统的可镇定性 。
2
Precisely, after a proper change of basis in the state space the condition can be expressed in terms of the notions of stabilizability and detectability.
准确地说，在经过一个适当的状态空间基底变换后该条件通过能稳性和能检测性概念表述。
3
For two classes of controllers with given structure, the sufficient conditions for robust stabilizability of uncertain discrete time-delay systems are dervied.