Mixed control for robust vibration isolation: numerical energy comparison for an active micro suspension device

摘要

An original control approach for robust vibration isolation is introduced in this paper. Two feedback signals, the relative displacement and the transmitted force between the sensitive element and its disturbing support, are employed in a so-called mixed control design. This strategy is used to perform control in the case of protection of electronic components, such as frequency generators, vibrating gyroscopes and certain accelerometers, essential to the operation of electronic cards. The simplicity of the control law allows us to tune the parameters of the controller with a very simple optimization process. The proposed isolation control is implemented and optimized for a micromechanical piezocomposite structure and the performance and the energy cost are compared with those of integral sliding control and LMI-optimized control.