When an electrical field is applied to a piezoelectric material, the material becomes mechanically strained. If this material is then bonded to a structure, this strain has an accompanying stress, and this can be used to introduce control forces into the structure. The paper considers this method of actuation by experimentally evaluating the use of piezoelectric plates for the purposes of controlling free and forced vibration in a cantilever beam. The control provided by measurements based on acceleration and strain rate is evaluated.
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