Induction heating for a silicone / ethanol composite actuator

Kapłon, Tomasz; Lindner, Tymoteusz; Wyrwał, Daniel

doi:10.1109/msm49833.2020.9202227

Cited by 4 publications

(5 citation statements)

References 12 publications

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“…One of the main advantages of this solution is low cost and the simplicity of control. The use of induction heating through a metal housing has been performed [ 19 ], however, this method is much more complicated. The resistance of the heater is equal to 13 Ohms.…”

Section: Methodsmentioning

confidence: 99%

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Linear Drive Based on Silicon/Ethanol Composite

Kapłon

Milecki

2021

Polymers

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The paper presents a concept of an actuator, based on a silicon/ethanol composite placed in the brass bellows. Such actuator is operating based on a change in the physical state of ethanol, which is enclosed in bubbles surrounded by a matrix of silicone rubber. In this paper, the prototype of the actuator is described, and a series of its test results, in the open and closed loops, are presented. Two laser distance-sensors, with different accuracies, were used as a source of the feedback signal. During the investigations the temperature of the actuator was also measured. This has allowed us to determine the delay in heat flow from the heater to the composite. In the closed loop, P- and PI-type controllers were used in the drive positioning experiments. It was discovered that in the closed loop control, it was possible to achieve a positioning error of less than 200 µm. During the tests, the temperature inside the drive and the ambient temperature were also measured. In order to improve the dynamics of the drive, a small fan was used, controlled by the automation system. It allowed us to shorten the time to return the drive to its starting position. The results of frequency tests of the drive have also been presented.

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Section: Methodsmentioning

confidence: 99%

“…In [ 18 ] the use of special fabric for heating was presented. The prototype of actuator that uses induction heating is successfully applied, and its investigations are described in the paper [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Linear Drive Based on Silicon/Ethanol Composite

Kapłon

Milecki

2021

Polymers

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“…Electrically actuated and controlled PCM actuators can be achieved by embedding heating wires [84][85][86][87]. Other methods include microwave [88], near-infrared actuation [89], and induction heating [90][91][92]. Phasechanging actuators are unique due to their volumetric expansion mode of actuation.…”

Section: Phase-changing Actuatormentioning

confidence: 99%

A Review of Electrically Driven Soft Actuators for Soft Robotics

Sameoto

2022

Micromachines

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In recent years, the field of soft robotics has gained much attention by virtue of its aptness to work in certain environments unsuitable for traditional rigid robotics. Along with the uprising field of soft robotics is the increased attention to soft actuators which provide soft machines the ability to move, manipulate, and deform actively. This article provides a focused review of various high-performance and novel electrically driven soft actuators due to their fast response, controllability, softness, and compactness. Furthermore, this review aims to act as a reference guide for building electrically driven soft machines. The focus of this paper lies on the actuation principle of each type of actuator, comprehensive performance comparison across different actuators, and up-to-date applications of each actuator. The range of actuators includes electro-static soft actuators, electro-thermal soft actuators, and electrically driven soft pumps.

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“…As a result, an increase in the conductive area was achieved between the heating element and the composite. In previous work [ 14 ], a different method was proposed for the heating of the composite in an actuator, for which the heating was achieved indirectly by induction. In this case, the composite was enclosed in a metal casing in the form of an aluminum cylinder that was heated with induction.…”

Section: Introductionmentioning

confidence: 99%

Research on the Use of Silicon-Ethanol Composite in Actuators

Kapłon

Milecki

2022

Materials

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Silicon-ethanol is a relatively new smart composite in the category of phase-change materials (PCM). It consists of liquid ethanol entrapped in bubbles spread into a silicone rubber matrix, i.e., during cooling. The composite is able to expand significantly when heat is applied and shrink when it is removed. The properties of this material can be used in a new type of actuator. In this paper, the basic equations that describe the properties of actuators with a silicon-ethanol composite are given. Using them, two solutions of unidirectional actuators with a composite inserted into polycarbonate tubes and metal bellows are designed and investigated. In the study, actuators with different geometric dimensions and applied composite volumes are investigated. The elongations of the actuators and the blocking forces are measured. The theoretical relationships given at the beginning of the paper that describe the properties of the composite are validated using the performed experimental results of the built actuators. The tube actuators achieved elongation between 32% and 35% at a temperature of 75 degrees Celsius, that is, less than that predicted according to equations from earlier publications. Due to this, a modified equation that includes the influence of friction was proposed and compared with experimental results. The performance of the tube actuator deteriorates rapidly. In the case of bellow actuators, they stabilize after a few cycles of heating and cooling.

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Induction heating for a silicone / ethanol composite actuator

Cited by 4 publications

References 12 publications

Linear Drive Based on Silicon/Ethanol Composite

Linear Drive Based on Silicon/Ethanol Composite

A Review of Electrically Driven Soft Actuators for Soft Robotics

Research on the Use of Silicon-Ethanol Composite in Actuators

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