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期刊论文 12

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2022 1

2020 1

2018 1

2017 2

2016 1

2008 2

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B样条函数 1

五相感应电机；电子变极；滑模控制；指数响应；转矩脉动减小 1

吸附层 1

形状参数 1

惯性神经网络；反周期解；全局指数稳定；脉冲；时变延迟；双向联想记忆 1

指数多项式样条函数 1

指数平滑 1

指数模型；参数估计；线性最小二乘法；非线性拟合 1

粘度 1

自适应过滤 1

薄膜润滑 1

轴承 1

预测边坡位移 1

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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of exponential

《机械工程前沿（英文）》 2022年第17卷第2期 doi: 10.1007/s11465-022-0681-7

摘要： The inverse kinematics problems of robots are usually decomposed into several Paden–Kahan subproblems based on the product of exponential model. However, the simple combination of subproblems cannot solve all the inverse kinematics problems, and there is no common approach to solve arbitrary three-joint subproblems in an arbitrary postural relationship. The novel algebraic geometric (NAG) methods that obtain the general closed-form inverse kinematics for all types of three-joint subproblems are presented in this paper. The geometric and algebraic constraints are used as the conditions precedent to solve the inverse kinematics of three-joint subproblems. The NAG methods can be applied in the inverse kinematics of three-joint subproblems in an arbitrary postural relationship. The inverse kinematics simulations of all three-joint subproblems are implemented, and simulation results indicating that the inverse solutions are consistent with the given joint angles validate the general closed-form inverse kinematics. Huaque III minimally invasive surgical robot is used as the experimental platform for the simulation, and a master–slave tracking experiment is conducted to verify the NAG methods. The simulation result shows the inverse solutions and six sets given joint angles are consistent. Additionally, the mean and maximum of the master–slave tracking experiment for the closed-form solution are 0.1486 and 0.4777 mm, respectively, while the mean and maximum of the master–slave tracking experiment for the compensation method are 0.3188 and 0.6394 mm, respectively. The experiments results demonstrate that the closed-form solution is superior to the compensation method. The results verify the proposed general closed-form inverse kinematics based on the NAG methods.

关键词： inverse kinematics Paden–Kahan subproblems three-joint subproblems product of exponential closed-form solution

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Ultrasonic linear motor using the L-B mode Langevin transducer with an exponential horn

SHI Shengjun, CHEN Weishan, LIU Junkao, ZHAO Xuetao

《机械工程前沿（英文）》 2008年第3卷第2期页码 212-217 doi: 10.1007/s11465-008-0026-1

摘要： An ultrasonic linear motor is proposed and fabricated by using the longitudinal and bending vibration double mode bolt-clamped Langevin type transducer to meet high power and speed requirements in the aerospace and semiconductor ind

关键词： longitudinal vibration bolt-clamped semiconductor ultrasonic

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应用指数平滑技术预测边坡位移

沈良峰

《中国工程科学》 2007年第9卷第6期页码 94-97

摘要：

应用趋势型指数平滑模型根据其观测值的数据特点（具线性趋势），选取趋势型二次指数平滑的线性预测公式和相应at，bt的计算公式及合适的平滑系数值进行计算，预测了某市滑坡区５号监测点的位移量。预测结果表明，该方法应用于斜坡变形位移的预测，可使预测值与实际位移值之间的误差很小。

关键词：指数平滑预测边坡位移自适应过滤

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指数多项式均匀样条模型

赵颜利,平萍,刘凤玉

《中国工程科学》 2008年第10卷第7期页码 147-152

摘要：

给出了k（ k ≥ ３）阶指数多项式的均匀样条模型。该类模型具有很多与B 样条模型相同的性质，并且增加了一个可调节的形状参数。由该模型构造的曲线，通过改变形状参数的取值，可以调整曲线接近其控制多边形的程度。应用于CAD/CAM领域，可作为几何造型的一种新的有效模型。

关键词：指数多项式样条函数 B样条函数形状参数

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Minimization of total energy consumption in an m-machine flow shop with an exponential time-dependent

Lingxuan LIU, Zhongshun SHI, Leyuan SHI

《工程管理前沿（英文）》 2018年第5卷第4期页码 487-498 doi: 10.15302/J-FEM-2018042

摘要：

This study investigates an energy-aware flow shop scheduling problem with a time-dependent learning effect. The relationship between the traditional and the proposed scheduling problem is shown and objective is to determine a job sequence in which the total energy consumption is minimized. To provide an efficient solution framework, composite lower bounds are proposed to be used in a solution approach with the name of Bounds-based Nested Partition (BBNP). A worst-case analysis on shortest process time heuristic is conducted for theoretical measurement. Computational experiments are performed on randomly generated test instances to evaluate the proposed algorithms. Results show that BBNP has better performance than conventional heuristics and provides considerable computational advantage.

关键词： flow shop energy-aware scheduling learning effect nested partition worst-case error bound

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Reaction kinetics of CaC

Renxing Wang,Zhenyu Liu,Leiming Ji,Xiaojin Guo,Xi Lin,Junfei Wu,Qingya Liu

《化学科学与工程前沿（英文）》 2016年第10卷第4期页码 517-525 doi: 10.1007/s11705-016-1585-z

摘要： The production of CaC from coke/lime powders and compressed powder pellets are low cost and fast processes. A number of studies have reported the reaction kinetics of these reactions but they are still not well understood and the proposed kinetic models are not comparable due to differences in the reaction conditions. Therefore the reaction behavior of CaO/C powders (0.074 mm) and cubes (5 mm × 5 mm × (4.6–5.1) mm) compressed from a mixture of powders have been studied using thermal gravimetric analysis (TGA) at 1700– 1850 °C. Kinetic models were obtained from the TGA data using isoconversional and model-fitting methods. The reaction rates for the compressed feeds were lower than those for the powder feeds. This is due to the reduced surface area of the compressed samples which inhibits heat transfer from the surrounding environment (or the heating source) to the sample. The compression pressure had little influence on the reaction rate. The reaction kinetics of both the powder and the compressed feeds can be described by the contracting volume model ( ) = 3(1− ) , where is the conversion rate of reactant. The apparent activation energy and pre-exponential factor of the powder feed were estimated to 346–354 kJ?mol and 5.9 × 10 min , respectively, whereas those of the compressed feed were 305–327 kJ?mol and 3.6 × 10 min , respectively.

关键词： calcium carbide kinetic model activation energy pre-exponential factor

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Metabolic flux analysis on arachidonic acid fermentation

JIN Mingjie, HUANG He, ZHANG Kun, YAN Jie, GAO Zhen

《化学科学与工程前沿（英文）》 2007年第1卷第4期页码 421-426 doi: 10.1007/s11705-007-0077-6

摘要： The analysis of flux distributions in metabolic networks has become an important approach for understanding the fermentation characteristics of the process. A model of metabolic flux analysis of arachidonic acid (AA) synthesis in ME-1 was established and carbon flux distributions were estimated in different fermentation phases with different concentrations of N-source. During the exponential, decelerating and stationary phase, carbon fluxes to AA were 3.28%, 8.80% and 6.97%, respectively, with sufficient N-source broth based on the flux of glucose uptake, and those were increased to 3.95%, 19.21% and 39.29%, respectively, by regulating the shifts of carbon fluxes via fermentation with limited N-source broth and adding 0.05% NaNO at 96 h. Eventually AA yield was increased from 1.3 to 3.5 g · L. These results suggest a way to improve AA fermentation, that is, fermentation with limited N-source broth and adding low concentration N-source during the stationary phase.

关键词： AA different fermentation concentration N-source exponential metabolic

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基于电流滑模控制策略的五相感应电机指数响应电子变极技术 Article

Jia-qiang YANG, Rong-sen YIN, Xiao-jun ZHANG, Jin HUANG

《信息与电子工程前沿（英文）》 2017年第18卷第8期页码 1151-1166 doi: 10.1631/FITEE.1601728

摘要：现有电子变极技术可以拓宽多相感应电机系统的恒功率调速范围，但是会带来转矩脉动和转速波动。为减小电机在变极过程中的转矩脉动和转速波动，本文研究了基于电流滑模控制策略的五相感应电机指数响应电子变极技术。本技术采用双平面（d1-q1和d2-q2）矢量控制策略，使五相感应电机可以在不同的极对数模式下运行。电流滑模控制器取代了传统的PI控制器，以调节电流矢量，并且电流指数响应可以实现d1-q1和d2-q2平面之间平滑的切换。同基于PI控制的阶跃响应电子变极技术相比，本文提出的方法极大地减小了感应电机在电子变极过程中的转矩脉动和速度波动。实验结果证明了本文所提出方法的有效性。

关键词：五相感应电机；电子变极；滑模控制；指数响应；转矩脉动减小

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指数型粘度修正模型及应用

曲庆文,王梅,柴山,姚福生

《中国工程科学》 2001年第3卷第10期页码 53-58

摘要：

根据吸附理论和分子间能量的变化规律来确定表面相互作用程度，以此可定义吸附层，得出吸附层厚度的分析计算式。吸附层厚度对研究薄膜润滑是最关键的因素，是薄膜与厚膜不同分析的关键点。根据分子相互作用的基本理论及流体力学的基本定义得出指数型粘度修正的表达式，用于确定微小间隙内流体粘度的变化规律，从而建立薄膜润滑理论模型，计算薄膜润滑轴承的特性。

关键词：吸附层粘度薄膜润滑轴承

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采用线性和非线性拟合方法进行指数模型参数估计 Article

Ping YANG,Chao-peng WU,Yi-lu GUO,Hong-bo LIU,Hui HUANG,Hang-zhou WANG,Shu-yue ZHAN,Bang-yi TAO,Quan-quan MU,Qiang WANG,Hong SONG

《信息与电子工程前沿（英文）》 2017年第18卷第3期页码 434-444 doi: 10.1631/FITEE.1601683

摘要：本文探讨了通过线性和非线性拟合方法估计指数模型中的未知参数。基于多元函数极值定理及泰勒级数展开，从理论上证明了：在实验测量数据中包含噪声的情况下，通过线性拟合方法所得到的参数估计值并不能保证指数模型的残差平方和达到最小。通过数值仿真对线性和非线性拟合方法的结果进行了对比，仿真结果显示：线性方法只能获得未知参数的次优估计，但非线性方法给出更准确的结果。利用水下图像和成像距离数据对水体光谱衰减系数进行了估计，结果证实非线性拟合方法能够对参数估计准确度有明显的提升。

关键词：指数模型；参数估计；线性最小二乘法；非线性拟合

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Two-phase early prediction method for remaining useful life of lithium-ion batteries based on a neural network and Gaussian process regression

《能源前沿（英文）》 doi: 10.1007/s11708-023-0906-4

摘要： Lithium-ion batteries (LIBs) are widely used in transportation, energy storage, and other fields. The prediction of the remaining useful life (RUL) of lithium batteries not only provides a reference for health management but also serves as a basis for assessing the residual value of the battery. In order to improve the prediction accuracy of the RUL of LIBs, a two-phase RUL early prediction method combining neural network and Gaussian process regression (GPR) is proposed. In the initial phase, the features related to the capacity degradation of LIBs are utilized to train the neural network model, which is used to predict the initial cycle lifetime of 124 LIBs. The Pearson coefficient’s two most significant characteristic factors and the predicted normalized lifetime form a 3D space. The Euclidean distance between the test dataset and each cell in the training dataset and validation dataset is calculated, and the shortest distance is considered to have a similar degradation pattern, which is used to determine the initial Dual Exponential Model (DEM). In the second phase, GPR uses the DEM as the initial parameter to predict each test set’s early RUL (ERUL). By testing four batteries under different working conditions, the RMSE of all capacity estimation is less than 1.2%, and the accuracy percentage (AP) of remaining life prediction is more than 98%. Experiments show that the method does not need human intervention and has high prediction accuracy.

关键词： lithium-ion batteries RUL prediction double exponential model neural network Gaussian process regression (GPR)