The purpose of this paper is to investigate the efficacy of the LEQG control for a single-link flexible arm, experimentally. Assuming that the servomotor is an ideal actuator commanded by an angular velocity signal, a linearized mathematical model is described by an Euler-Bernoulli type partial differential equation. The control strategy is tested on the experimental equipment composed of a velocity servomotor and a single thin brass strip with piezoelectric films. © 2005 SICE.