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Actuators
Special Issues
Nonlinear Active Vibration Control
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Nonlinear Active Vibration Control

A special issue of Actuators (ISSN 2076-0825). This special issue belongs to the section "Control Systems".

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 6199

Special Issue Editors

Dr. Zeqi Lu

E-Mail Website
Guest Editor
School of Mechanics and Engineering Sciences, Shanghai University, Shanghai, China
Interests: passive and active vibration control; nonlinear vibration; vibration isolation; dynamic absorption; energy harvesting; nonlinear energy sink
Prof. Dr. Hailing Fu

E-Mail Website
Guest Editor
School of Automation, Beijing Institute of Technology, Beijing 100811, China
Interests: smart wearable systems and control; smart multi-agent systems; autonomous sensor networks
Special Issues, Collections and Topics in MDPI journals
Dr. Nan Wu

E-Mail Website
Guest Editor
Department of Mechanical Engineering, The University of Manitoba, Winnipeg, MB R3T 5V6, Canada
Interests: solid mechanics; mechanical vibration; smart materials and structures; energy harvesting; structural health monitoring
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

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

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Actuators is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • active vibration control
  • nonlinear vibration
  • vibration isolation
  • vibration absorption
  • electromagnetic actuator
  • piezoelectric actuator
  • active control algorithms

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

23 pages, 1136 KiB  
Article
A Reasoned Attempt to Mitigate Vibrations in Nonlinear Flexible Systems Influenced by Tractive–Elastic Rolling Contact Friction Through Input Shaping: A Case Study on a Trolley–Pipe Benchmark Transport System
by Gerardo Peláez, Pablo Izquierdo, Gustavo Peláez and Higinio Rubio
Actuators 2025, 14(2), 97; https://doi.org/10.3390/act14020097 - 17 Feb 2025
Viewed by 332
Abstract
The well-regarded feedforward control strategy known as Input Shaping is aimed at improving the dynamic response of flexible mechanical systems by reducing overshoot and residual vibration amplitude. Its validity has been confirmed by numerous studies dealing with linear system dynamics. However, its application [...] Read more.
The well-regarded feedforward control strategy known as Input Shaping is aimed at improving the dynamic response of flexible mechanical systems by reducing overshoot and residual vibration amplitude. Its validity has been confirmed by numerous studies dealing with linear system dynamics. However, its application in nonlinear systems, particularly those influenced by tractive–elastic rolling contact friction, remains a challenging and less explored open research area. This paper investigates whether Input Shaping, without tractive rolling friction compensation, can effectively mitigate vibrations in a trolley–pipe benchmark transport system. In this system, the pipe is modeled as a rolling disc attached to the trolley by a spring at its center of mass, while the trolley itself is connected to a guiding body frame by an additional spring acting as a proportional control. The natural frequencies of the system are analytically estimated and numerically verified from a corresponding well-suited multibody model. Thus, tailored two-mode shapers are designed based on simultaneous constraints and the convolution sum, respectively. Through multibody simulations, this study evaluates the performance of Input Shaping under tractive–elastic rolling contact friction conditions. The findings highlight both the potential and limitations of this control method in addressing nonlinear mechanical systems influenced by tractive–elastic rolling contact friction. Full article
(This article belongs to the Special Issue Nonlinear Active Vibration Control)
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15 pages, 15889 KiB  
Article
Slewing and Active Vibration Control of a Flexible Single-Link Manipulator
by Dae W. Kim, Moon K. Kwak, Soo-Min Kim and Brian F. Feeny
Actuators 2025, 14(2), 43; https://doi.org/10.3390/act14020043 - 22 Jan 2025
Cited by 1 | Viewed by 555
Abstract
This study focuses on the slewing and vibration suppression of flexible single-link manipulators. While extensive research has been conducted on such systems, few studies have experimentally validated their theoretical models. To address this gap, an experimental setup is developed, connecting the flexible link [...] Read more.
This study focuses on the slewing and vibration suppression of flexible single-link manipulators. While extensive research has been conducted on such systems, few studies have experimentally validated their theoretical models. To address this gap, an experimental setup is developed, connecting the flexible link to a zero-backlash worm gear and further attaching it to the rotor shaft of the AC servomotor. The worm gear’s characteristics isolate the link’s vibrations from the rotor’s angular motion, enabling independent design of the vibration controller and slewing control. This approach facilitates simultaneous accurate trajectory tracking and vibration suppression. An active vibration control algorithm is implemented based on an accurate dynamic model. This research encompasses dynamic modeling, slewing control, and vibration control for the system. Theoretical predictions are compared with experimental results to validate both the theoretical model and the proposed vibration control algorithm. Full article
(This article belongs to the Special Issue Nonlinear Active Vibration Control)
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18 pages, 7199 KiB  
Article
Study on Dynamics of Overrunning Spring Clutches and Suppression Methods for Their Abnormal Noise
by Jie Zhou, Zhehang Qiu, Huijuan Zhang and Jianming Zhan
Actuators 2024, 13(5), 165; https://doi.org/10.3390/act13050165 - 1 May 2024
Cited by 1 | Viewed by 1538
Abstract
Overrunning spring clutches are widely used as essential transmission devices, and the occurrence of abnormal noise can lead to a decline in their performance. This study investigates the dynamic aspects of abnormal noise in engineering applications, including its causes, influencing factors, and suppression [...] Read more.
Overrunning spring clutches are widely used as essential transmission devices, and the occurrence of abnormal noise can lead to a decline in their performance. This study investigates the dynamic aspects of abnormal noise in engineering applications, including its causes, influencing factors, and suppression methods. Audio processing algorithms are employed to analyze the audio associated with abnormal noise, and the Fourier Motion Blur algorithm is applied to process video images of the springs. By combining the motion blur curve with the noise spectrum curve, the source of the abnormal noise is identified as friction-induced vibrations in the spring. Theoretical modeling and calculations are carried out from a dynamic perspective to validate that the phenomenon of abnormal noise in the clutch is a result of self-excited friction vibration caused by the stick–slip phenomenon. Based on theoretical analysis and practical engineering, surface texturing is added to the center shaft of the spring seat, optimizing the system as an overdamped system to suppress self-vibration. Utilizing CFD simulation analysis, the simulation results are used to improve the texturing parameters and further optimize the texturing shape, resulting in an optimal parallelogram surface texture structure. Experimental validation confirms that the improved overrunning spring clutch completely eliminates abnormal noise during overrunning operation. Therefore, this paper contributes to the understanding of the dynamic issues associated with abnormal noise in overrunning spring clutches, confirming that the mechanism for abnormal noise generation is friction-induced self-excitation vibration, and demonstrating that surface texture optimization methods effectively suppress the occurrence of abnormal noise. Full article
(This article belongs to the Special Issue Nonlinear Active Vibration Control)
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18 pages, 5930 KiB  
Communication
Negative-Stiffness Structure Vibration-Isolation Design and Impedance Control for a Lower Limb Exoskeleton Robot
by Yaohui Sun, Jiangping Hu and Rui Huang
Actuators 2023, 12(4), 147; https://doi.org/10.3390/act12040147 - 30 Mar 2023
Cited by 8 | Viewed by 2731
Abstract
The series elastic actuator (SEA) is generally used as the torque source of the exoskeleton robot for human–robot interaction (HRI). In this paper, an impedance control method for lower limb exoskeleton robots driven by SEA is presented. First, considering the low-frequency vibrations generated [...] Read more.
The series elastic actuator (SEA) is generally used as the torque source of the exoskeleton robot for human–robot interaction (HRI). In this paper, an impedance control method for lower limb exoskeleton robots driven by SEA is presented. First, considering the low-frequency vibrations generated by the lower limb exoskeleton robot during walking, the displacement generated by the robot is regarded as an external disturbance to the SEA motor. An SEA structure with negative stiffness structure (NSS) is designed to achieve vibration isolation in the low-frequency excitation region. Second, the dynamics model of the SEA-driven exoskeleton robot system is proposed, and the impedance control strategy is integrated into the proposed system. In addition, the numerical responses of the vibration-isolation system in both time and frequency domains are given, and the designed NSS is designed to achieve vibration isolation. The amplitude-frequency responses of the system are obtained. The harmonic balance (HB) method is used to give the analytical solution of the designed negative-stiffness isolation system, and the effects of different characteristic parameters on the isolation system are analyzed. Moreover, the stability of the SEA-driven exoskeleton impedance control system is demonstrated using the Lyapunov method. Finally, numerical simulations are carried out in order to show the effectiveness of the control method. Full article
(This article belongs to the Special Issue Nonlinear Active Vibration Control)
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