Electromagnetic Levitation Control of an Elastic Steel Belt : Consideration on a Control Performance at the Traveling Speed of more than Critical Value

Abstract

For a traveling steel belt (SUS430) which is supported in a contactless manner by attractive forces of electromagnetic actuators, a theoretical and an experimental study on a control performance at the traveling speed of more than critical value were performed. And a suboptimal control theory was applied to minimize effects of spillover of residual Vibration modes of the belt. As a result, the levitation and transport control of the steel belt were realized to the traveling speed of more than critical value by using a simple digital optimal control technique. And it was further observed that the control performance was improved by applying the feedback gain taking the spillover of residual modes into account.