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Actuators, Volume 13, Issue 2

February 2024 - 36 articles

Cover Story: Accurate trajectory tracking is vital for mobile robots, especially during high-speed movements where hardware delays can lead to instability. Smith predictor controllers that deal with delays are used in such delayed processes. This paper focuses on accurately positioning a mobile robot on terrain with an unknown slope, where disturbance torques induce steady-state errors in actuators. Due to the actuators' integrating plus time delay nature, SPs fail to remove these disturbances. A modified control scheme is proposed to address this, ensuring zero steady-state error. Simulations show that the proposed scheme outperforms modified SPs in swiftly eliminating steady-state errors. Experimental validation on a low-cost mobile robot further confirms the approach's effectiveness. View this paper
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Articles (36)

  • Article
  • Open Access
8 Citations
3,379 Views
16 Pages

Vibration Control of Car Body and Wheel Motions for In-Wheel Motor Vehicles Using Road Type Classification

  • Young-Jun Kim,
  • Youngil Sohn,
  • Sehyun Chang,
  • Seung-Bok Choi and
  • Jong-Seok Oh

18 February 2024

In-wheel motor vehicles are gaining attention as a new type of electric vehicle due to their efficient power units located inside each wheel hub. However, they are more susceptible to wheel resonance due to the increase in unsprung mass caused by the...

  • Article
  • Open Access
2 Citations
3,728 Views
17 Pages

17 February 2024

To address the challenges of sinking, imbalance, and complex control systems faced by hexapod robots walking on lunar soil, this study develops an umbrella-shaped foot lunar exploration hexapod robot. The overall structure of the robot is designed to...

  • Article
  • Open Access
2 Citations
2,662 Views
18 Pages

16 February 2024

This study used real-time image processing to realize obstacle avoidance and indoor navigation with an omnidirectional wheeled mobile robot (WMR). The distance between an obstacle and the WMR was obtained using a depth camera. Real-time images were u...

  • Article
  • Open Access
9 Citations
3,604 Views
33 Pages

16 February 2024

In order to achieve multi-objective chassis coordination control for 4WID-4WIS (four-wheel independent drive–four-wheel independent steering) electric vehicles, this paper proposes a coordinated control strategy based on the extension dynamic s...

  • Article
  • Open Access
3,535 Views
21 Pages

14 February 2024

As a crucial component of rotor systems, tension and torsion (TT) straps, recognized for their compact structure, have been adopted in advanced helicopters such as the SB > 1, EC145, and Mi-26. This paper presents an analytical investigation and e...

  • Article
  • Open Access
3 Citations
2,891 Views
21 Pages

14 February 2024

Aiming to address problems such as low sampling success rate and long computation time in the motion planning of a dual-arm cooperative system with multiple constraints, this paper proposes an Informed-Bi-Quick RRT* algorithm based on offline samplin...

  • Article
  • Open Access
12 Citations
3,818 Views
19 Pages

14 February 2024

Since the traditional transformer fault diagnosis method based on dissolved gas analysis (DGA) is challenging to meet today’s engineering needs, this paper proposes a multi-model fusion transformer fault diagnosis method based on TimesNet and I...

  • Article
  • Open Access
2,230 Views
27 Pages

A Combined Fractional Order Repetitive Controller and Dynamic Gain Regulator for Speed Ripple Suppression in PMSM Drives

  • Haohao Guo,
  • Fengkui Zhang,
  • Qiaofen Zhang,
  • Yancheng Liu,
  • Tianxiang Xiang and
  • Jintong Xing

14 February 2024

Repetitive control (RC) has been widely used in many fields due to its excellent ability to suppress periodic disturbances. However, when the permanent magnet synchronous motor (PMSM) operates at variable speeds, the speed loop sampling frequency is...

  • Article
  • Open Access
5 Citations
2,501 Views
21 Pages

Prediction of Surface Topography in Robotic Ball-End Milling Considering Tool Vibration

  • Jinyu Liu,
  • Yuqin Niu,
  • Yiyang Zhao,
  • Lin Zhang and
  • Yanzheng Zhao

14 February 2024

Because of their low cost, large workspace, and high flexibility, industrial robots have recently received significant attention in large-scale part machining. However, due to the stiffness limitations in robot joints and links, industrial robots are...

  • Article
  • Open Access
7 Citations
1,975 Views
21 Pages

13 February 2024

This paper proposes a sampled-data fuzzy controller design technique for an autonomous underwater vehicle (AUV) depth system represented by an interval type-2 (IT-2) fuzzy model, considering input saturation. In the Takagi–Sugeno (T–S) fu...

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Actuators - ISSN 2076-0825