This paper is on suppression of carbody vibrations utilizing multiple-delay Delayed Resonator (DR) with combination of speed and position feedback. The resonance frequency of DR under varying excitation frequency is tuned by delay scheduling concept. Characteristic Treatment of Characteristic Roots (CTCR) method with Extended Kronecker Summation is used to assess both the operation frequency of DR and overall stability of the system. An experimental study is included to present the effectiveness of the method. (C) 2016, IFAC (International Federation of Automatic Control) Hosting, by Elsevier Ltd. All rights reserved.