The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform

Zhihua Feng - One of the best experts on this subject based on the ideXlab platform.

  • Inductive debris sensor using one Energizing Coil with multiple sensing Coils for sensitivity improvement and high throughput
    Tribology International, 2018
    Co-Authors: Yi Jun Ren, Guo Feng Zhao, Zhihua Feng
    Abstract:

    Abstract Inductive oil debris monitoring has been widely used in the prognosis of machinery faults. This work proposes a new structure of inductive debris sensor that provides sensitive debris-sensing capability. This structure, which includes multiple sensing Coils inside an Energizing Coil, considerably differs from traditional structures. Theoretical analysis shows that the proposed structure can significantly improve sensitivity. The sensor with two semicircular sensing Coils is preliminarily designed and tested. The performance of the sensor is evaluated using a simple and efficient test platform. Experimental results show that the designed sensor can identify 120 μm (D) ferrous particles and 210 μm (D) non-ferrous particles in a pipe with an inner diameter of 34 mm.

Bogdan Miedzinski - One of the best experts on this subject based on the ideXlab platform.

  • Approach to Control of a Polarized Reed Switch Using an Equivalent Solenoid Method
    2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), 2020
    Co-Authors: Bogdan Miedzinski, Marcin Habrych, Grzegorz Wisniewski, Grzegorz Debita, Xin Wang, Bartosz Polnik
    Abstract:

    The article presents and discusses possibility of use an equivalent solenoid method to estimate control magnetic field of a polarized reed switch. Simulations were performed for the reed switch controlled by an Energizing Coil. Applicability of this approach was verified by test results for a physical model of the reed switch.

  • The Influence of Actuation on Performance of a Mercury Wetted
    2011
    Co-Authors: Bogdan Miedzinski, Xin Wang
    Abstract:

    Paper presents and discusses results of investigations of performance of mercury wetted reed switches of different structure depending on way of control when actuated by means of an Energizing Coil. Both switches with change -over as well as make type reeds were considered. On the basis of the investigated results the conclusions on the right reed structure selection and mercury interaction within a contact area are formulated.

  • The Influence of Actuation on Performance of a Mercury Wetted Reed Switch
    Przegląd Elektrotechniczny, 2011
    Co-Authors: V. N. Shoffa, Bogdan Miedzinski, V. N. Cicerjukin, X. Wang
    Abstract:

    Paper presents and discusses results of investigations of performance of mercury wetted reed switches of different structure depending on way of control when actuated by means of an Energizing Coil. Both switches with change –over as well as make type reeds were considered. On the basis of the investigated results the conclusions on the right reed structure selection and mercury interaction within a contact area are formulated. Streszczenie. W artykule zaprezentowano i omowiono wyniki badan dzialania kontaktronow zwilzanych rtecią, o roznej strukturze, w zalezności od sposobu sterowania gdy napedzane są za pomocą cewki. Rozpatrywano zarowno kontaktrony przelączne jak i zwierne. Na podstawie uzyskanych wynikow badan sformulowano wnioski odnoście do wlaściwego doboru konstrukcji kontaktronu jak i wplywu rteci znajdującej sie w obszarze stykowym. (Wplyw sposobu sterowania na dzialanie kontaktronu zwilzanego rtecią).

Y. J. Chen - One of the best experts on this subject based on the ideXlab platform.

  • Persistent Current Decay of a Superconducting Coil in an AC Field
    Advances in Cryogenic Engineering, 1994
    Co-Authors: Sangkwon Jeong, Joseph Minervini, J. R. Hale, Y. J. Chen
    Abstract:

    The superconducting magnets for a magnetically levitated vehicle are often designed to operate in persistent current mode. Ideally, the magnets carry DC transport current in a steady magnetic field. The magnet, however, will experience transient fields and thus induce transient transport current due to mechanical and electrical perturbations. Under these conditions, it is possible for the AC losses in the superconductor to result in a decay of the persistent transport current. This paper presents a unique method of measuring the transport current loss component of the hysteretic AC loss by measurement of the decay of the persistent current. The experimental apparatus consists of a pair of matched solenoidal Coils. These Coils, after being charged by an Energizing Coil, are subject to magnetic field variations. The current decay rate in the persistent-mode Coil pair is measured as a function of the strength and frequency of the external field. This current decay rate is directly related to the loss of energy. The experimental data are presented primarily for large field variations, and these results are compared to theoretical prediction.

Xin Wang - One of the best experts on this subject based on the ideXlab platform.

  • Approach to Control of a Polarized Reed Switch Using an Equivalent Solenoid Method
    2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), 2020
    Co-Authors: Bogdan Miedzinski, Marcin Habrych, Grzegorz Wisniewski, Grzegorz Debita, Xin Wang, Bartosz Polnik
    Abstract:

    The article presents and discusses possibility of use an equivalent solenoid method to estimate control magnetic field of a polarized reed switch. Simulations were performed for the reed switch controlled by an Energizing Coil. Applicability of this approach was verified by test results for a physical model of the reed switch.

  • The Influence of Actuation on Performance of a Mercury Wetted
    2011
    Co-Authors: Bogdan Miedzinski, Xin Wang
    Abstract:

    Paper presents and discusses results of investigations of performance of mercury wetted reed switches of different structure depending on way of control when actuated by means of an Energizing Coil. Both switches with change -over as well as make type reeds were considered. On the basis of the investigated results the conclusions on the right reed structure selection and mercury interaction within a contact area are formulated.

Toshiro Higuchi - One of the best experts on this subject based on the ideXlab platform.

  • Novel Magnetostrictive Bimetal Actuator Using Permendur
    2016
    Co-Authors: Mojtaba Ghodsi, Toshiba Ueno, Toshiro Higuchi
    Abstract:

    responses Abstract. In this research permendur (49Fe-49Co-2V) and nickel were used to make a novel bimetal actuator. The actuator consists of a main body and core with Energizing Coil. The main body of actuator is made of annealed permendur with two magnetostrictive bimetal arms. The magnetostrictive bimetal technique is used to enhance the small displacement of permendur. Static and dynamic behaviors of the actuator are investigated at both, room temperature (RT) and 77 K. The actuator magnified the small displacement of permendur strip (1.8 µm) and large displacement of 9 and 5 µm are achieved at RT and 77 K, respectively when the Coil was energized by ± 5 A current. Additionally, it is found that resonance frequency of actuator is 1240 Hz at 77 K and 1125 Hz at RT. Since the stiffness of actuator increases at 77 K, the displacement of actuator is reduced 33-50 % when the Coil is energized with different amplitudes at cryogenic environments

  • Novel Magnetostrictive Bimetal Actuator Using Permendur
    Advanced Materials Research, 2008
    Co-Authors: Mojtaba Ghodsi, Toshiba Ueno, Toshiro Higuchi
    Abstract:

    In this research permendur (49Fe-49Co-2V) and nickel were used to make a novel bimetal actuator. The actuator consists of a main body and core with Energizing Coil. The main body of actuator is made of annealed permendur with two magnetostrictive bimetal arms. The magnetostrictive bimetal technique is used to enhance the small displacement of permendur. Static and dynamic behaviors of the actuator are investigated at both, room temperature (RT) and 77 K. The actuator magnified the small displacement of permendur strip (1.8 µm) and large displacement of 9 and 5 µm are achieved at RT and 77 K, respectively when the Coil was energized by ± 5 A current. Additionally, it is found that resonance frequency of actuator is 1240 Hz at 77 K and 1125 Hz at RT. Since the stiffness of actuator increases at 77 K, the displacement of actuator is reduced 33-50% when the Coil is energized with different amplitudes at cryogenic environments.