The Experts below are selected from a list of 30378 Experts worldwide ranked by ideXlab platform

Dongmei Xu - One of the best experts on this subject based on the ideXlab platform.

  • design and experiments of a single foot linear Piezoelectric Actuator operated in a stepping mode
    IEEE Transactions on Industrial Electronics, 2018
    Co-Authors: Liangliang Zhao, Wei-shan Chen, Dongmei Xu, Jie Deng
    Abstract:

    A single-foot linear Piezoelectric Actuator is proposed in this paper, and a new exciting method for the stepping motion is discussed. The proposed Actuator works in the hybrid modes of the second horizontal bending vibration and the second vertical bending vibration. Two intermittent sinusoidal signals with a phase difference of 90° are applied on the horizontal and vertical PZT elements, respectively, to obtain a discontinuous elliptical motion at the driving foot, which can move the runner linearly step by step. The structure of a single-foot linear Piezoelectric Actuator is designed and the mechanism for the linear driving is clarified. Then, modal and transient analyses are carried out by using ANSYS software to get the resonance frequencies of the bending modes and the movement trajectory of the driving foot. Finally, a prototype of the Piezoelectric Actuator is fabricated, and experiments are carried out. The experiment results show that the displacement resolution, the maximum velocity, and the maximum thrust of the proposed Piezoelectric Actuator are about 0.21 μm, 827.5 mm/s, and 27 N, respectively.

  • A Bonded-Type Piezoelectric Actuator Using the First and Second Bending Vibration Modes
    IEEE Transactions on Industrial Electronics, 2016
    Co-Authors: Xiaohui Yang, Wei-shan Chen, Dongmei Xu
    Abstract:

    A Piezoelectric Actuator, which is constructed by bonding six pieces of lead zirconate titanate (PZT) ceramic plates on a step aluminum alloy beam, was proposed and tested for the design of a small-size rotary driving appratus. Two pieces of PZT ceramic plates bonded in the middle part is used to generate the first bending mode, whereas the other four on the two sides are set for the excitation of the second bending mode; their superimposition can produce elliptical movements on the two ends of the beam, which can rotate a disk-shaped rotor. Compared with the traditional ring-shaped traveling-wave Piezoelectric Actuator, the proposed Actuator has a simpler structure and operating principle; it also gives a new mode for rotary driving. The resonance frequencies of the first and second bending modes were designed to be close at about 21.1 kHz. The maximum no-load speed and torque were tested to be 158 r/min and 0.053 N · m, respectively. The prototype achieved a power density of 19.0 W/kg under a weight of 15.8 g. The proposed combination plan of the first and second bending modes is very suitable for constructing a small-size Piezoelectric Actuator, which exhibits merits for application in small systems.

Junhui Hu - One of the best experts on this subject based on the ideXlab platform.

  • A linear Piezoelectric Actuator based solar panel cleaning system
    Energy, 2013
    Co-Authors: Xiaolong Lu, Qi Zhang, Junhui Hu
    Abstract:

    A linear Piezoelectric Actuator based solar panel cleaning system is proposed in order to make a solar panel operate at the best power generation state while the solar panel is used in dusty environment. A Piezoelectric Actuator linearly moving on a guide is employed to drive a wiper fixed on the Actuator. At a proper pressure force between the wiper and solar panel, the Actuator can drive the wiper to effectively wipe a dust layer away from the solar panel's surface. The cleaning system's energy gain, which is defined as the ratio of a solar panel's output electric energy increase caused by cleaning to the energy consumption by the Piezoelectric Actuator, is much higher than 1. The merits of using the Piezoelectric Actuator in a solar panel cleaning system is that the cleaning system has light weight and compact structure, which is a common feature of Piezoelectric systems. © 2013 Elsevier Ltd.

  • A solar panel cleaning system based on a linear Piezoelectric Actuator
    2013 Symposium on Piezoelectricity Acoustic Waves and Device Applications, 2013
    Co-Authors: Qi Zhang, Xiaolong Lu, Junhui Hu
    Abstract:

    A linear Piezoelectric Actuator based solar panel cleaning system is proposed in order to make a solar panel operate at the best power generation state while the solar panel is used in dusty environment. A Piezoelectric Actuator linearly moving on a guide is employed to drive a wiper fixed on the Actuator. At a proper pressure force between the wiper and solar panel, the Actuator can drive the wiper to effectively wipe a dust layer away from the solar panel's surface. The cleaning system's energy gain, which is defined as the ratio of a solar panel's output electric energy increase caused by cleaning to the energy consumption by the Piezoelectric Actuator, is much higher than 1. The merits of using the Piezoelectric Actuator in a solar panel cleaning system is that the cleaning system has light weight and compact structure, which is a common feature of Piezoelectric systems.

Qi Su - One of the best experts on this subject based on the ideXlab platform.

  • An Inchworm Type Piezoelectric Actuator Working in Resonant State
    IEEE Access, 2018
    Co-Authors: Xinqi Tian, Qiquan Quan, Liang Wang, Qi Su
    Abstract:

    An inchworm type Piezoelectric Actuator with four driving feet is proposed and tested. The proposed Actuator has merits of easy fabrication and miniaturization structure by using a boned-type structure. Horizontal vibration mode and vertical vibration mode are produced synchronously with a certain temporal phase, and their superimposition makes the driving feet produce elliptical movements. The Actuators can achieve bidirectional motion easily by exchanging the two driving signals. The resonance frequencies of the two modes are tuned to be close at 41.35 kHz by adjusting the structural dimensions. The mode shapes and trajectories of driving feet are investigated to verify the driving principle. The vibration amplitudes of driving feet in driving direction are trimmed to be nearly the same via changing the phase difference. The design and analysis are accomplished by finite element method. The vibration characteristics of the prototype are verified by a scanning laser Doppler vibrometer. The fabricated Piezoelectric Actuator achieves a maximum speed of 1641 mm/s and a maximum thrust of 120 gf.

Wei-shan Chen - One of the best experts on this subject based on the ideXlab platform.

  • design and experiments of a single foot linear Piezoelectric Actuator operated in a stepping mode
    IEEE Transactions on Industrial Electronics, 2018
    Co-Authors: Liangliang Zhao, Wei-shan Chen, Dongmei Xu, Jie Deng
    Abstract:

    A single-foot linear Piezoelectric Actuator is proposed in this paper, and a new exciting method for the stepping motion is discussed. The proposed Actuator works in the hybrid modes of the second horizontal bending vibration and the second vertical bending vibration. Two intermittent sinusoidal signals with a phase difference of 90° are applied on the horizontal and vertical PZT elements, respectively, to obtain a discontinuous elliptical motion at the driving foot, which can move the runner linearly step by step. The structure of a single-foot linear Piezoelectric Actuator is designed and the mechanism for the linear driving is clarified. Then, modal and transient analyses are carried out by using ANSYS software to get the resonance frequencies of the bending modes and the movement trajectory of the driving foot. Finally, a prototype of the Piezoelectric Actuator is fabricated, and experiments are carried out. The experiment results show that the displacement resolution, the maximum velocity, and the maximum thrust of the proposed Piezoelectric Actuator are about 0.21 μm, 827.5 mm/s, and 27 N, respectively.

  • A Bonded-Type Piezoelectric Actuator Using the First and Second Bending Vibration Modes
    IEEE Transactions on Industrial Electronics, 2016
    Co-Authors: Xiaohui Yang, Wei-shan Chen, Dongmei Xu
    Abstract:

    A Piezoelectric Actuator, which is constructed by bonding six pieces of lead zirconate titanate (PZT) ceramic plates on a step aluminum alloy beam, was proposed and tested for the design of a small-size rotary driving appratus. Two pieces of PZT ceramic plates bonded in the middle part is used to generate the first bending mode, whereas the other four on the two sides are set for the excitation of the second bending mode; their superimposition can produce elliptical movements on the two ends of the beam, which can rotate a disk-shaped rotor. Compared with the traditional ring-shaped traveling-wave Piezoelectric Actuator, the proposed Actuator has a simpler structure and operating principle; it also gives a new mode for rotary driving. The resonance frequencies of the first and second bending modes were designed to be close at about 21.1 kHz. The maximum no-load speed and torque were tested to be 158 r/min and 0.053 N · m, respectively. The prototype achieved a power density of 19.0 W/kg under a weight of 15.8 g. The proposed combination plan of the first and second bending modes is very suitable for constructing a small-size Piezoelectric Actuator, which exhibits merits for application in small systems.

  • The working principle and excitation method of a step peristalsis Piezoelectric Actuator
    2015 Symposium on Piezoelectricity Acoustic Waves and Device Applications (SPAWDA), 2015
    Co-Authors: Wei-shan Chen
    Abstract:

    A step peristalsis Actuator using Piezoelectric stacks is proposed, designed and analyzed. The proposed Actuator contains four Piezoelectric stacks located in U-shaped: the two horizontal Piezoelectric stacks are used to push the runner, while the two vertical Piezoelectric stacks are used to change the contact states between the two feet and the runner. And the working principle for bidirectional-linear-driving is discussed. According to the working principle, the exciting method is developed to obtain the sequence control signals of the Piezoelectric stacks. It is found that the step peristalsis Piezoelectric Actuator can achieve the accuracy of nanometer and be used as a bidirectional Actuator. At last, the driving power of the step peristalsis Piezoelectric Actuator is investigated by theoretical analysis and designed. At present, the proposed design can be used as a long-stroke, ultra-precision and bidirectional Piezoelectric Actuator.

  • Study on the exciting method for Piezoelectric Actuator using bending hybrid modes
    2015 Symposium on Piezoelectricity Acoustic Waves and Device Applications (SPAWDA), 2015
    Co-Authors: Ding-wen Wang, Wei-shan Chen
    Abstract:

    A new bending-hybrid-modes Piezoelectric Actuator was designed, and analyzed. The two operating principles using the whole piece of PZT ceramic plates were discussed, and compared with the traditional operating principle using the half piece of PZT ceramics. The effects of the no polarization part on the bending resonance frequencies were studied by modal analysis. Then, harmonic analysis was developed to obtain the electromechanical coupling factor. The effect of the size of no polarization part on the electromechanical coupling factor was obtained. As last, the vibration trajectories of the two tip ends were investigated by transient analysis. The two tip ends generated elliptical movements when the two bending vibrations were superimposed. The study gives detail discussion about the exciting methods for bending vibration of a bolt-clamped transducer. The analysis results can guide the design of the Piezoelectric Actuator using bending hybrid modes.

Shuaishuai Zhao - One of the best experts on this subject based on the ideXlab platform.

  • vibration active control circuit optimized structure based on distributed Piezoelectric Actuator
    2012
    Co-Authors: Yao Jun, Zhang Jun, Mingge Xu, Xiufeng Zhou, Shuaishuai Zhao
    Abstract:

    The utility model relates to a vibration active control circuit optimized structure based on a distributed Piezoelectric Actuator, comprising a distributed Piezoelectric actuating plate, a Piezoelectric beam an a circuit structure, wherein the distributed Piezoelectric actuating plate is connected with the circuit structure and the Piezoelectric beam through wires. The optimized structure can conveniently change the polarity of the Piezoelectric Actuator, can overcome the difficulty that the traditional Actuator can not excite complex vibration, is novel in design, can be widely used for practice, can increase the active vibration control effect of the distributed Piezoelectric structure and can satisfy the demands of multi-mode control through adjusting and increasing and decreasing the circuit of the structure. The vibration active control circuit optimized structure based on a distributed Piezoelectric Actuator has a better utility value and a wide application prospect.

  • optimized structure based on vibration active control circuit of distributed Piezoelectric Actuator and optimization method thereof
    2012
    Co-Authors: Yao Jun, Zhang Jun, Mingge Xu, Xiufeng Zhou, Qing Deng, Shuaishuai Zhao
    Abstract:

    The invention relates to an optimized structure based on a vibration active control circuit of a distributed Piezoelectric Actuator. The structure comprises distributed Piezoelectric Actuators, a Piezoelectric beam, and circuit structures; and the distributed Piezoelectric Actuators are connected with the circuit structures and the Piezoelectric beam through wires. According to the structure, a pole direction of a Piezoelectric Actuator can be changed conveniently and a problem that a traditional Actuator can not excite complicated vibration can be solved; therefore, the structure is an optimized one that has a novel design and can be widely applied to active control of a distributed Piezoelectric Actuator in practice. Besides, an active vibration control effect of a distributed Piezoelectric structure is improved; and a multi-mode control can be realized by adjustment and increase or decrease of a circuit of the structure. In addition, the optimization method based on the vibration active control circuit of the distributed Piezoelectric Actuator comprises five steps. According to the invention, the structure and the method have good practical values and wide application prospects in the structure vibration active control field.