2DOF control of an electrodynamic shaker using explicit receding horizon control for feedforward term

This paper presents the application of a two-degree-of-freedom (2DOF) control of an electrodynamic shaker. The characteristics of a shaking system are considered to be nonlinear and variable because of the influence of the test piece. In order to compensation for this problem, the influence of the disturbance force needs to be suppressed. The controller is designed using μ-synthesis by considering the uncertainty of the shaker. Furthermore, since the control performance is improved, an explicit receding horizon control controller is introduced to the 2DOF controller using Multi-Parametric Toolbox. A reference signal which is limited by the system specifications can be partly employed. Finally, a good performance can be realized, as confirmed by experiments conducted using actual equipment.