摘要
在很多实际环境中,系统模型参数经常是不确定的,使离散混沌系统的控制策略可能不再有效。当参数不能直接观测时,开闭环控制方案将由于不精确的系统模型而失效。针对这个问题,提出了参数自适应开闭环控制策略来控制不确定参数的离散混沌系统。对开闭环控制在不确定参数条件下,参数变化满足控制需要的条件进行了讨论。同时,提出了参数自适应开闭环控制,将原有的开闭环控制推广到更大的范围。从Henon系统的仿真中,参数自适应开闭环控制策略显示了良好的抗扰动特性。
Model parameters of systems are always uncertain in many realistic environments so that control schemes discrete for chaotic systems may be not effective and it is more difficult to control discrete chaotic systems than before. E given parameters obey a definitive rule, the open-plus-closed-loop control scheme ( OPCL) can be still available. When parameters can not be observed directly, the OPCL control scheme will be failed for imprecise system model. To this problem, a parametric adaptive open-plus-closed-loop control (PAOPCL) is proposed to control discrete chaotic systems with uncertain parameters. The conditions of the parameter variance are discussed to meet the control performance. From the simulation of H6non system, the PAOPCL control scheme shows a good character against disturbance.
出处
《控制工程》
CSCD
2004年第5期424-427,共4页
Control Engineering of China
基金
浙江省自然科学基金资助项目(602099)
