The conductive slip ring is very useful in the industry equipments, which is an electric assembly being responsible for transporting energy and signals to the rotary body. In order to the conductive slip ring is seali...The conductive slip ring is very useful in the industry equipments, which is an electric assembly being responsible for transporting energy and signals to the rotary body. In order to the conductive slip ring is sealing completely, it’s hard to detect that if its internal wires are conductive. The traditional manual detection is hard to finish that work when the number of the wires is big, and a real-time detection when the equipment is rotated is impossible. This paper uses NI's LabVIEW graphical programming software and DAQ board to realize an automatic detection system for the internal wires of slip ring, which can help us to judge if the wires are conductive when the equipment is rotated in real-time. At the same time, in this paper the application of LabVIEW in data acquisition is also studied.展开更多
In computed tomography(CT)slip rings and similar applications,effective communication in rotating systems is critical,yet conventional slip ring methods are plagued by electromagnetic interference,low speeds,and high ...In computed tomography(CT)slip rings and similar applications,effective communication in rotating systems is critical,yet conventional slip ring methods are plagued by electromagnetic interference,low speeds,and high costs.In this work,we propose,to our knowledge,a novel fiber side-emitting communication system that employs the side-emitting fiber(SEF)as the optical transmitter to address these issues.An optical antenna with a gain of 9.6 dB enhances coupling efficiency,and a new SEF transmission model is developed.Experimental results demonstrate real-time data transfer at 1.25 Gbps with a bit error rate below 1×10^(-12),offering a robust and efficient solution for high-speed wireless communications in dynamic applications.展开更多
The electrically charged wear debris generated inside the conductive slip ring of spacecraft not only exacerbates the wear of the ring channel but also causes distortion of the electric field,which can induce surface ...The electrically charged wear debris generated inside the conductive slip ring of spacecraft not only exacerbates the wear of the ring channel but also causes distortion of the electric field,which can induce surface flashover in vacuum,seriously affecting the operational reliability of solar array panels.This study is based on the space station experimental cabin’s on-orbit technology testing platform,and it systematically investigates the wear debris migration behavior of the brush-slip ring mechanism.Through long-term on-orbit testing observations,a three-dimensional multiphysics coupling model was developed using a Monte Carlo-Finite Element joint algorithm.This model reveals the migration mechanism of wear debris under the combined effect of the electrostatic field and electron radiation field:debris without initial velocity primarily adheres to the metal ring surface;debris with initial velocity migrates towards the shield with a speed of up to 0.0136 m/s in the electrostatic field,while a small amount adheres to the side of the insulating baffle due to electric field distortion near the brush;under the electron radiation combined field,the surface potential reconstruction of the dielectric increases the local field strength to 2.2×10^(8)V/m,significantly enhancing the migration trend of the debris towards the insulating baffle and causing the debris on the inner side of the shield to detach and impact the baffle.The study accurately reproduced the spatial distribution characteristics of the wear debris and revealed the discharge behavior induced by the debris through trajectory prediction models and comparison with on-orbit experimental data.This provides theoretical support for the insulation reliability design of space electromechanical products.展开更多
文摘The conductive slip ring is very useful in the industry equipments, which is an electric assembly being responsible for transporting energy and signals to the rotary body. In order to the conductive slip ring is sealing completely, it’s hard to detect that if its internal wires are conductive. The traditional manual detection is hard to finish that work when the number of the wires is big, and a real-time detection when the equipment is rotated is impossible. This paper uses NI's LabVIEW graphical programming software and DAQ board to realize an automatic detection system for the internal wires of slip ring, which can help us to judge if the wires are conductive when the equipment is rotated in real-time. At the same time, in this paper the application of LabVIEW in data acquisition is also studied.
基金supported by the China Postdoctoral Science Foundation(No.2024M760278)。
文摘In computed tomography(CT)slip rings and similar applications,effective communication in rotating systems is critical,yet conventional slip ring methods are plagued by electromagnetic interference,low speeds,and high costs.In this work,we propose,to our knowledge,a novel fiber side-emitting communication system that employs the side-emitting fiber(SEF)as the optical transmitter to address these issues.An optical antenna with a gain of 9.6 dB enhances coupling efficiency,and a new SEF transmission model is developed.Experimental results demonstrate real-time data transfer at 1.25 Gbps with a bit error rate below 1×10^(-12),offering a robust and efficient solution for high-speed wireless communications in dynamic applications.
文摘The electrically charged wear debris generated inside the conductive slip ring of spacecraft not only exacerbates the wear of the ring channel but also causes distortion of the electric field,which can induce surface flashover in vacuum,seriously affecting the operational reliability of solar array panels.This study is based on the space station experimental cabin’s on-orbit technology testing platform,and it systematically investigates the wear debris migration behavior of the brush-slip ring mechanism.Through long-term on-orbit testing observations,a three-dimensional multiphysics coupling model was developed using a Monte Carlo-Finite Element joint algorithm.This model reveals the migration mechanism of wear debris under the combined effect of the electrostatic field and electron radiation field:debris without initial velocity primarily adheres to the metal ring surface;debris with initial velocity migrates towards the shield with a speed of up to 0.0136 m/s in the electrostatic field,while a small amount adheres to the side of the insulating baffle due to electric field distortion near the brush;under the electron radiation combined field,the surface potential reconstruction of the dielectric increases the local field strength to 2.2×10^(8)V/m,significantly enhancing the migration trend of the debris towards the insulating baffle and causing the debris on the inner side of the shield to detach and impact the baffle.The study accurately reproduced the spatial distribution characteristics of the wear debris and revealed the discharge behavior induced by the debris through trajectory prediction models and comparison with on-orbit experimental data.This provides theoretical support for the insulation reliability design of space electromechanical products.
