An efficient model of an equipment loaded panel for active control design studies

Area of Science:

• Aerospace Engineering
• Mechanical Engineering
• Structural Dynamics

Background:

• Satellite structures are susceptible to vibrations from various sources.
• Effective vibration control is crucial for satellite performance and longevity.
• Realistic and efficient structural models are needed for investigating control strategies.

Purpose of the Study:

• To develop a realistic and efficient structural model for satellite vibrations.
• To investigate and compare the effectiveness of different active control strategies.
• To minimize vibration displacement at specific locations in satellite structures.

Main Methods:

• Developed a modeling technique using the Lagrange-Rayleigh-Ritz (LRR) approach for an equipment-loaded panel.
• Incorporated active/passive suspensions and resonators to model mounted equipment dynamics.
• Utilized piezoelectric patches for active vibration control and verified the LRR model against finite-element analysis.

Main Results:

• A validated LRR structural model was developed for simulating satellite panel dynamics.
• Initial studies compared the effectiveness of control strategies applied at the source, path, or receiver.
• Demonstrated the feasibility of active vibration control using piezoelectric patches.

Conclusions:

• The developed LRR model provides an efficient tool for analyzing satellite structure vibrations.
• Active control strategies can effectively reduce vibration levels in satellite equipment-loaded panels.
• Further research can optimize control strategies for different satellite components and mission requirements.