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Article
Publication date: 7 September 2012

Xuefeng Zhang, Yulong Zhao and Xuelei Zhang

The purpose of this paper is to provide a thin tactile force sensor array based on conductive rubber and to offer descriptions of the sensor design, fabrication and test.

Abstract

Purpose

The purpose of this paper is to provide a thin tactile force sensor array based on conductive rubber and to offer descriptions of the sensor design, fabrication and test.

Design/methodology/approach

The sensor array consists of a sandwich structure. Sensing elements are distributed discretely in the sensor. Each sensing element has two electrodes and a piece of conductive rubber with piezoresistive property. The electrodes, as well as the conductive trace for signal transmission, are printed on the substrate layer by the screen printing technique. A scanning circuit based on zero potential method and an experimental set‐up based on balance to characterize the sensor array are designed and implemented in the test of the sensor array.

Findings

Experimental results verify the validity of the sensor array in measuring the vertical tactile force between the sensing elements and the object.

Research limitations/implications

In this paper, all the sensors are tested without calibration procedures and the procedure of the dynamic test is implemented by manual operation.

Practical implications

The sensor array could be applied to measure the plantar force for gait detection in clinical applications.

Originality/value

The paper presents a tactile force sensor array with discrete sensing elements to essentially restrict the cross‐talk among sensing elements. This paper will provide many practical details that can help others in the field.

Details

Sensor Review, vol. 32 no. 4
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 22 March 2013

Dalibor Petković, Mirna Issa, Nenad D. Pavlović and Lena Zentner

The aim of this paper is to investigate implementations of carbon‐black filled silicone rubber for tactile sensation.

Abstract

Purpose

The aim of this paper is to investigate implementations of carbon‐black filled silicone rubber for tactile sensation.

Design/methodology/approach

The sensor‐elements for this tactile sensing structure were made by press‐curing from carbon‐black filled silicone rubber.

Findings

The behaviour of the silicone rubber shows strong non‐linearity, therefore, the sensor cannot be used for accurate measurements. The greatest advantage of this material lies in its high elasticity.

Originality/value

A new method for artificial tactile sensing skin for robotic applications.

Details

Sensor Review, vol. 33 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

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Article
Publication date: 1 March 2013

Dalibor Petković, Mirna Issa, Nenad D. Pavlović and Lena Zentner

The purpose of this paper is to propose a new methodological framework within which a compliant robotic joint can be studied.

Abstract

Purpose

The purpose of this paper is to propose a new methodological framework within which a compliant robotic joint can be studied.

Design/methodology/approach

A new method is presented for detecting the direction of the robotic joint rotation when subjected to an external collision force.

Findings

The behaviour of the silicone rubber shows strong non‐linearity, therefore, the sensor‐elements cannot be used for accurate measurements.

Originality/value

A new type of safe robotic mechanisms with an internal measuring system is proposed in this paper.

Details

Industrial Robot: An International Journal, vol. 40 no. 2
Type: Research Article
ISSN: 0143-991X

Keywords

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Article
Publication date: 5 September 2018

Ying Huang, Chao Hao, Jian Liu, Xiaohui Guo, Yangyang Zhang, Ping Liu, Caixia Liu, Yugang Zhang and Xiaoming Yang

The purpose of this study is to present a highly stretchable and flexible strain sensor with simple and low cost of fabrication process and excellent dynamic…

Abstract

Purpose

The purpose of this study is to present a highly stretchable and flexible strain sensor with simple and low cost of fabrication process and excellent dynamic characteristics, which make it suitable for human motion monitoring under large strain and high frequency.

Design/methodology/approach

The strain sensor was fabricated using the rubber/latex polymer as elastic carrier and single-walled carbon nanotubes (SWCNTs)/carbon black (CB) as a synergistic conductive network. The rubber/latex polymer was pre-treated in naphtha and then soaked in SWCNTs/CB/silicon rubber composite solution. The strain sensing and other performance of the sensor were measured and human motion tracking applications were tried.

Findings

These strain sensors based on aforementioned materials display high stretchability (500 per cent), excellent flexibility, fast response (approximately 45 ms), low creep (3.1 per cent at 100 per cent strain), temperature and humidity independence, superior stability and reproducibility during approximately 5,000 stretch/release cycles. Furthermore, the authors used these composites as human motion sensors, effectively monitoring joint motion, indicating that the stretchable strain sensor based on the rubber/latex polymer and the synergetic effects of mixed SWCNTs and CB could have promising applications in flexible and wearable devices for human motion tracking.

Originality/value

This paper presents a low-cost and a new type of strain sensor with excellent performance that can open up new fields of applications in flexible, stretchable and wearable electronics, especially in human motion tracking applications where very large strain should be accommodated by the strain sensor.

Details

Sensor Review, vol. 39 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

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Article
Publication date: 29 April 2014

Dalibor Petkovic, Mirna Issa, Nenad D. Pavlovic, Lena Zentner, Md Nor Ridzuan Daud and Shahaboddin Shamshirband

Tactile sensing is the process of determining physical properties and events through contact with objects in the world. The purpose of this paper is to establish a novel…

Abstract

Purpose

Tactile sensing is the process of determining physical properties and events through contact with objects in the world. The purpose of this paper is to establish a novel design of an adaptive neuro-fuzzy inference system (ANFIS) for estimation of contact position of a new tactile sensing structure.

Design/methodology/approach

The major task is to investigate implementations of carbon-black-filled silicone rubber for tactile sensation; the silicone rubber is electrically conductive and its resistance changes by loading or unloading strains.

Findings

The sensor-elements for the tactile sensing structure were made by press-curing from carbon-black-filled silicone rubber. The experimental results can be used as training and checking data for the ANFIS network.

Originality/value

This system is capable to find any change of contact positions and thus indicates state of the current contact location of the tactile sensing structure. The behavior of the use silicone rubber shows strong non-linearity, therefore, the sensor cannot be used for high accurate measurements. The greatest advantage of this sensing material lies in its high elasticity.

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Article
Publication date: 1 February 1993

This report, presented as the keynote paper at Surface Mount International, is the culmination of joint efforts to assess the use of lead in electronics assembly. The…

Abstract

This report, presented as the keynote paper at Surface Mount International, is the culmination of joint efforts to assess the use of lead in electronics assembly. The study, which is presented in two parts, involved the collaboration of the following participants: B. R. Allenby and J. P. Ciccarelli, AT&T, Basking Ridge, New Jersey; I. Artaki, J. R. Fisher and D. Schoenthaler, AT&T Bell Laboratories, ERC, Princeton, New Jersey; T. A. Carroll, Hughes, El Segundo, California; D. W. Dahringer, Y. Degani, R. S. Freund, T. E. Graedel, A. M. Lyons and J. T. Plewes, AT&T Bell Laboratories, Murray Hill, New Jersey; C. Gherman and H. Solomon, GE Aerospace, Philadelphia, Pennsylvania; C. Melton, Motorola Inc., Schaumburg, Illinois; G. C. Munie, AT&T Bell Laboratories, Indian Hill, Naperville, Illinois; and N. Socolowski, Alpha Metals, Jersey City, New Jersey. Part 1 was published in the previous issue of Circuit World, Vol. 19, No. 2.

Details

Circuit World, vol. 19 no. 3
Type: Research Article
ISSN: 0305-6120

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Article
Publication date: 1 February 1981

Leon D. Harmon

An extensive survey of over 300 reports worldwide shows that the state‐of‐the‐art in tactile sensing — defined as continuously variable touch sensing over an area where…

Abstract

An extensive survey of over 300 reports worldwide shows that the state‐of‐the‐art in tactile sensing — defined as continuously variable touch sensing over an area where there is special resolution — is primitive. Only now is a new level of sophistication beginning to appear. However, for industrial systems the simplest may prove to be the most reliable.

Details

Sensor Review, vol. 1 no. 2
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 26 July 2013

Dalibor Petković, Mirna Issa, Nenad D. Pavlović and Lena Zentner

The essence of the conceptual design is getting the innovative projects or ideas to ensure the products with best performance. It has been proved that the theory of…

Abstract

Purpose

The essence of the conceptual design is getting the innovative projects or ideas to ensure the products with best performance. It has been proved that the theory of inventive problem solution (TRIZ) is a systematic methodology for innovation. The purpose of this paper is to illustrate the design of an adaptive robotic gripper as an engineering example to show the significance and approaches of applying TRIZ in getting the creative conceptual design ideas.

Design/methodology/approach

Gripping and holding of objects are key tasks for robotic manipulators. The development of universal grippers able to pick up unfamiliar objects of widely varying shapes and surfaces is a very challenging task. The requirement for new adaptive grippers is the ability to detect and recognize objects in their environments.

Findings

The main aim of this work is to show a systematic methodology for innovation as an effective procedure to enhance the capability of developing innovative products and to overcome the main design problems. The TRIZ method will be utilized in order to eliminate the technical contradictions which appear in the passively adaptive compliant robotic gripper.

Originality/value

The design of an adaptive robotic gripper as an engineering example is illustrated in this paper to show the significance and approaches of applying TRIZ in getting the creative conceptual design ideas.

Details

Assembly Automation, vol. 33 no. 3
Type: Research Article
ISSN: 0144-5154

Keywords

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Article
Publication date: 1 February 1987

G. Clatterbaugh and H.K. Charles

Numerical techniques and experimental methods for the electrical characterisation and design of large multilayer thick film circuit boards are discussed. The numerical…

Abstract

Numerical techniques and experimental methods for the electrical characterisation and design of large multilayer thick film circuit boards are discussed. The numerical techniques investigated here include the boundary element and finite element methods for the estimation of capacitance and inductance and the method of normal modes for the analysis of voltage crosstalk between coupled transmission lines. Three‐dimensional capacitance and inductance calculations are included for typical thick film signal line and power and ground grid plane configurations. Numerical results are compared with measured data obtained from carefully constructed test coupons. Electrical characteristics of several popular high speed logic families and their compatibility with multilayer thick film interconnects are discussed and guidelines for the design of large thick film circuit boards for high speed digital applications are presented.

Details

Microelectronics International, vol. 4 no. 2
Type: Research Article
ISSN: 1356-5362

Content available
Article
Publication date: 1 September 2003

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Abstract

Details

Sensor Review, vol. 23 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

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