However, the global astringency of the interior point method for nonconvex problems is doubtml theoretically. 但在理论上，内点法求解非凸优化问题时的全局收敛性能受到质疑。
Furthermore, a convex optimization problem with LMI constraints is formulated to design the optimal guaranteed cost fault-tolerant controller. 进而，通过建立和求解一个线性矩阵不等式组约束的凸优化问题，给出了优化保成本容错控制器的设计方法。
