You are currently viewing a new version of our website. To view the old version click .

Machines, Volume 10, Issue 7

July 2022 - 105 articles

Cover Story: Short introduction: In 3D printers, the print head positioning mechanism greatly influences the manufacturing accuracy, printing speed, workspace characteristics, and total cost. Usually, for positioning on a horizontal plane, a belt routing is employed, for which two designs are known: “CoreXY” and “H-bot”. Their load distribution is considered; it is found that both have significant drawbacks. An alternative architecture (“CoreH-bot”) is introduced: this is fully planar, simplifying its design and assembly phases, and has low unbalanced torques during motion, increasing the maximum speed for a given accuracy. Its kinematics is analyzed to define the Jacobian matrix and the workspace; static and dynamic analyses are also performed. A CoreH-bot prototype is presented, showing interesting properties in terms of print speed, simplicity, and cost. View this paper
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
  • You may sign up for email alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.

Articles (105)

  • Article
  • Open Access
43 Citations
3,416 Views
21 Pages

Research on 4WS Agricultural Machine Path Tracking Algorithm Based on Fuzzy Control Pure Tracking Model

  • Chengliang Zhang,
  • Guanlei Gao,
  • Chunzhao Zhao,
  • Lei Li,
  • Changpu Li and
  • Xiyuan Chen

21 July 2022

This paper presents a path tracking algorithm based on a fuzzy control pure tracking model for autonomous navigation of 4WS agricultural machines. The aim of this research is to implement path tracking for unmanned 4WS agricultural machinery and to s...

  • Article
  • Open Access
13 Citations
3,579 Views
20 Pages

Systematic Design of a 3-DOF Dual-Segment Continuum Robot for In Situ Maintenance in Nuclear Power Plants

  • Guoxin Li,
  • Jingjun Yu,
  • Dailin Dong,
  • Jie Pan,
  • Haoran Wu,
  • Shengge Cao,
  • Xu Pei,
  • Xindong Huang and
  • Jianqing Yi

21 July 2022

In situ maintenance works for nuclear power plants are highly beneficial as they can significantly reduce the current maintenance cycle and cost. However, removing absorber balls in a constrained environment through an inspection port is fairly chall...

  • Article
  • Open Access
13 Citations
2,989 Views
24 Pages

Flatness-Based Active Disturbance Rejection Control for a PVTOL Aircraft System with an Inverted Pendular Load

  • Cesar Alejandro Villaseñor Rios,
  • Alberto Luviano-Juárez,
  • Norma Beatriz Lozada-Castillo,
  • Blanca Esther Carvajal-Gámez,
  • Dante Mújica-Vargas and
  • Octavio Gutiérrez-Frías

21 July 2022

This paper presents a systematic procedure for the control scheme design for a PVTOL aircraft system with an inverted pendular load, which is a nonlinear underactuated system. The control scheme is based on the use of angular movement as an artificia...

  • Article
  • Open Access
5 Citations
3,886 Views
18 Pages

21 July 2022

The exploration and investigation of lunar soil can provide necessary information for human beings to understand the Moon’s geological evolution history and solar activity, and is also of great significance for human beings to search for new en...

  • Article
  • Open Access
16 Citations
2,721 Views
18 Pages

Development and Validation of a Vibration-Based Virtual Sensor for Real-Time Monitoring NOx Emissions of a Diesel Engine

  • Muhammad Yousaf Iqbal,
  • Tie Wang,
  • Guoxing Li,
  • Senxiang Li,
  • Guicheng Hu,
  • Tiantian Yang,
  • Fengshou Gu and
  • Mohammed Al-Nehari

21 July 2022

With a strong legal basis and regulatory authority, cost-effective transient emission sensors that reflect real-driving emissions are key factors for accomplishing environmental requirements. It is difficult for the existing NOx emission monitoring t...

  • Article
  • Open Access
3 Citations
2,129 Views
20 Pages

20 July 2022

Usually, the order of active disturbance rejection control (ADRC) is equal to the relative order of the plant. To improve the control performance, a robust reduced-order method for ADRC is investigated in this paper. Firstly, frequency domain analysi...

  • Review
  • Open Access
54 Citations
15,195 Views
24 Pages

20 July 2022

Human–robot interaction (HRI) is a broad research topic, which is defined as understanding, designing, developing, and evaluating the robotic system to be used with or by humans. This paper presents a survey on the control, safety, and perspect...

  • Article
  • Open Access
7 Citations
4,045 Views
23 Pages

Laboratory Device Detecting Tensile Forces in the Rope and Coefficient of Friction in the Rope Sheave Groove

  • Leopold Hrabovský,
  • Oldřich Učeň,
  • Lukáš Kudrna,
  • Daniel Čepica and
  • Karel Frydrýšek

20 July 2022

One of the possible ways to transfer the tractive power of a drive unit to the traction element is to use fibre friction. When a steel rope is used as the traction element, there is a transfer of tractive power in the groove created on the perimeter...

  • Article
  • Open Access
5 Citations
2,973 Views
21 Pages

Dynamic Simulation and Experimental Study of Electric Vehicle Motor-Gear System Based on State Space Method

  • Zhan Cao,
  • Yong Chen,
  • Guangxin Li,
  • Libin Zang,
  • Dong Wang,
  • Zizhen Qiu and
  • Guangyan Wei

20 July 2022

In the research on electric vehicle transmission vibration characteristics, the dynamic model involving a multistage gear system is still rare, especially the influences of driving motor excitation and load excitation which are not considered, and wh...

  • Article
  • Open Access
8 Citations
2,637 Views
22 Pages

19 July 2022

The use of drones to inspect transmission lines is an important task for the energy maintenance department to ensure the stability and safety of power transmission. However, the current electric power inspection is inseparable from the participation...

of 11

Get Alerted

Add your email address to receive forthcoming issues of this journal.

XFacebookLinkedIn
Machines - ISSN 2075-1702