Experimental modal identification of smart composite structure applied to active vibration control

Rodríguez, Jonathan; Collet, Manuel; Chesné, Simon

doi:10.1088/1361-665x/ac26a6

Cited by 4 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore the dynamic analysis and vibration control of flexible spacecraft usually are based on a dynamic model that requires the identification of modal parameters. 11 Due to the gravity and air damping, the on-ground modal identification of membrane antenna structure is very difficult to perform, if not impossible. 12,13 Besides, because of the differences between ground and space environments, the modal parameters obtained by on-ground experiments may not reflect the actual state of the spacecraft.…”

Section: Introductionmentioning

confidence: 99%

Model updating and vibration control of membrane Antenna spacecraft based on on-orbit modal identification

Liu

Cai

You

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

In this paper, on-orbit modal identification of membrane antenna spacecraft is investigated. Based on the modal identification results, dynamic model of the spacecraft is updated, and a vibration controller is designed. First of all, the rigid-flexible coupling dynamic model of the membrane antenna spacecraft is established by using Lagrange equation. Then, the covariance driven stochastic subspace identification (SSI-COV) method, which only relies on output measurements of the system under ambient excitation, is adopted to identify the modal parameters. By using the modal identification results, the model updating is performed based on sensitivity analysis, and vibration controller is designed to suppress the vibration caused by attitude maneuver based on the component synthesis vibration suppression (CSVS) method. Simulation results show that the SSI-COV method can identify the modal parameters of the membrane antenna spacecraft effectively, the updated dynamic model produces obvious improvements over the original model, and the vibration suppression effect of the CSVS controller is improved significantly after model updating.

show abstract

Section: Introductionmentioning

confidence: 99%

Model updating and vibration control of membrane Antenna spacecraft based on on-orbit modal identification

Liu

Cai

You

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

Optimal placement criteria of actuators for hybrid mounting system on a non-aligned plate structure

Qiu,

Hong,

Kim

2023

Sci Rep

View full text Add to dashboard Cite

Electric motors in electric and hybrid vehicles generate mid-frequency noise and vibration. These factors cause drivers to experience discomfort while traveling. Active mounting techniques have been extensively researched and developed to effectively address this issue. The optimal placement of an active mounting system is essential for enhancing NVH performance when an active mounting system is utilized. In order to propose optimal location criteria for active paths, this paper concentrates on developing an analytical model based on both dynamic and static analysis. The secondary forces along active trajectories are mathematically determined when a structure is subjected to an excitation force. These locations are considered optimal for the active mounting system if the secondary forces are comparatively minimal. Simulations and feasibility experiments are also conducted in order to validate the proposed method. In addition, the results are compared with the case of beam structure. It has been determined through this procedure that the active path’s control performance will be enhanced if it is positioned in the optimal location and less control force is required than in the case of beam.

show abstract

Active noise control with resonant flush-mounted piezoelectric cells in the presence of airflow: Wind tunnel experiments

Rodriguez,

Ezzine,

Collet

et al. 2023

Journal of Vibration and Control

View full text Add to dashboard Cite

Methods and technologies to control the noise coming from turbulent flows impinging on outlet guide vanes in turbofan engines are tremendously needed nowadays to comply with new legislation on acoustic environment pollution. The following paper relies on preliminary research proposing a new experimental design of active noise control system to be further integrated into a jet engine outer guide vane prototype, consisting of multiple flush-mounted piezoelectric cells. Here, three active cells are placed on the bottom wall of a wind tunnel with upstream acoustic excitation generating grazing incident waves for different airflow velocities. Using a downstream microphone as an error sensor, the active system succeeds in improving the transmission loss of the sample by 2.5 dB at the target frequency (670 Hz) corresponding to the main piezo acoustic mode with airflow velocities up to 20 m.s−1. These early experimental results confirm the ability of the concept to interact with the ambient acoustics without disturbing the airflow as in passive solutions using porous materials, for instance, leading the path to future experiments with realistic turbulence generating acoustic sources on the leading edge of the vane profile.

show abstract

Experimental modal identification of smart composite structure applied to active vibration control

Cited by 4 publications

References 24 publications

Model updating and vibration control of membrane Antenna spacecraft based on on-orbit modal identification

Model updating and vibration control of membrane Antenna spacecraft based on on-orbit modal identification

Optimal placement criteria of actuators for hybrid mounting system on a non-aligned plate structure

Active noise control with resonant flush-mounted piezoelectric cells in the presence of airflow: Wind tunnel experiments

Contact Info

Product

Resources

About