Abstract:The goal of this paper is to investigate how the vibration characteristics within a drill pipe can be modulated using (i) active control laws, or (ii) appropriate choices of impedance properties within the continuum. It is assumed in the paper that the continuum could have multiple sources of inputs, some acting as disturbance and some as control. The continuum was assumed to have generalized impedance at the two boundaries. In the paper, the structure of the transfer function is derived. Then, control laws ar… Show more
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