摘要
针对一类离散时间系统,提出一种变结构控制设计方法.通过构造幂次趋近律,使得系统的准滑动模态不仅能保持步步穿越切换面的基本属性,而且能大幅度削弱抖振,有效地改善控制品质,提高系统的鲁棒性.采样周期越短,该控制方法的效果越明显.仿真实例表明了所设计控制器的可行性和有效性.
According to a class of discrete-time system, a variable structure control design method is considered. By constructing the power reaching law, the quasi sliding mode can not only keop the basic property of traversing switching surface step by step, but also weaken the quiver intensively, improve the control quality, and increase the system robust performance. The sample cycle is shorter, the advantage of the control method is more evidence. The simulation example shows the feasibility and effectiveness of the designed controller.
出处
《控制与决策》
EI
CSCD
北大核心
2008年第6期643-646,共4页
Control and Decision
基金
国家自然科学基金项目(60643003)
上海市教委科研基金项目(6LZ013)
上海市教委科研创新项目(08LZ144)
关键词
离散时间系统
滑动模态
趋近律
Discrete time system
Sliding mode
Reaching law
