^pof;
Automation,;
Harbin;
University;
of;
Science;
and;
Technology,;
Harbin;
150080,;
China;
^pof;
Mathematics,;
Harbin;
University;
of;
Science;
and;
Technology,;
Harbin;
150080,;
China;
不确定非线性系统; 时变时滞系统; 成本最小化; 采样控制; Lyapunov稳定性理论; 时间延迟系统; 参数不确定性; 二次型性能指标;