of;
Research,;
Xi'an;
Research;
Institute;
of;
High-Tech,;
Xi'an;
Shaanxi;
710025,;
Chinat;
and;
Simulation;
Center,;
Harbin;
Institute;
of;
Technology,;
Harbin;
Heilong~iang;
150080,;
China;
有限时间控制; 线性时不变; 时变系统; 无穷大; Lyapunov函数; 线性矩阵不等式; 黎卡提不等式; 时间变化;