The guaranteed cost controllers can be obtained by solving the linear matrix inequality, which makes the closed-loop systems quadratic stable for all admissible uncertainties, as well as guarantying the cost is bounded in a limitation.

• 通过求解相应的线性矩阵不等式就可得到鲁棒保成本控制,所设计的保成本控制器对所有容许的不确定性不仅使得相应的闭环系统达到二次稳定,也能保证闭环成本函数不超过一个确定的界。