Independent modal resonant shunt for multimode vibration control of a truss-cored sandwich panel

Abstract

To realize multimode vibration control of a trusscored sandwich panel, an independent modal resonant shunt control method is proposed in this paper. In this method, each piezoelectric stack transducer is connected to a single resonant shunt which is tuned to control the vibration of a single mode, and the location of the transducer is optimized to get a maximal electromechanical coupling with this mode. It is found that the optimal values of the resistance and inductance can not be determined by using a single-mode model of the structure, and thus a practical optimization method is employed to optimize the resonant shunt, which is verified with numerical simulation. The result shows that this method can add significant damping ratio to the controlled modes, and the resonant shunt circuits of different modes have no effect on each other. Finally the control effect of resonant shunt is compared with viscoelastic damper. It is indicated that the parameters of the resonant shunt can be tuned to get better effect.

Shunt Damping Vibration Control Technology: A Review

“…Wu [75] proposed the parallel RL shunt circuit shown in Figure 4c, the similar shunt can be found in [76][77][78]. Guo and Jiang [79] utilized the R-L shunt to construct a modal piezoelectric transducer to control vibrations of a truss-cored sandwich panel. The series and parallel resonant shunts can obtain similar vibration control performance, but the parallel one is less sensitive to the optimal resistance.…”

Random Vibration Suppression of a Truss Core Sandwich Panel Using Independent Modal Resonant Shunt and Modal Criterion

“…But these tuning methods were based on one degree-of-freedom (DOF) systems. In [15] it is shown that when the number of mechanical DOF is far greater than the electrical DOF, the optimal RL value based on single-mode truncation can lose effectiveness, so a full-order model must be used in the optimization process. In the independent modal resonant shunt circuit method, supposing there are n modes to control, owing to the independence between the shunts, the 2n-dimensional optimization problem can be reduced to 2n one-dimensional problems while each can be resolved by a simple heuristic search method summarized below:…”

“…In these kinds of methods, in order to realize frequency selection of different modes, a large number of capacitances and inductances must be employed, which increases the complexity of the shunts. Thus, a kind of independent modal resonant shunt was proposed in [15]. In this method, a single mode is controlled using a single transducer and a single shunt circuit.…”

Vibration Control Design for a Plate Structure with Electrorheological ATVA Using Interval Type-2 Fuzzy System

“…Due to the controllable and varied physical properties of smart materials, they are also used for living infrastructures, mechanical structures, and seismic vibration controls for decades . Smart materials and structures that possess electromechanical characteristics have been widely used for active vibration control or semi-active vibration control, such as piezoelectric damper [4][5][6][7][8], eddy current damper [9], magnetostrictive spring [10], magneto-rheological fluid (MRF) damper [11][12][13], electro-rheological fluid (ERF) damper [14][15][16][17], shape memory alloy (SMA) [18][19][20][21], and electromagnetic and piezoelectric shunt damper [22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Smart materials have one or more properties changed by the external stimuli, such as temperature, stress, electric field or magnetic field.…”