Nonlinear Active Vibration Control

Dear Colleagues,

Vibration control can be significant in the optoelectronic performance of sophisticated engineering structures or machines, as it helps in establishing high stability, high pointing accuracy, and high positioning accuracy. The active control of vibration in mechanical systems is an essential and inseparable approach to micro- or nanovibration suppression research. The conventional actuators have an inherently lower limit operating frequency of 5 Hz. When the frequency is close to the lower limit, the dynamic characteristics of the actuator are greatly degraded, and the actuating force required for low-frequency vibration is often greater, resulting in the low efficiency of the vibration control within the 5-10 Hz frequency band. Active vibration control has limited solutions for a vibration below 5 Hz. For active vibration control, the vibration control lower than 5 Hz is named ultra-low-frequency active vibration control. Ultra-low-frequency vibration is very common in sophisticated engineering structures and machines. To improve the actuation efficiency, a nonlinear structure can be applied instead of a linear spring as an effective solution. Nonlinear vibration control is expected to overcome the shortcomings of traditional linear vibration control, such as low efficiency and high cost, and realize more efficient vibration suppression, which is of great engineering significance.

The Special Issue aims to collect research articles on the usage of nonlinearity to improve the performance of active vibration control. We are pleased to invite the research community to submit review or regular research papers on, but not limited to, the following relevant topics related to “Nonlinear Active Vibration Control”:

• Nonlinear vibration theory, dynamic modelling, and analysis methods;
• Electromechanical conversion mechanisms and smart materials;
• Passive vibration control approach: isolation, absorption, and damping;
• Piezoelectric/electromagnetic actuators and systems;
• Active metamaterials for vibration control;
• Integrated active and passive vibration control.

Dr. Zeqi Lu
Prof. Dr. Hailing Fu
Dr. Nan Wu
Guest Editors

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