Testing and Evaluation of Metal Fiber Brush Operation on Slip Rings and Commutators

Brown, Lloyd; Kuhlmann‐Wilsdorf, D.; Jesser, W. A.

doi:10.1109/tcapt.2008.921649

Cited by 20 publications

(3 citation statements)

References 14 publications

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“…According to Brown et al (2008), the wear rate is proportional to the current I 1.72 . Thus, k 1 can be determined by: where, c 1 , d 1 , m 1 , n 1 are unknown parameters.…”

Section: Fractal Contact Resistance Model Considering Wearmentioning

confidence: 99%

Fractal contact resistance model of wind pitch slip ring considering wear and self-excited vibration

Zhang,

Zuo,

Zhou

2024

ILT

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Purpose The purpose of this paper is to reveal the dynamic contact characteristics of the slip ring. Dynamic contact resistance models considering wear and self-excited were established based on fractal theory. Design/methodology/approach The effects of tangential velocity, stiffness and damping coefficient on dynamic contact resistance are studied. The relationships between fractal parameters, wear time and contact parameters are revealed. Findings The results show that the total contact area decreases with the friction coefficient and fractal roughness under the same load. Self-excited vibration occurs at a low speed (less than 0.6 m/s). It transforms from stick-slip motion at 0.4 m/s to pure sliding at 0.5 m/s. A high stiffness makes contact resistance fluctuate violently, while increasing the damping coefficient can suppress the self-excited vibration and reduce the dynamic contact resistance. The fractal contact resistance model considering wear is established based on the fractal parameters models. The validity of the model is verified by the wear tests. Originality/value The results have a great significance to study the electrical contact behavior of conductive slip ring. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2023-0300/

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“…According to Brown et al (2008), the wear rate is proportional to the current I 1.72 . Thus, k 1 can be determined by: where, c 1 , d 1 , m 1 , n 1 are unknown parameters.…”

Section: Fractal Contact Resistance Model Considering Wearmentioning

confidence: 99%

Fractal contact resistance model of wind pitch slip ring considering wear and self-excited vibration

Zhang,

Zuo,

Zhou

2024

ILT

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“…In this case, the approach usually adopted is to transfer electrical energy and control signals to the rotating platform by using slip rings, consisting of electrical brushes that rub on a conductive ring. This solution is commonly used in several industrial applications; however, the inevitable wear of carbon brushes requires frequent maintenance and preventive replacement to avoid malfunctions that may cause the interruption of the production [1]- [3]. To increase the reliability of the rotary assembly stations, it is possible to remove the slip-rings dedicated to the control signals transmitting the information through wireless communication technologies.…”

Section: Introductionmentioning

confidence: 99%

Wireless Power Transfer Using a Five-Phase Wound-Rotor Induction Machine for Speed-Controlled Rotary Platforms

Rizzoli

Mengoni

Tani

et al. 2020

IEEE Trans. Ind. Electron.

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The use of rotary assembly platforms is common in several automation applications, such as in bottle filling and capping systems. One of the problems that designers has to address is how to supply the electric actuators, sensors and process controllers located on the rotating disk of the machine. The traditional solution is to use slip-ring contacts. However, they suffer from aging and thus a scheduled maintenance program is required. In this paper, the motion of the platform and the contact-less energy transfer to the auxiliary loads located on the rotating disk is obtained through a direct drive woundrotor five-phase induction motor. The experimental tests on a scaled prototype demonstrate the practical potential of the machine.

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“…Gold-based alloys which have excellent electrical conductivity, thermal conductivity and low contact resistance and other characteristics, are often used as a high-end electrical contact materials, such as high precision inertial devices and satellite slip ring brushes [1][2][3]. In such applications, the brushes, gold sheets, and slip rings are assembled together to form friction pair components by sliding frictional contact between the two to transmit electrical signals.…”

Section: Introductionmentioning

confidence: 99%

Electrical Contact Property of AuNi9/AuCuAgZn Sheet Tribo-Couple

Lei

Gao

Chen

et al. 2015

KEM

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Gold-based alloys are widely used in electrical contact environment which requires small contact resistance, and friction pair components consisting of electrical contact has a direct impact on the properties of electrical contact. In this thesis, an experiment of AuNI9 brushes/AuCuAgZn gold sheets in a organization is designed to show the elastic properties of the brush, friction pair wear properties and environmental adaptability of the contact resistance, whose result indicates that the elastic properties of the brushes are stable, alloy sheets mainly produce wear when the brushes and gold sheets are used in matched pair and environmental assessment tests do not significantly increase the degree of wear of the friction pair components in low load condition.

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Testing and Evaluation of Metal Fiber Brush Operation on Slip Rings and Commutators

Cited by 20 publications

References 14 publications

Fractal contact resistance model of wind pitch slip ring considering wear and self-excited vibration

Fractal contact resistance model of wind pitch slip ring considering wear and self-excited vibration

Wireless Power Transfer Using a Five-Phase Wound-Rotor Induction Machine for Speed-Controlled Rotary Platforms

Electrical Contact Property of AuNi9/AuCuAgZn Sheet Tribo-Couple

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