Self-Sensing Electromagnetic Transducer for Vibration Control of Space Antenna Reflector

Yan, Bo; Wang, Ke; Kang, Chang-Xi; Zhang, Xinong; Chen, Wu

doi:10.1109/tmech.2017.2712718

Cited by 44 publications

(11 citation statements)

References 32 publications

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“…Therefore, one method to enhance the control authority of the passive shunt is to use a negative inductance to artificially reduce the inductance of the circuit and subsequently increase the maximum achievable damping ratio. However, the closed-loop system is conditionally stable [12][13][14]. What follows is the study of using active control to improve the control performance of the passive electromagnetic shunt damper in terms of the closed-loop damping and the robustness to resonance uncertainty.…”

Section: Hybrid Control Systemmentioning

confidence: 99%

“…The control performance of the passive electromagnetic shunt damper is limited by system's parameters like the mass and the stiffness of the primary system and the coupling constant as well as the inductance of the coil [11]. A popular method to enhance the control authority of the passive shunt is to use negative impedance which can be implemented actively [12][13][14]. Basically, the negative impedance, i.e., the resistance and/or inductance, cancels the transducer's inherent impedance and increases the control current which subsequently leads to a higher control authority.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Electromagnetic Shunt Damper for Vibration Control

Paknejad

Zhao

Chesné

et al. 2020

Journal of Vibration and Acoustics

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It has been shown that shunting electromagnetic devices with electrical networks can be used to damp vibrations. These absorbers have however limitations that restrict the control performance, i.e. the total damping of the system and robustness vs parameter variations. On the other hand, the electromagnetic devices are widely used in active control techniques as an actuator. The major difficulty that arises in practical implementation of these techniques is the power consumption required for conditioners and control units. In this study, robust hybrid control system is designed to combine the passive electromagnetic shunt damper with an active control in order to improve the performance with low power consumption. Two different active control laws, based on an active voltage source and an active current source, are proposed and compared. The control law of the active voltage source is the direct velocity feedback. However, the control law of the active current source is a revisited direct velocity feedback. The method of maximum damping, i.e. maximizing the exponential time-decay rate of the response subjected to the external impulse forcing function, is employed to optimize the parameters of the passive and the hybrid control systems. The advantage of using the hybrid control configuration in comparison with purely active control system is also investigated in terms of the power consumption. Besides these assets, it is demonstrated that the hybrid control system can tolerate a much higher level of uncertainty than the purely passive control systems.

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Section: Hybrid Control Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Electromagnetic Shunt Damper for Vibration Control

Paknejad

Zhao

Chesné

et al. 2020

Journal of Vibration and Acoustics

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“…In recent years, wireless sensor networks and wearable electronic devices have become widely used and vibration energy harvesters have been proposed to convert ambient vibration energy into electrical energy and serve as alternative power sources. The commonly used transduction mechanisms include piezoelectricity [1,2,3,4], electromagnetism [5], electrostatics [6], and magnetostriction [7]. Among them, the piezoelectric energy harvester (PEH) has drawn more and more research attention, due to its high energy density, easy fabrication, simple configuration, and so on.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Magnetically Coupled Multi-Frequency Hybrid Energy Harvester

Hong

Zhang³

et al. 2019

Sensors

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The approach to improve the output power of piezoelectric energy harvester is one of the current research hotspots. In the case where some sources have two or more discrete vibration frequencies, this paper proposed three types of magnetically coupled multi-frequency hybrid energy harvesters (MHEHs) to capture vibration energy composed of two discrete frequencies. Electromechanical coupling models were established to analyze the magnetic forces, and to evaluate the power generation characteristics, which were verified by the experimental test. The optimal structure was selected through the comparison. With 2 m/s2 excitation acceleration, the optimal peak output power was 2.96 mW at 23.6 Hz and 4.76 mW at 32.8 Hz, respectively. The superiority of hybrid energy harvesting mechanism was demonstrated. The influences of initial center-to-center distances between two magnets and length of cantilever beam on output power were also studied. At last, the frequency sweep test was conducted. Both theoretical and experimental analyses indicated that the proposed MHEH produced more electric power over a larger operating bandwidth.

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“…The SSD method shows its great potential in vibration control because of several advantages. Recently, a number of investigations have been carried out with the aim of improving the control performance using the SSD method [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Superharmonic vibration and its reduction in SSD control by increase of voltage inversion time

Tan

Qiu

et al. 2018

Smart Mater. Struct.

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The semi-active synchronized switch damping (SSD) approach has been widely used in vibration suppression owing to its many advantages compared with the active and passive approaches. The SSD method is realized by switching the voltage on the piezoelectric patch embedded in the structure, synchronically with the vibration of the mode to be controlled. Although good control performance can be obtained in the targeted mode, vibrations of highorder harmonic frequencies are usually excited due to the rectangular waveform of the switched actuator voltage because of infinitesimal inversion time, as observed in the previous experiments. This drawback of the SSD method has greatly hindered its application in practical engineering structures. In order to overcome this drawback, the authors propose a new method in this study to suppress the high-order harmonic components in the switched voltage by increasing the inversion time of the voltage. The theoretical expressions of the switched voltage and the dynamic response of the structure were formulated for the cases with finite voltage inversion time. The theoretical results show that increasing the inversion time may weaken the vibration control effect of the targeted mode, but it can significantly reduce the excitation force of the highorder harmonic components. When the inversion time is half of the period of the targeted mode, all the high-order harmonic components in the actuator voltage are completely erased and the control force of the targeted mode decreases by 21%. An experimental setup of a flexible beam was used to verify the theoretical results of the switched voltage and control performance under different inversion time.

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Self-Sensing Electromagnetic Transducer for Vibration Control of Space Antenna Reflector

Cited by 44 publications

References 32 publications

Hybrid Electromagnetic Shunt Damper for Vibration Control

Hybrid Electromagnetic Shunt Damper for Vibration Control

Design and Analysis of a Magnetically Coupled Multi-Frequency Hybrid Energy Harvester

Superharmonic vibration and its reduction in SSD control by increase of voltage inversion time

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