Pneumatic Muscle Actuators

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Bioengineering Technology".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 4450

Special Issue Editors


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Department of Industrial and Information Engineering and Economy (DIIIE), University of L’Aquila, Piazzale Ernesto Pontieri 1, Monteluco di Roio, 67100 L’Aquila, Italy
Interests: industrial robots; rehabilitation robots; collaborative robotics; wearable robotics
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Guest Editor
Department of Industrial and Information Engineering and Economics, University of L’Aquila, Via G. Gronchi 18, 67100 L’Aquila, Italy
Interests: bioengineering; service robotics; man-amplifying exoskeletons; pneumatic muscle actuators; shape memory alloy actuators; microsystems
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Industrial and Information Engineering and Economics, University of L’Aquila, Via G. Gronchi 18, 67100 L’Aquila, Italy
Interests: mechatronics; soft and pneumatic muscle actuators; service robotics; agricultural robotics; bioengineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Pneumatic muscle actuators were initially conceived only for bioengineering applications. Over time, several new types have also been proposed for industrial applications, keeping some interesting characteristics unchanged: high strength/mass ratio, possibility of realization with easily available materials, ease of realization, low cost, ease of introduction into mechanical devices thanks to high tolerances assembly, respect for the environment and compliance, very useful for devices that must interact with humans.

The behavior of pneumatic muscles is strongly nonlinear due to large deformations and nonlinear characteristics of the materials they are made of. For this reason, it is difficult to predict their behavior, and many of the efforts of researchers in the past have been directed toward modeling in order to obtain tools for the sizing, prediction of functioning, life duration, and control of pneumatic muscles.

The recent development of soft actuators has led to a renewed interest of researchers in pneumatic muscles.

This Special Issue aims to collect all the most innovative contributions on the theme of pneumatic muscles and soft actuators on topics including, but not limited to, new types of actuators, new realization technologies, new realization materials, new applications, and new models for sizing, control, for the forecast of operation, and for fatigue life duration.

You may choose our Joint Special Issue in Actuators.

Dr. Pierluigi Beomonte Zobel
Dr. Francesco Durante
Dr. Michele Gabrio Antonelli
Guest Editors

Manuscript Submission Information

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Keywords

  • pneumatic muscles
  • soft actuators
  • rubber actuators
  • compliance
  • pneumatic control
  • nonlinear behavior
  • modeling

Published Papers (2 papers)

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14 pages, 3440 KiB  
Article
Gas Flow Measurement Method with Temperature Compensation for a Quasi-Isothermal Cavity
by Yan Shi, Jiaqi Chang, Qingzhen Zhang, Lijiao Liu, Yixuan Wang and Zhaohui Shi
Machines 2022, 10(3), 178; https://doi.org/10.3390/machines10030178 - 28 Feb 2022
Cited by 4 | Viewed by 1889
Abstract
Pneumatic transmission is a technology that uses compressed air as a power source to drive and control various mechanical equipment to realize the mechanization and automation of production processes. With the development of industrial mechanization and automation, pneumatic technology, represented by pneumatic muscle, [...] Read more.
Pneumatic transmission is a technology that uses compressed air as a power source to drive and control various mechanical equipment to realize the mechanization and automation of production processes. With the development of industrial mechanization and automation, pneumatic technology, represented by pneumatic muscle, is increasingly becoming more widely used in various fields. The current standards for research are more complex for the measurement of flow without a flowmeter, some of them do not consider the influence of temperature change on flow measurement, and some of them are simplified as adiabatic or isothermal models, which are inaccurate measurement methods in actual practical application. This paper describes a method to determine flow rate by measuring the pressure change in the process of gas tank inflation. This study used the method of temperature compensation to eliminate the influence of temperature in the isothermal formula. The measurement structure was simple and the calculation was accurate, which has a certain practical significance. Based on this method, charging experiments were carried out with a gas tank that had a volume of 3 L or 5 L with or without copper wire filling, and the experimental results were used in the processed research. The temperature compensation parameters were identified with or without an isothermal environment and in different sizes of tanks. This method identified the different parameters of the 5 L tank and 3 L tank. Finally, the flow compensation was completed for the gas tank filled with copper wire. After verification, the results of the quasi-isothermal calculation formula and temperature compensation formula were close to those measured by a high-precision flow sensor in the experiment. The method introduced in this study is a novel flow calculation method that is simple in structure and accurate in calculation compared with the conventional isothermal calculation method; furthermore, it can be used in real world situations without the need for a high-precision flow sensor. Full article
(This article belongs to the Special Issue Pneumatic Muscle Actuators)
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17 pages, 64596 KiB  
Article
Development of a Novel Pneumatic Oscillator for the Tissue Paper Industry
by Michele Gabrio Antonelli, Pierluigi Beomonte Zobel, Massimiliano Centofanti and Stefano Colaiuda
Machines 2021, 9(11), 261; https://doi.org/10.3390/machines9110261 - 30 Oct 2021
Cited by 1 | Viewed by 2079
Abstract
The final quality of tissue paper depends on the parameters of the continuous transformation process and maintenance of rolls of a tissue paper machine. For a better quality, outer surfaces of the rolls must always be clean, and their roughness should be maintained [...] Read more.
The final quality of tissue paper depends on the parameters of the continuous transformation process and maintenance of rolls of a tissue paper machine. For a better quality, outer surfaces of the rolls must always be clean, and their roughness should be maintained in the same way. A Doctor Blade provides for such requirements. Our work is focused on the development of a pneumatic oscillator that moves a Doctor Blade in order to scrape the outer surfaces of the rolls. It is based on a low-friction double-effect cylinder with a through-rod. The integration of two limit switch valves, one for each head of the cylinder, and a smart pneumatic circuit to obtain a very low speed of the piston at constant load, represents the novelty of the proposed device. The piston of the cylinder allows for alternatively switching the limit switches that command the 5/2 air-operated pilot valve of the cylinder. The oscillator’s design, pneumatic circuit, and working principle are detailed. Experimental tests on the conceived limit switch and on the first prototype of the pneumatic oscillator validated the effectiveness of the proposed solution, the technical feasibility of the device, and the absence of stick-slip during the oscillatory motion at low speed. Full article
(This article belongs to the Special Issue Pneumatic Muscle Actuators)
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