GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Xiong, Ke  (34)
  • Engineering  (34)
Material
Publisher
Person/Organisation
Language
Years
Subjects(RVK)
  • Engineering  (34)
RVK
  • 1
    Online Resource
    Online Resource
    Semi-active vibration control of large-scale flexible structure based on fuzzy adaptive SSDV technique
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 1199-1206
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 1199-1206
    Abstract: In order to suppress the vibration of large-scale flexible structures which are applied on the spacecraft, a semi-active control method based on fuzzy adaptive SSDV (synchronized switch damping on voltage) technique is proposed. The value of voltage source at the switching moment is adjusted adaptively by using fuzzy logic, in order to improve the stability and control precision of the semi-active control system. The feasibility of this method is verified by two kinds of experiments with typical disturbance conditions. By comparing different adaptive displacement-voltage curves, the fuzzy adaptive method can achieve higher control precision. For the initial displacement disturbance of 10 mm, the fuzzy adaptive SSDV method can increase the system damping ratio from 0.6% to 5.1%. The control effect decreases with the increase of initial displacement. For the disturbance caused by the mechanism at the tip position, the method can effectively shorten the vibration damping time and reduce the displacement from 0.3 mm to 0.04 mm.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209437
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Wave packet separation based corrosion damage detection for aircraft structures
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 1029-1038
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 1029-1038
    Abstract: To guarantee the safety and reliability of aircraft structures, Lamb wave based structural health monitoring has been widely used in recent years. However, there are several factors that severely restrict its practical application, such as dispersion effect and complex boundary reflection. The overlap and deformation in wave packets make it difficult to extract the damage characteristics from the complex Lamb wave signals. To tackle this problem, a latent variable model based wave packet separation method is developed in this paper. Aimed at corrosion damage detection, several damage indices are investigated experimentally. By choosing the most sensitive damage index, the validity and the accuracy of the proposed method in corrosion damage detection are demonstrated through the corrosion experiments.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209418
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Analysis of nonlinear vibration energy harvesters using a complex dynamic frequency method
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 1555-1562
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 1555-1562
    Abstract: To understand the complicated dynamic behavior of a Nonlinear Piezoelectric Energy Harvester (NPEH), this paper develops an improved Complex Dynamic Frequency (CDF) method based on complex normal form. CDF introduces a dynamic frequency factor and establishes a set of algebraic equations in handling the effect of higher-order nonlinear terms in a wide frequency band to obtain periodic responses of NPEH. Numerical and experimental studies verify that the proposed CDF gives consistent and accurate predictions of the systems with both weak and strong nonlinearity. Furthermore, through an implicit relationship between magnet arrangement and output performance, one may effectively control the sweep frequency with softening and hardening characteristics. That is a major breakthrough toward the further nonlinear design for broad bandwidth harvesters. As the application, the experimental results reveal the high response profiles can be in a wide frequency range from 10.8 Hz to 24.5 Hz for the NPEH developed that allows an output power of 9 times higher than the conventional linear structure.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209477
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    High order distribute circuit model of laminated busbars and its order reduction techniques for simulating fast turn-on and turn-off transients
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 473-482
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 473-482
    Abstract: A high order distribute circuit model of a laminated busbar is proposed in order to accurately simulate the fast turn-on and turn-off transients of a modern power electronic device. In the model, the predominant stray parameters of the loop inductance and the stray capacitance are considered. Moreover, a model order reduction (MOR) technique using the zero-pole elimination technique is presented to combat the high complexity of the extremely computationally expensive circuit model. The MOR methodology is implemented in two phases. The first phase is to compute the reduced order frequency model. In the second phase, this reduced model is synthesized into a circuit model in a netlist representation (RLC elements), which can be integrated in any SPICE-like circuit solver. Finally, the proposed model and methodology are used to solve the transient performances of a prototype IGBT based inverter, showing excellent agreements with the experimental results.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209354
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Digital fluxgate current sensor based on second harmonic detection
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 111-118
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 111-118
    Abstract: This paper presents a new digital fluxgate current sensor based on second harmonic detection for DC and AC measurement. The sensor utilizes a feedback loop to obtain an almost zero-flux condition, i.e., a balance between the magnetic flux of the primary current and the feedback current, in which way the feedback current is proportional to the primary current. The AC magnetic flux is detected with an induction coil, and the DC zero-flux condition is realized by magnetic saturation effect method, where the magnetic core is periodically magnetized and then the second harmonic of the magnetization current is calculated as an indication of the DC magnetic flux. After theoretical derivation, the operating principle of the sensor was investigated using a numerical simulation model built with Simulink of MATLAB. In addition, a prototype sensor was developed and tested. The experiment results demonstrate that the current sensor works properly for DC and AC measurement. The average error is about 0.06% for DC measurement.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209313
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    The effect of DC magnetic field on signal characteristics of magnetic Barkhausen noise
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 887-894
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 887-894
    Abstract: Magnetic Barkhausen Noise (MBN) detection technology shows great potential in the pipeline detection of stress, microstructure, and fatigue damage. However, in actual application, some pipes such as those near power plant are exposed to external magnetic fields or contain remanence. The presence of these magnetic fields will affect MBN features and then influence the testing results. To investigate the effect of DC magnetic field on MBN signal characteristics, theoretical analysis and experimental verification were carried out in this paper. It is found that the intensity and direction of the DC magnetic field have great effects on MBN signal characteristics, including the changes in the energy of MBN signal, the peak position and the shape of MBN signal profile.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209402
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    The study for constant force characteristic of C-shaped superelastic SMA
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 1253-1259
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 1253-1259
    Abstract: Clamping devices with constant force or pressure are desired in medical device, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. It is easily obtained by stretching an SMA wire. However, studies with SMA bending round bar have seldom been reported before. This paper studied constant force characteristic of C-shaped round bar with shape memory alloys. Optimization designs of the components were carried out with computational simulation. Numerical results show that the phenomenon of constant force strongly depends on contour curve shape and geometric dimensions of the C-shaped round bar of SMA component.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209443
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    Adaptive identification methods of nonlinear random electrical signal
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 431-438
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 431-438
    Abstract: The nonlinearity of the electric vehicle DC charging equipment and the complexity of the charging environment lead to the complex and changeable DC charging signal of the electric vehicle. It is urgent to study the distortion signal recognition method suitable for the electric vehicle DC charging. Focusing on the characteristics of fundamental and ripple in DC charging signal, the Kalman filter algorithm is used to establish the matrix model, and the state variable method is introduced into the filter algorithm to track the parameter state, and the amplitude and phase of the fundamental waves and each secondary ripple are identified; In view of the time-varying characteristics of the unsteady and abrupt signal in the DC charging signal, the stratification and threshold parameters of the wavelet transform are corrected, and a multi-resolution method is established to identify and separate the unsteady and abrupt signals. Identification method of DC charging distortion signal of electric vehicle based on Kalman/modified wavelet transform is used to decompose and identify the signal characteristics of the whole charging process. Experiment results demonstrate that the algorithm can accurately identify ripple, sudden change and unsteady wave during charging. It has higher signal to noise ratio and lower mean root mean square error.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209349
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    Study of multiple-site structural damage detection application using vibration response
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 1411-1419
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 1411-1419
    Abstract: The identification effects of different modal parameters (displacement mode, rotation mode, and curvature mode) of the beam structure on structural damage during crack initiation are studied in this paper. Firstly, the displacement mode, the rotation mode and the curvature mode of the two-span simply supported beam are calculated using the vibration response. Secondly, combining the multi-resolution and singularity analysis characteristics of continuous wavelet transform, the wavelet transform coefficients of three modal parameters are calculated to identify the singularity of structural modal parameters. Thirdly, the recognition effects of each method on structural damage are compared by adding different degrees of random noise to the simulation data. The results show that the damage identification methods based on three different modal parameters can locate small-scale structural damage, but the anti-noise performance of each method is different, the anti-noise performance of the rotation mode is the best, the displacement mode is second and the curvature mode is poor. Finally, the experimental data is used to verify the recognition effect of each damage identification method based on different modal parameters on the actual structural damage. The experimental results show that the damage recognition effect of the rotation mode parameters is better, while the displacement mode and the curvature mode parameters are similar, but the curvature mode method is more likely to be interfered at the smaller damage. These analysis results provide a reference for the selection of different damage identification parameters according to the environment and response characteristics in engineering practice.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209460
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 10
    Online Resource
    Online Resource
    Reduction of structural vibrations with the piezoelectric stacks ring
    IOS Press ; 2020
    In:  International Journal of Applied Electromagnetics and Mechanics Vol. 64, No. 1-4 ( 2020-12-10), p. 729-736
    Details
    In: International Journal of Applied Electromagnetics and Mechanics, IOS Press, Vol. 64, No. 1-4 ( 2020-12-10), p. 729-736
    Abstract: It is known that piezoelectric material shunted with external circuits can convert mechanical energy to electrical energy, which is so called piezoelectric shunt damping technology. In this paper, a piezoelectric stacks ring (PSR) is designed for vibration control of beams and rotor systems. A relative simple electromechanical model of an Euler Bernoulli beam supported by two piezoelectric stacks shunted with resonant RL circuits is established. The equation of motion of such simplified system has been derived using Hamilton’s principle. A more realistic FEA model is developed. The numerical analysis is carried out using COMSOL® and the simulation results show a significant reduction of vibration amplitude at the specific natural frequencies. Using finite element method, the influence of circuit parameters on lateral vibration control is discussed. A preliminary experiment of a prototype PSR verifies the PSR’s vibration reduction effect.
    Type of Medium: Online Resource
    ISSN: 1383-5416 , 1875-8800
    URL: Article
    DOI: 10.3233/JAE-209384
    RVK:
    ZN 3240
    Language: English
    Publisher: IOS Press
    Publication Date: 2020
    detail.hit.zdb_id: 2028980-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...