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Actuators
Special Issues
Recent Developments in Precision Actuation Technologies
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Recent Developments in Precision Actuation Technologies

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

Deadline for manuscript submissions: 31 May 2024 | Viewed by 3939

Special Issue Editors

Prof. Dr. Bin-tang Yang

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Guest Editor
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: smart materials, structures and systems; precision and mini/micro actuation technologies; active vibration control and the equipment design
Dr. Yikun Yang

E-Mail
Guest Editor
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: smart materials, structures and systems; precision actuators and sensors; active vibration control and adaptive nonlinear control
Dr. Xiaoqing Sun

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Donghua University, Shanghai 201620, China
Interests: smart materials; compliant mechanism; precision actuation technologies; active vibration control and compliant superstructure

Special Issue Information

Dear Colleagues,

Precision actuation technologies are vital in many fields of precision engineering, such as precision machining, active control of micro-vibration, surgical robots, etc. One of the main components of precision actuation technologies is precision actuators. Actuators based on smart materials have attracted the attention of a large number of researchers in recent years. These materials include piezoelectric materials, magnetostrictive materials, shape memory alloys, dielectric materials, etc. Another of the main components of precision actuation technologies is control methods. Smart material actuators often have strong nonlinearity, so it is necessary to study effective control methods to achieve precise actuation. Research into new precision actuators, precision actuation control methods and applications of precision actuation technology is still very active. This Special Issue aims to collect original papers on various types of precision actuation mechanisms, actuator design, control methods and applications, not limited to specific application areas.

Prof. Dr. Bin-tang Yang
Dr. Yikun Yang
Dr. Xiaoqing Sun
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

  • actuator
  • smart material
  • actuator design
  • actuator application
  • actuator control
  • active vibration control

Published Papers (3 papers)

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Research

22 pages, 7165 KiB  
Article
An Improved Analytical Model of a Thrust Stand with a Flexure Hinge Structure Considering Stiffness Drift and Rotation Center Offset
by Xingyu Chen, Liye Zhao, Jiawen Xu and Zhikang Liu
Actuators 2024, 13(1), 21; https://doi.org/10.3390/act13010021 - 05 Jan 2024
Viewed by 1177
Abstract
Micro-newton thrust stands are widely used in thruster ground calibration procedures for a variety of space missions. The conventional analytical model does not consider the gravity-induced extension effect and systematic error in displacement for thrust stands consisting of hanging pendulums based on flexure [...] Read more.
Micro-newton thrust stands are widely used in thruster ground calibration procedures for a variety of space missions. The conventional analytical model does not consider the gravity-induced extension effect and systematic error in displacement for thrust stands consisting of hanging pendulums based on flexure hinge structures. This paper proposes an improved analytical model of a hanging pendulum for thrust measurement, where an elliptical notched flexure hinge is the key component. A parametric model of the bending stiffness of the flexure hinge is developed. Equally, both the bending stiffness shift under the gravity-induced extension effect and the systematic error in displacement due to the assumed rotational center offset of the hinge are investigated. The presented stiffness equations for elliptical notched hinges can be degenerated into stiffness equations for circular notched as well as leaf-type hinges. The improved model aims to evaluate and highlight the influence of the two considered factors for use in thrust stand parameter design and thrust analysis. A finite element modeling solution is proposed to validate the proposed analytical model. The results show that the proposed model can quantify the hinge bending stiffness shift, which also demonstrates that even a small bending stiffness shift may introduce great uncertainty into the thrust analysis. Full article
(This article belongs to the Special Issue Recent Developments in Precision Actuation Technologies)
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26 pages, 11800 KiB  
Article
A Novel Hierarchical Recursive Nonsingular Terminal Sliding Mode Control for Inverted Pendulum
by Hiep Dai Le and Tamara Nestorović
Actuators 2023, 12(12), 462; https://doi.org/10.3390/act12120462 - 11 Dec 2023
Viewed by 1213
Abstract
This paper aims to develop a novel hierarchical recursive nonsingular terminal sliding mode controller (HRNTSMC), which is designed to stabilize the inverted pendulum (IP). In contrast to existing hierarchical sliding mode controllers (HSMC), the HRNTSMC significantly reduces the chattering problem in control input [...] Read more.
This paper aims to develop a novel hierarchical recursive nonsingular terminal sliding mode controller (HRNTSMC), which is designed to stabilize the inverted pendulum (IP). In contrast to existing hierarchical sliding mode controllers (HSMC), the HRNTSMC significantly reduces the chattering problem in control input and improves the convergence speed of errors. In the HRNTSMC design, the IP system is first decoupled into pendulum and cart subsystems. Subsequently, a recursive nonsingular terminal sliding mode controller (RNTSMC) surface is devised for each subsystem to enhance the error convergence rate and attenuate chattering effects. Following this design, the HRNTSMC surface is constructed by the linear combination of the RNTSMC surfaces. Ultimately, the control law of the HRNTSMC is synthesized using the Lyapunov theorem to ensure that the system states converge to zero within a finite time. By invoking disturbances estimation, a linear extended state observer (LESO) is developed for the IP system. To validate the effectiveness, simulation results, including comparison with a conventional hierarchical sliding mode control (CHSMC) and a hierarchical nonsingular terminal sliding mode control (HNTSMC) are presented. These results clearly showcase the excellent performance of this approach, which is characterized by its strong robustness, fast convergence, high tracking accuracy, and reduced chattering in control input. Full article
(This article belongs to the Special Issue Recent Developments in Precision Actuation Technologies)
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17 pages, 9667 KiB  
Article
Research on the Vibration Reduction Mechanism of a New Tensioning Platform with an Embedded Superstructure
by Xiaoqing Sun, Zhengyin Yang, Ju Wang, Xiusong Hou and Yikun Yang
Actuators 2023, 12(7), 279; https://doi.org/10.3390/act12070279 - 08 Jul 2023
Viewed by 1014
Abstract
Aiming at the problem of precision driving and vibration suppression for sensitive payloads on-orbit, this paper proposes a new compliant platform based on an embedded superstructure and a smart material actuator. Firstly, the main structure of the platform is designed and optimized to [...] Read more.
Aiming at the problem of precision driving and vibration suppression for sensitive payloads on-orbit, this paper proposes a new compliant platform based on an embedded superstructure and a smart material actuator. Firstly, the main structure of the platform is designed and optimized to achieve the expected indicators via the response surface method. Then, the vibration reduction mechanism of the platform with the embedded superstructure is studied by establishing an equivalent model. Following that, a four-phase superstructure is matched and designed with a compact space, and the results are verified by finite element modal analysis. Finally, both the tensioning performance and vibration reduction performance under fixed frequency harmonic disturbance are studied via transient dynamic simulation. Based on the obtained results, directions for future improvements are proposed. The relevant conclusions can provide a reference for function integration of precision tensioning and vibration suppression. Full article
(This article belongs to the Special Issue Recent Developments in Precision Actuation Technologies)
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