The problem of controlling conservative chaotic systems is investigated in this paper. Based on time delay feedback (TDF), a novel control method named auxiliary reference feedback (ARF) is presented. Different from TDF method, the basis to choose controlling parameters has been given. Only by appropriately adjusting feedback parameters and reference term, any periodical orbit can be reached by ARF. Numerical simulation results show that, ARF method is effective to control both dissipative and conservative systems. Moreover, we find that periodic windows controlled by ARF are stable in the presence of weak external noise.
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