Theoretical Analysis and Experimental Study of Active and Passive Control of a Double-plated Structure with Inner Fluid
In order to control the vibration of the double-plated structure with inner fluid,the analytical model of this structure is established based on the improved Fourier Series method.The effect of the damping layer of the coating is considered by using the equivalent method.The correctness of the analytical method is verified by the finite element method.The FxLMS algorithm is introduced and applied to the active vibration control of the double-plate structure.Based on the presented analytical method,the transfer function of each channel is obtained.The algorithm is simulated by MATLAB,and a good control result is achieved,which provides a reference for the verification of the control effect of the algorithm.Then,vibration control tests of the double-plate structure are carried out,and the vibration acceleration levels of the structure before and after the control are compared.It is found that the structure with a coating damping layer has a more obvious vibration reduction effect in mid-high frequency range.For the active control with single-channel,a good effect is observed at 135 Hz frequency.The total level of vibration acceleration(10-3 000 Hz)of the lower plate of the structure under the active and passive control is reduced by 6.61 dB,which verifies the effectiveness of the control measures.
vibration and waveimproved Fourier series methoddouble-plated structurepassive controlactive controlFxLMS algorithm
国家科技期刊平台
NSTL
万方数据
