摘要
Recent investigations have shown that with varying the amplitude of the external force,the deterministicratchets exhibit multiple current reversals,which are undesirable in certain circumstances.To control the multiple reversecurrent to unidirectional current,an adaptive control law is presented inspired from the relation between multiple reversalscurrent and the chaos-periodic/quasiperiodic transition of the transport velocity.The designed controller can stabilizethe transport velocity of ratchets to steady state and suppress any chaos-periodic/quasiperiodic transition,namely,thestable transport in ratchets is achieved,which makes the current sign unchanged.
Recent investigations have shown that with varying the amplitude of the external force, the deterministic ratchets exhibit multiple current reversals, which are undesirable in certain circumstances. To control the multiple reverse current to unidirectional current, an adaptive control law is presented inspired from the relation between multiple reversaJs current and the chaos-periodic/quasiperiodic transition of the transport velocity. The designed controller can stabilize the transport velocity of ratchets to steady state and suppress any chaos-periodic/quasiperiodic transition, namely, the stable transport in ratchets is achieved, which makes the current sign unchanged.
基金
Supported by the National Natural Science Foundation of China under Grant Nos. 10862001 and 10947011
the Construction of Key Laboratories in Universities of Guangxi under Grant No. 200912
关键词
反向电流
棘轮
单向
自适应控制法
督导
调查表
运输
控制器
deterministic ratchets, multiple current reversals, unidirectional current, adaptive control
