Frequency-shaping LQ control of Maglev suspension systems for optimal performance with deterministic and stochastic inputs

Methods for achieving target performance specifications for suspension controllers on low-speed Maglev vehicles using linear quadratic (LQ) control are examined. In particular, a technique involving frequencydomain weightings in the performance criterion integral to reach performance targets simultaneously for stochastic and deterministic inputs is investigated. It is shown that good performance is obtained with the added benefit of obviating the vexed problem of estimating criterion integral weightings in conventional LQG control design. Indexing terms.