Actuator Design and Control Strategy Development for Vibration Control in Precision Engineering

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

Deadline for manuscript submissions: closed (15 December 2023) | Viewed by 2229

Special Issue Editors

Mechanical Engineering and Robotics, Active Structures Laboratory, Department of Control Engineering and System Analysis, Université Libre de Bruxelles, 50 Av. F.D.Roosevelt CP165/55, B-1050 Brussels, Belgium
Interests: structural dynamics; vibration control; large space structures; adaptive optics; flapping wing robots
Special Issues, Collections and Topics in MDPI journals
ASML, Eindhoven, The Netherlands
Interests: vibration control and damping; piezoelectric and electromagnetic transducers; precision mechatronics
Institute of Aerospace Science and Technology, School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
Interests: adaptive optics; active optics; vibration control; precision mechanics; mechatronics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Vibration control is essential for most engineering applications, such as civil and aerospace structures, astronomical and physics instruments, and ultra-precise industrial machines. Either passive or active, vibration control is mostly aimed at increasing the structural damping of the controlled structures, or isolating the vibration propagation from disturbance sources to sensitive payloads and instruments. While passive vibration control strategies employ passive elements, active vibration control strategies rely on the mechatronic architecture (e.g., layout of sensors and actuators) and the type and quality of the actuation and sensing hardware. For many years, smart materials, such as piezoelectric/electrostrictive materials, magnetostrictive materials, shape memory alloys, and piezoelectric/electrostrictive materials, have been used as sensors and actuators in several applications such as precision motion control, active vibration damping, and shock absorption. The research into the applications of actuator design and control strategy development for vibration control is constantly being updated.

In this Special Issue, we aim to collect a coherent ensemble of original articles and reviews emphasizing the following topics:

  • Design of active actuators in damping and isolation applications;
  • Vibration control of aerospace structures;
  • Vibration damping and isolation in precision machining;
  • Novel control strategy design for active vibration suppression;
  • Application of smart materials in vibration control;
  • Active vibration control in presence of structural uncertainties.

Prof. Dr. André Preumont
Dr. Bilal Mokrani
Dr. Kainan Wang
Guest Editors

Manuscript Submission Information

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Keywords

  • precision actuator
  • vibration control
  • vibration damping and isolation
  • smart materials
  • actuator design
  • control strategy development

Published Papers (1 paper)

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25 pages, 4464 KiB  
Tutorial
Active Damping, Vibration Isolation, and Shape Control of Space Structures: A Tutorial
by André Preumont
Actuators 2023, 12(3), 122; https://doi.org/10.3390/act12030122 - 14 Mar 2023
Cited by 5 | Viewed by 1597
Abstract
This tutorial reviews the author’s contributions to the active control of precision space structures over the past 35 years. It is based on the Santini lecture presented at the IAC-2022 Astronautical Congress in Paris in September 2022. The first part is devoted to [...] Read more.
This tutorial reviews the author’s contributions to the active control of precision space structures over the past 35 years. It is based on the Santini lecture presented at the IAC-2022 Astronautical Congress in Paris in September 2022. The first part is devoted to the active damping of space trusses with an emphasis on robustness. Guaranteed stability is achieved by using decentralized collocated actuator–sensor pairs. The so-called integral force feedback (IFF) is simple, robust, and effective, and the performances can be predicted easily with simple formulae based on modal analyses. These predictions have been confirmed by numerous experiments. The damping strategy for trusses has been extended to cable structures, and also confirmed experimentally. The second part addresses the problem of vibration isolation: isolating a sensitive payload from the vibration induced by the spacecraft (i.e., the unbalanced mass of attitude control reaction wheels and gyros). A six-axis isolator based on a Gough–Stewart platform is discussed; once again, the approach emphasizes robustness. Two different solutions are presented: The first one (active isolation) uses a decentralized controller with collocated pairs of the actuator and force sensor, with IFF control. It is demonstrated that this special implementation of the skyhook, unlike the classical one, has guaranteed stability, even if the two substructures it connects are flexible (typical of large space structures). A second approach (passive) discusses an electromagnetic implementation of the relaxation isolator where the classical dash-pot of the linear damper is substituted by a Maxwell unit, leading to an asymptotic decay rate of −40 dB/decade, similar to the skyhook (although much simpler in terms of electronics). The third part of the lecture summarizes more recent work done on the control of flexible mirrors: (i) flat mirrors for adaptive optics (AO) controlled by an array of piezoelectric ceramic (PZT) actuators and (ii) spherical thin shell polymer reflectors controlled by an array of piezoelectric polymer actuators (PVDF-TrFE) aimed at being deployed in space. Full article
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