Development and Application of Advanced Precision Vibration Isolation Systems

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E:Engineering and Technology".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1478

Special Issue Editors

School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
Interests: stewart platforms; vibration isolation; negative stiffness; active control; feedback control; feedforward control; sky-hook damping; piezoelectric actuator (PZT); voice coil motor (VCM); adaptive control algorithm; least mean square (LMS) algorithm; recursive least squares (RLS) algorithm; integral force feedback (IFF) algorithm

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Guest Editor
The College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China
Interests: vibration isolation; negative stiffness; electromagnetic; Youla-parameterized control; metamaterial; sky-hook damping

Special Issue Information

Dear Colleagues,

Advanced precision vibration isolation systems are key technological solutions aimed at mitigating the vibration disturbances generated by machinery during operation, thereby minimizing their impact on the surrounding environment and other equipment. With advancements in technology and the continuous development of industrial sectors, the demand for high-precision machining, testing, and instruments has been increasing, highlighting the importance of developing and implementing advanced precision vibration isolation systems. These cutting-edge systems utilize advanced materials, design principles, and control algorithms to effectively minimize the transmission and diffusion of mechanical vibrations. They are widely applied in precision machining equipment, optical instruments, semiconductor manufacturing devices, etc., to enhance equipment stability and operation. However, to fully optimize the performance of precision vibration isolation systems, researchers and engineers must overcome significant challenges, such as the coexistence of low-frequency resonance and high-frequency isolation, and the dual-control dilemma between high damping and strong stability. Therefore, this Special Issue aims to showcase research papers focusing on the development of new approaches in precision vibration isolation, including new materials, novel structural designs, structural designs for biomimetic vibration reduction, and active vibration control algorithms.

We look forward to receiving your contributions.

Dr. Min Wang
Dr. Jinglei Zhao
Guest Editors

Manuscript Submission Information

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Keywords

  • precision vibration isolation
  • active control
  • negative stiffness
  • multiple degrees of freedom
  • feedback control
  • feedforward control

Published Papers (2 papers)

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Research

20 pages, 5075 KiB  
Article
Study of the Extremely Low-Frequency Noise Characteristics of a Micro-Thrust Measurement Platform
by Liexiao Dong, Shixu Lu, Luxiang Xu, Ning Guo, Mingshan Wu, Shengtao Liang and Jianfei Long
Micromachines 2024, 15(4), 508; https://doi.org/10.3390/mi15040508 - 8 Apr 2024
Viewed by 526
Abstract
The critical structural parameters are optimized and studied using the numerical simulation method to improve the resolution and stability of the Micro-Thrust Measurement Platform (MTMP). Under two different ground random vibration environments, the parameters, such as pivot thickness, pendulum rod length, and pivot [...] Read more.
The critical structural parameters are optimized and studied using the numerical simulation method to improve the resolution and stability of the Micro-Thrust Measurement Platform (MTMP). Under two different ground random vibration environments, the parameters, such as pivot thickness, pendulum rod length, and pivot structure, are focused on analyzing the influence of the system’s resolution and stability. The results show that when the thickness of the pivot is 0.04 mm or 0.2 mm, and the pendulum rod length is 2 m, the effect of ground random vibration on the MTMP is minimized. At 0.1 mHz, it can reach 0.0057 μN/Hz. In the series double-pivot structure, an appropriate increase in the distance between the sheets can further optimize the above conclusions. The results and analysis within this study can provide support for the engineering design of the MTMP. Full article
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17 pages, 9946 KiB  
Article
Sensor-Fusion-Based Simultaneous Positioning and Vibration Suppression Method for a Three-Degrees-of-Freedom Isolator
by Jing Wang, Lei Wang, Peng Jin, Zhen Zhang, Pengxuan Li and Ritao Xiao
Micromachines 2024, 15(3), 402; https://doi.org/10.3390/mi15030402 - 16 Mar 2024
Viewed by 671
Abstract
For vibration isolation systems, vibration suppression and platform positioning are both important. Since absolute velocity feedback causes difficulty in achieving positioning while suppressing vibration, an H∞ control strategy based on sensor fusion feedback is proposed in this paper. The signals of inertial and [...] Read more.
For vibration isolation systems, vibration suppression and platform positioning are both important. Since absolute velocity feedback causes difficulty in achieving positioning while suppressing vibration, an H∞ control strategy based on sensor fusion feedback is proposed in this paper. The signals of inertial and displacement sensors are fused through a pair of complementary filters. Thus, active control based on the fusion signal could concurrently achieve vibration and position control since it is a displacement signal. In addition, the obtained fusion signals have a lower noise level. In this way, simultaneous positioning and vibration suppression can be established using the sensor fusion strategy. On this basis, in order to obtain an optimal H∞ controller, system damping can be maximized by using the performance weight function to attenuate noise; the system bandwidth is determined by the uncertainty weight function, which can avoid the effect of high-frequency modes of the system. The effectiveness of the proposed strategy is verified by comparing it with the conventional absolute velocity feedback strategy on a 3-DOF isolator. Full article
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