Yuan Ding

Hefei University of Technology

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Co-Authors

Jiping Zhu

Hefei University of Technology

Paul C. Chan

New Jersey Institute of Technology

Xiang Li

Hubei University of Technology

John R. Schuring

New Jersey Institute of Technology

Yu Zhu

Tsinghua University

Weihao Tang

Hefei University of Technology

Xin Li

Tsinghua University

Chuxiong Hu

Tsinghua University

Leijie Wang

Tsinghua University

Zhiwei Chen

Hefei University of Technology

Cooperative Institutions

Hefei University of Technology

Tsinghua University

Zhejiang University

Nanjing University of Aeronautics and Astronautics

University of Science and Technology of China

Shanghai Jiao Tong University

Sun Yat-sen University

State Key Laboratory of Tribology

Shandong University

United States Geological Survey

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Top-down methodology in industrial mixed-signals design

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2005)

Eric C. Liao Adam Postuła Yuan Ding

Analogue and mixed-signal designs are fast becoming significant in System-On-Chip (SoC) designs as digital computational cores need to interface with the real world. Cellular phones, magnetic disk drives, speech recognition hardware and other 'digital' innovations in fact rely on a core of analogue circuitry. Mature digital CAD tools competently handle the digital portions of SoC designs. This is not true for analogue and mixed-signals components, still designed manually using time-consuming techniques. A good top-down design methodology can drastically reduce the design time of analogue components in SoCs and allow comprehensive functionality verification. This paper contains a critical survey of current design processes and tools, a top-down design case study and introduces MIX-SYN, a new platform for fast-tracking exploration and design time for the analogue and mixed-signals design industry.

Mixed-signal integrated circuit

Integrated circuit design

Interface (matter)

Design methods

10.1117/12.637866

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Citations (2)

Prepartion and characterization of chemical plating Cu - Ni - P onto carbon nanotubes

Yuan Ding

Ni - Cu - P alloys have been deposited on the surface of carbon nanotubes (CNTs) through chemical plating techniques. Thus, composite nano - materials have been obtained. The composite materials obtained through chemical deposition have been characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The alloys analyzed by XRD are made up of face - centered cubic (fcc) Cu and amorphous Ni - P. The composite carbon nanotubes observed by TEM, alloy grains on the CNTs surfaces are uniform and nano - sized. Cu - Ni - P alloys are spheric.

Plating (geology)

Carbon fibers

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Temperature Rise Rapid Prediction for High-Power Linear Ultrasonic Motors in High Vacuum

2021 24th International Conference on Electrical Machines and Systems (ICEMS) (2023)

Yuan Ding Xiang Li Chaohao Kan Taian Ren

This paper presented an improved thermal network model for temperature rise rapid prediction of high-power linear ultrasonic motor (HPLUM) in high vacuum. The particularity of the heat conduction of piezoelectric materials is considered in the presented thermal circuit elements. The overall losses including mechanical damping losses and the three internal losses in piezoelectric elements, as well as the impact and friction losses occurring in the contact interface between the stator and the mover were calculated analytically. Then the calculated losses were used as the thermal sources inputted to the developed thermal network to predict the transient and steady-state temperature rise of the motor in high vacuum. Finally, the FEM-based temperature field analysis was conducted to validate the developed rapid thermal prediction model of HPLUM under high vacuum condition.

Ultrasonic motor

Transient (computer programming)

10.1109/icems59686.2023.10345262

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Citations (1)

MOF-derived MnO/C composites as high-performance lithium-ion battery anodes

Synthetic Metals (2021)

Jiping Zhu Xiuxiu Zuo Xiang Chen Yuan Ding

Nanosheet

Carbon fibers

Particle (ecology)

10.1016/j.synthmet.2021.116872

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Citations (23)

Unified wrench model of an ironless permanent magnet planar motor with 2D periodic magnetic field

IET Electric Power Applications (2017)

Yu Zhu Yuan Ding Ming Zhang Feng Liu Chuxiong Hu

An ironless permanent magnet planar motor (IPMPM) is a promising multi‐degree‐of‐freedom driving device in many motion systems. In this study, a unified wrench model (UWM) of an IPMPM with two‐dimensional (2D) periodic magnetic field is proposed by transforming the integral terms of the Lorentz force. The UWM is available for coils with arbitrary shape and arbitrary orientation and describes the general form of the wrench excited by all the harmonic components of the magnetic field. The following investigation shows that the existing (semi‐) analytical models are special cases of the UWM. As a useful extension, a rapid modelling method based on the UWM is presented to reduce the modelling difficulty. Finally, the proposed UWM and the rapid modelling method are verified by triangular‐shaped coils in different orientations.

Wrench

10.1049/iet-epa.2017.0605

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Citations (12)

Multi-Domain Optimization Design for a Bimodal Linear Ultrasonic Motor with Double Driving Feet

2021 24th International Conference on Electrical Machines and Systems (ICEMS) (2023)

Xiang Li Yuan Ding Yangze Li

In this paper, an improved optimization design is conducted for a bimodal linear ultrasonic motor with respect to a set of multi-domain design parameters and constraints. Furthermore, the contact-based operating condition of the stator is considered such that the output performance parameters can be accurately evaluated enabling their use in a performance-based objective function for the multi-domain design optimization. The proposed methodology with respect to the geometry-mechanical-electrical multi-domain optimization parameters is verified by the optimization design of a bimodal linear ultrasonic motor with double driving feet.

Ultrasonic motor

10.1109/icems59686.2023.10344948

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An Fe₂O₃/Mn₂O₃ Nanocomposite Derived from a Metal‐Organic Framework as an Anode Material for Lithium‐ion Batteries

ChemistrySelect (2022)

Zhiqiang Yang Jiping Zhu Weihao Tang Yuan Ding

Abstract A facile and efficient coprecipitation was used to synthesize metal‐organic framework (MOF), which was used as the precursor to prepare Fe 2 O 3 /Mn 2 O 3 nanocomposite as anode material for lithium‐ion batteries (LIBs). Fe 2 O 3 /Mn 2 O 3 nanocomposite (synthesized by terephthalic acid) proved to show superior electrochemical performance compared to the single component, with a capacity of 1016 mA h g −1 after 240 cycles at 0.5 A g −1 , capacity retention reached 114 %. This can be attributed to the uniform nanostructure brought by the MOF precursor and the stepwise volume change process of the two metal oxides, which leads to a higher electrical conductivity with a more stable structure. Meanwhile, this novel method for the synthesis of heterogeneous structural materials could open the way for the preparation of other high‐performance hybrid materials in LIBs.

Coprecipitation

10.1002/slct.202203107

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Citations (2)

Equivalent Circuit Modeling for V-Shape Linear Ultrasonic Motor

Pengtao Guo Yuan Ding Xiang Li Zhiyuan Yao

This work presented an improved equivalent circuit model (ECM) for a typical V-shape linear ultrasonic motor considering the real contact-based operating condition. A four terminal ECM is used to model the energy conversion of the stator under contact-based operating condition, where a nonlinear RC branch with an adjustable capacitance is included in mechanical branch for capturing the variable contact stiffness under different preloads. The friction drive mechanism is modeled by a thyristor rectifier with RL load to characterize the intermittent contact characteristics in standing-wave ultrasonic motors. The output terminal voltage of the rectifier is used as the input to a RL type ECM of the mover. Finally, the dynamics of the motor including the electrical admittance characteristics of the stator under contact-based boundary, the dead-zone behavior and the transient velocity response were validated and discussed by the proposed ECM.

Ultrasonic motor

Rectifier (neural networks)

Admittance

10.1109/spawda56268.2022.10045911

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Citations (1)

Analysis of Dynamic Characteristics of self-aligning Ball Bearing

Journal of Southeast University (2010)

Yuan Ding Shuyun Jiang

A dynamics model of the self-aligning ball bearing is proposed based on the Jones-Harris method (JHM), and a computer program is developed to solve the equations by using the Newton-Raphson method. A parametric analysis of the centrifugal force and the gyroscopic moment, the contact loads, the contact angles, the radial deformation and the radial stiffness is carried out. The analytical results show that the applied loads and the rotational speed are two main factors that can influence the distributions of the contact loads and values of the contact angles. The centrifugal force and the gyroscopic moment increase with the increase in the rotational speed, resulting in the decrease of the inner raceway contact load and the increase of the outer raceway contact load. The outer raceway contact angle increases under the centrifugal force; on the contrary, the inner raceway contact angle decreases. Furthermore, the differences between the inner and the outer contact angles increase with the increase in the rotational speed. The higher rotational speed results in the decrease in radial stiffness for the self-aligning ball bearing, and the raceway curvature coefficient, to some extent, also influences the radial stiffness.

Raceway

Ball (mathematics)

Contact force

Contact Mechanics

Source

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Citations (1)

Low‐Temperature Growth of Hard Carbon with Graphite Crystal for Sodium‐Ion Storage with High Initial Coulombic Efficiency: A General Method

Advanced Energy Materials (2019)

Xun Zhao Yuan Ding Qi Xu Xiao Yu Yong Liu

Abstract Practical application of hard carbon materials in sodium‐ion batteries (SIBs) is largely limited by their low initial coulombic efficiency (ICE), which may be improved by increasing the graphitization degree. However, biomass‐derived hard carbon is usually nongraphitizable and extremely difficult to graphitize by direct heating even at 3000 °C. Herein, a general strategy is reported for fabricating hard carbon materials with graphite crystals at 1300 °C promoted by external graphite that serves as a crystal template for the growth of graphite crystals. The graphite crystals enable the contacted pseudographitic domains with a high‐level ordered structure, large domain size, and low defects, leading to an enhanced ICE. The obtained hard carbon materials with graphite crystals, using the carbonized eggshell membranes, and sucrose‐derived microsphere as precursors, achieve very high ICE of 89% and 91% with reversible capacity of 310 and 301 mA h g −1 , respectively. Therefore, using external graphite to promote high‐level ordering pseudographitic domains at low temperature is quite useful to improve ICE for SIB applications.

Carbon fibers

Crystal (programming language)

10.1002/aenm.201803648

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Citations (170)