In this paper, a linear matrix inequality (LMI) approach without constraints is developed to solve W and P problems, which are related to designing static output feedback (SOF) stabilization controls for linear systems.

• 利用无约束条件的线性矩阵不等式 (LMI)研究了W 问题和P 问题 ；而后者的解可用来设计静态输出反馈 (SOF)镇定控制 .