Chengming Zhang

Harbin Institute of Technology

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i-10 index

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Co-Authors

Liyi Li

Harbin Institute of Technology

Mingyi Wang

Harbin Institute of Technology

Liyi Li

Harbin Institute of Technology

Baiping Yan

Guangdong University of Technology

Jiwei Cao

Harbin Institute of Technology

Qingbo Guo

Harbin University of Science and Technology

Jiangpeng Zhang

Kunming University of Science and Technology

Jiaxi Liu

Harbin Institute of Technology

David Gerada

University of Nottingham

Xintong Zhang

University of California, San Diego

Cooperative Institutions

Chinese Academy of Sciences

132

Harbin Institute of Technology

104

University of Chinese Academy of Sciences

Zhejiang University

Shanghai Jiao Tong University

Tsinghua University

Chinese Academy of Medical Sciences & Peking Union Medical College

Sun Yat-sen University

Peking University

Shandong University

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Research Field

Analysis and Optimization of Thrust Characteristics of Tubular Linear Electromagnetic Launcher for Space-Use

2008 14th Symposium on Electromagnetic Launch Technology (2008)

Baoquan Kou Liyi Li Chengming Zhang

Release-launch is a fundamental operation in space platform. Not like traditional land-base launcher, space-base launcher is more flexible and more efficient. Tubular linear electromagnetic launcher (TLEML), which provides higher force density, simple structure and no unilateral magnetic force, compared with the flat linear electromagnetic launcher, is more suitable for space platform. It can easily meet the demand such as little volume, light weight and high control precision. This paper analyzes and optimizes the thrust characteristics of tubular linear permanent magnet synchronous motors (TL-PMSM) for electromagnetic launcher, including different topologies, interior PMs (IPM) and surface-mounted PMs (SPM). First, build up the finite element model for the two kinds of TLEML and calculate the magnetic field. Then thrust force fluctuation figures are obtained by finite element analysis considering the pole/arc ratio, the pole pitch and the inner diameter/outer diameter ratio of the stator. The result shows that it can improve the thrust characteristic and decrease the cogging force by optimizing the parameters of the motor.

Base (topology)

Force density

10.1109/elt.2008.16

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Citations (4)

Robustness improvement of predictive current control for PMLSM integrating adaptive internal model with time delay compensation

2021 24th International Conference on Electrical Machines and Systems (ICEMS) (2017)

Rui Yang Mingyi Wang Chengming Zhang Liyi Li

This paper presents a robustness-improving discrete-time current controller utilizing predictive current control (PCC) for permanent magnet linear synchronous motor (PMLSM). The stability and robustness of the PCC system is highly affected by the parameters mismatch between the controller and the plant, and the inherent digital control delay can limit the bandwidth. Toward this, an integrated method considering both the parameters variation utilizing an adaptive internal model estimation with improved variable-gain adaptive law and the time delay compensation in discrete form is proposed. Validity and effectiveness of the proposed method is demonstrated by the simulation and experimental results.

Robustness

Internal model

Model Predictive Control

Digital Control

10.1109/icems.2017.8056194

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Citations (7)

Dynamic Decoupling Compensation for Six Degrees of Freedom Maglev Planar Motor Based on Nonlinear Extended State Observer

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

Minghong Liu Mingyi Wang Junchi Li Chengming Zhang Liyi Li

The fine motion system is a key component of precision IC manufacturing equipment such as lithography machines. It is essentially a six degrees of freedom (DOF) maglev planar motor, which is driven by voice coil motor (VCM), can achieve high-precision step scanning movement and leveling and focusing movement. However, due to the inherent thrust fluctuation of VCM and the inevitable error caused in the process of equipment manufacturing and installation, the decoupling of the motor system is not complete, and crosstalk exists between each DOF, which reduces the performance indicators of the motor system. In order to solve the problem of incomplete decoupling among the various DOF, this paper firstly describes the static decoupling control strategy for the six DOF maglev planar motor system, and then proposes a control strategy using the nonlinear extended state observer (NLESO) to estimate the total disturbance and dynamically compensate. Both simulation and experimental results indicate that the proposed control strategy can effectively suppress disturbance and improve the dynamic response and tracking accuracy of the system.

Maglev

Decoupling (probability)

Observer (physics)

Voice coil

10.1109/icems59686.2023.10345215

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Citations (1)

Analytical Model of Magnetic Field of a Permanent Magnet Synchronous Motor With a Trapezoidal Halbach Permanent Magnet Array

IEEE Transactions on Magnetics (2019)

Xintong Zhang Chengming Zhang Jikun Yu Pengcheng Du Liyi Li

This paper presents an analytical model of magnetic field of a permanent magnet synchronous motor (PMSM) with a trapezoidal Halbach permanent magnet array (THPMA). Compared with conventional Halbach array, the shape of each magnet in THPMA is transformed from rectangle to trapezium in polar coordinates. The THPMA is delaminated indefinitely radially and each layer is approximately considered to be a conventional Halbach array. The air-gap magnetic field of each layer is analyzed with the scalar magnetic potential. Then, the air-gap magnetic field of the THPMA is obtained by superposing magnetic fields of all layers. The validity of the analytical model is verified by a finite-element model (FEM). The air-gap flux density is optimized by adjusting the center angle coefficients of the THPMA, and a no-load phase back electromotive force (EMF) with the harmonic distortion rate (THD) of 0.75% is obtained by FEM. The back EMF is basically consistent with the measured result of a prototype motor.

Halbach array

Counter-electromotive force

Electropermanent magnet

Scalar potential

Electromotive force

Pole piece

Synchronous motor

10.1109/tmag.2019.2902988

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Citations (54)

Experimental Study Capacity Fading Mechanism in Multiple Overdischarge on Lini0.5co0.2mn0.3o2 & Limn2o4/Graphite Lithium-Ion Batteries

Haibao Zhu Jun Ma Huihui Ding Huanhuan Wu Chengming Zhang

Batteries can overdischarge in practical applications, but it does not pose safety risks. However, overdischarge can have a significant impact on battery performance. In this work,LiNi0.5Co0.2Mn0.3O2 (NCM) & LiMn2O4 (LMO)/graphite batteries are used as the main body. The failure mechanism of the battery under different temperature (-10 °C, 25 °C, 45 °C) and different depth of discharge (DOD) (105% DOD and 110% DOD) is studied systematically through the electrochemical methods, scanning electron microscopy (SEM), X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS). The results show that the deep overdischarge and high temperature accelerate the degradation of electrolyte, diaphragm and collector, and cause rupture and recombination of solid electrolyte interphase (SEI) film. These result in the loss of conductivity, active substances and lithium ions, in which the loss of lithium ions plays a dominant role. Moreover, the attenuation of positive active material is mainly caused by NCM. Our research results are of great significance for researchers to understand the failure mechanism of lithium batteries under different conditions and can provide important guidance for the safe design of lithium-ion batteries.

10.2139/ssrn.4606577

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Research of Fast-Response Giant Magnetostrictive Actuator for Space Propulsion System

IEEE Transactions on Plasma Science (2011)

Liyi Li Chengming Zhang Baiping Yan Lu Zhang Xiaopeng Li

This paper presents a flow regulator based on a fast-response giant magnetostrictive actuator (GMA). The finite-element method is adopted for analyzing and optimizing the magnetic circuit structure of the GMA, and the influence of structural parameters on the driving magnetic field uniformity is summarized. Based on the analysis and output demand, a prototype of the GMA driven by a Φ5 × 40 mm giant magnetostrictive material rod is made, and a test bench is set. The result shows that the static output displacement is about 47.1 μm. With a flexure hinge working as the displacement amplification structure, the maximum opening displacement of the flow regulator is about 240 μm, and the response time is less than 1 ms. Using nitrogen (N ₂ ) as the working medium, the mass flow rate of the giant magnetostrictive regulator is 12 g/s at 3 MPa.

10.1109/tps.2010.2096480

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Citations (14)

Research on knowledge structure and sharing methods to support product innovation design

Modular Machine Tool & Automatic Manufacturing Technique (2003)

Chengming Zhang

We analyze briefly status of knowledge in the product development and necessity of implementation knowledge sharing. Considering about product life cycle, the knowledge system has been put forward to support innovation design, which includes function creation, principle creation and structure creation. We expound the principle and methods to implement knowledge sharing of product development within KBE (Knowledge-Based Engineering). Meantime, We have build platform for knowledge sharing and reuse, which support product collaborative innovation for life cycle. Finally, we have developed system for knowledge sharing and reuse of product innovation development, and it has been verified with breaker development.

Knowledge Sharing

Product innovation

Product life-cycle management

Knowledge Creation

Source

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Sintering of Ca(OH)2/CaO hydroxide heat storage materials during exothermic process and its inhibition mechanism: A reactive molecular dynamics study

Chemical Engineering Journal (2024)

Kun Wang Bochao Liu Chengming Zhang Chunhua Min Zhonghao Rao

Exothermic reaction

10.1016/j.cej.2024.158862

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HPLC Determination of Salicylic Acid in Food Additives

Chengming Zhang

HPLC was applied to the determination of salicylic acid in food additives.The sample was dissolved with mixed solvent of methanol-H2O(9+1)(containing 0.1% formic acid by vol.) and extracted ultrasonically.After filtering on 0.22 μm filtering membrane,the solution was used for HPLC analysis.The ZORBAX SB-C18 chromatographic column(4.6 mm×250 mm,3.5 μm) was used for separation and a mixture of(A) formic acid-acetonitrile(0.1+99.9) and(B) formic acid(0.1+99.9)solution mixed in different ratio were used as the mobile phase in gradient elution.Fluorimetric detection at the wavelengths of(λex) 280 nm and(λem) 450 nm was adopted.Linear relationship between values of peak area and mass concentration of salicylic acid was obtained in the range of 41.60~1 664 μg·L-1,with detection limit(3S/N) of 1.55 μg·L-1.Values of recovery of the method found were in the range of 90.4%-101.7%.

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Characteristics and EOR mechanisms of nanofluids permeation flooding for tight oil

Petroleum Exploration and Development (2020)

Bin Ding Chunming Xiong Xiangfei Geng Baoshan Guan Jingjun Pan

Tight oil reservoir development is faced with the key technical problem that "water cannot be injected and oil cannot be produced" yet. With the diphenyl ethers water-soluble (gemini) surfactants as water phase shell and C10–C14 straight-chain hydrocarbon compounds as oil phase kernel, a nanofluids permeation flooding system was prepared by microemulsion technology, and its characteristics and EOR mechanisms were evaluated through experiments. The system has the following five characteristics: (1) "Small-size liquid": the average particle size of the system is less than 30 nm, which can greatly reduce the starting pressure gradient of water injection, and effectively enter and expand the sweep volume of micro-nano matrix; (2) "Small-size oil" : the system can break the crude oil into "small-size oil" under the flow condition, which can greatly improve the percolation ability and displacement efficiency of the crude oil in the micro-nano matrix; (3) Dual-phase wetting: the system has contact angles with the water-wet and oil-wet interfaces of (46±1)° and (68±1)° respectively, and makes it possible for capillarity to work fully under complex wetting conditions of the reservoir; (4) High surface activity: the interfacial tension between the system and crude oil from a tight oil reservoir in Xinjiang is 10−3–10−2 mN/m, indicating the system can effectively improve the displacement efficiency of oil in fine pore throats; (5) Demulsification and viscosity reduction: the system has a demulsification and viscosity reduction rate of more than 80% to inversely emulsified crude oil from a tight oil reservoir in Xinjiang, so it can improve the mobility of crude oil in the reservoir and wellbore. The system can be used to increase oil production by fracturing in tight reservoirs, replenish formation energy by reducing injection pressure and increasing injection rate, and enhance oil recovery by displacement and cyclic injection, providing key technical support for effective production and efficient development and recovery enhancement of tight reservoirs.

Water flooding

10.1016/s1876-3804(20)60096-9

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Citations (37)