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37 results on '"Zhu, Denglin"'

2. Study on Design and Performance of a Bionic Fish Driven by Four IPMC Fins

Author

Ji, Yujun, Tang, Gangqiang, Zhao, Chun, Pan, Yifan, Zhu, Denglin, Wang, Yanjie, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Yang, Huayong, editor, Liu, Honghai, editor, Zou, Jun, editor, Yin, Zhouping, editor, Liu, Lianqing, editor, Yang, Geng, editor, Ouyang, Xiaoping, editor, and Wang, Zhiyong, editor

Published
2023
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21. Design and Fabrication of an IPMC Actuated Micro-Pump With Inner Petal-Shaped Diaphragm

Author

Zicai Zhu, Yanjie Wang, Minzhou Luo, Zhu Denglin, Jiale Wang, and Zhao Chun

Subjects
010302 applied physics, Fabrication, Materials science, Back pressure, business.industry, Micropump, 3D printing, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Volumetric flow rate, Deflection (engineering), 0103 physical sciences, Composite material, 0210 nano-technology, business, Actuator, Voltage
Abstract

As a key fluid controlled component, micropumps have been widely used in the fields of electronics and biology. The core of pumping-system is made of an actuating diaphragm, closed cavity body and valve, in which diaphragm plays a more vital role. As a promising material candidate for micropump actuating diaphragm, Ionic polymer-metal composites (IPMC) can produce a linear stroke under low input voltages by reasonable shape design (general 3V). In this paper, we integrate an inner petal-shaped IPMC as an actuating diaphragm into micropump to achieve fluid migration. First, we separately fabricated 8 petal-shaped IPMC actuators with the dimension of 1.0cm, 1.5cm and 2.5cm in diameter. And then we measured their electromechanical responses under 1–3V DC and AC voltage, respectively. After that, we assembled the micropump prototype with pump body by 3D printing technology and the petal-shaped IPMC diaphragm, and performed experimental characterization of the prototype. The experimental results revealed that the circular inner petal-shaped IPMC actuator with 25 mm in diameter produces a maximum deflection up to 0.7 mm at 3V DC voltage. When the voltage amplitude rises from 0.5V to 3V at 1Hz sinusoidal, the flow rate varied from 162μL/min to 1611μL/min, and back pressure reached up to 71mm-H 2 O.

Published
2018

23. Local Stereo Matching: An Adaptive Weighted Guided Image Filtering-Based Approach.

Author

Zhang, Ben and Zhu, Denglin

Subjects
*BINOCULAR vision, *COMPUTER vision, *REGULARIZATION parameter, *COMPUTER systems, *INTELLIGENT transportation systems, *ALGORITHMS
Abstract

Innovative applications in rapidly evolving domains such as robotic navigation and autonomous (driverless) vehicles rely on binocular computer vision systems that meet stringent response time and accuracy requirements. A key problem in these vision systems is stereo matching, which involves matching pixels from two input images in order to construct the output, a 3D map. Building upon the existing local stereo matching algorithms, this paper proposes a novel stereo matching algorithm that is based on a weighted guided filtering foundation. The proposed algorithm consists of three main steps; each step is designed with the goal of improving accuracy. First, the matching costs are computed using a unique combination of complementary methods (absolute difference, Census, and gradient algorithms) to reduce errors. Second, the costs are aggregated using an adaptive weighted guided image filtering method. Here, the regularization parameters are adjusted adaptively using the Canny method, further reducing errors. Third, a disparity map is generated using the winner-take-all strategy; this map is subsequently refined using a densification method to reduce errors. Our experimental results indicate that the proposed algorithm provides a higher level of accuracy in comparison to a collection of the existing state-of-the-art local algorithms. [ABSTRACT FROM AUTHOR]

Published
2021
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