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Actuators, Volume 11, Issue 8

August 2022 - 37 articles

Cover Story: In a narrow surgical space, flexible surgical instruments offer advantages over rigid counterparts in terms of operational dexterity. Therefore, a flexible surgical instrument was designed in this study to realize dexterous motion using multiple segments in a series under tendon-driven operation. The forward and inverse kinematics of the instrument were solved using the geometrical method and the Newton–Raphson method. The experiments showed that the proposed method for solving flexible instrument kinematics had high precision, a unique solution, and high speed. The instrument can be well controlled to perform refined operations. In addition, the instrument could flexibly reach the designated position in a narrow and long operating space. Finally, it was verified that the prototype device had a certain load capacity. View this paper
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Articles (37)

  • Communication
  • Open Access
4 Citations
2,113 Views
17 Pages

22 August 2022

This paper proposes a novel fault-tolerant control method based on the integral sliding mode technique for unmatched uncertain linear systems with external perturbations. Differently from the existing works, the uncertainties under consideration have...

  • Article
  • Open Access
3 Citations
3,176 Views
22 Pages

22 August 2022

Pneumatic actuators demonstrate various nonlinear and uncertain behavior, and as a result, precise control of such actuators with model-based control schemes is challenging. The Iterative Learning Control (ILC) algorithm is a model-free control metho...

  • Article
  • Open Access
6 Citations
2,495 Views
23 Pages

Friction Torque Analysis and Verification of Planetary Thread Roller Bearing

  • Lu Liu,
  • Congcong Zhang,
  • Yanqing Guo,
  • Yuxiang Bian,
  • Yongling Fu,
  • Yifan Ning and
  • Jinjie Zhou

21 August 2022

A planetary thread roller bearing (PTRB) is a state-of-the-art component in electromechanical actuators (EMA) due to its high load-bearing capacity and small volume. The study of the PTRB is a leading task in the domain of EMA application. In this st...

  • Article
  • Open Access
6 Citations
3,021 Views
17 Pages

21 August 2022

This paper covers a new actuation and deflection controller configuration for high-aspect-ratio wings used on subsonic drones, missiles, and munitions. Current approaches to the flight control of these aircraft have unearthed challenges with friction...

  • Article
  • Open Access
6 Citations
3,608 Views
14 Pages

18 August 2022

Rail transit plays a significant role in the operation of an efficient and effective urban public transportation system. Safety and capacity are some of the most crucial objectives in railway operations. The communication-based train control (CBTC) s...

  • Article
  • Open Access
5 Citations
2,763 Views
15 Pages

17 August 2022

This paper introduces a novel dual-drive micro-feeding system (DDMS) to obtain precise micro-feed synthetic motion by rotating both the screw and the nut, which eliminates the effects of nonlinear friction at low micro-feeding speeds and has good res...

  • Article
  • Open Access
8 Citations
2,549 Views
21 Pages

16 August 2022

Eccentric structures will have torsional vibrations subjected to earthquakes, which can accelerate the damage of structures, and even become the main cause of building collapse. Semi-active control systems equipped with multiple magnetorheological (M...

  • Article
  • Open Access
2,261 Views
21 Pages

16 August 2022

This paper aims to further the understanding of the mixing process of in-line twin synthetic jets (SJs) and their impact in the near-wall region in a flat-plate laminar boundary layer. A numerical study has been carried out, in which colored fluid pa...

  • Article
  • Open Access
1 Citations
2,576 Views
16 Pages

Switching Model Predictive Control for Thin McKibben Muscle Servo Actuator

  • Mohd Akmal Mhd Yusoff,
  • Ahmad Athif Mohd Faudzi,
  • Mohd Shukry Hassan Basri,
  • Mohd Fuaad Rahmat,
  • Mohd Ibrahim Shapiai and
  • Shahrol Mohamaddan

15 August 2022

Dynamic characteristics and control of thin McKibben muscle (TMM) have not yet been fully investigated, especially on the translational antagonistic pair system. Therefore, the objective of this study is to propose a Switching Model Predictive Contro...

  • Article
  • Open Access
12 Citations
3,407 Views
24 Pages

10 August 2022

An innovative wearable upper-limb power-assist exoskeleton system (UPES) was designed for laborers to improve work efficiency and reduce the risk of musculoskeletal disorders. This novel wearable UPES consists of four joints, each comprising a single...

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Actuators - ISSN 2076-0825Creative Common CC BY license