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机床智能控制系统体系架构及关键技术研究进展

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机械工程学报 2021年第9期57卷 147-166页

作者：孟博洋李茂月刘献礼 wang lihui LIANG S Y 王志学哈尔滨理工大学切削加工及制造智能化技术教育部重点实验室哈尔滨150080 瑞典皇家理工学院斯德哥尔摩瑞典25175 佐治亚理工学院乔治·W·伍德拉夫机械工程学院亚特兰大美国30332

机床智能控制系统是未来智能机床领域的重要组成部分,对提高制造业核心竞争力具有重要意义。相比传统数控系统,机床智能控制系统具有更高效、稳定地加工质量,以及可代替人工经验智能判断等优点。针对现有机床智能控制系统方面的综述性... 详细信息

机床智能控制系统是未来智能机床领域的重要组成部分,对提高制造业核心竞争力具有重要意义。相比传统数控系统,机床智能控制系统具有更高效、稳定地加工质量,以及可代替人工经验智能判断等优点。针对现有机床智能控制系统方面的综述性讨论较少的情况,通过分析机床控制系统发展历程中四个阶段的特点,提出机床控制系统的智能化体系和架构。然后,从先进技术角度,详细阐述了人工智能技术、数字孪生技术以及云服务等关键技术,在机床智能控制系统中的应用。最后,通过分析智能机床面临的几大严峻挑战与应对之策,展望了未来机床智能化控制系统的发展趋势。

关键词：数控机床智能控制系统人工智能数字孪生云服务

Estimating Wheel-road Vertical Load for Nonlinear Vehicle Vibration System Based on Cubature Kalman Filter

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Estimating Wheel-road Vertical Load for Nonlinear Vehicle Vi...

Fasudil hydrochloride hydrate, a Rho-kinase inhibitor, ameliorates hepatic fibrosis in rats with type 2 diabetes

第30届中国控制与决策会议

作者： Yuexin Zhang lihui wang Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology Ministry of education School of Instrument Science and Engineering Southeast University

The vibration of vehicle is most governed by the load generated of the road roughness, which can affect comfort of vehicle and cause fatigue damage of the vehicle suspension. So knowledge of the load is very important for vehicle control systems to enhance vehicle stability and safety. During the process of the estimation, noise affects the identification accuracy, and maybe cause divergence. The cubature Kalman filter（CKF） has good accuracy performance, numerical stability and computational costs. So this paper presented a new methodology based on CKF and a recursive least-squares algorithm for estimating wheel-road vertical load. The state equations and measurement equations were established according to the second order vibration system, and RK4 was employed to discretize the continuous-time equations. The CKF was used to calculate the residual innovation sequences and the residual innovation sequences were used to calculate the vertical load. To verify the effectiveness of the identification method, numerical simulations of the five degrees of freedom vehicle vibration system subjected to white noises and four types of forces were employed. Simulation results validated and proved the feasibility of this approach.

关键词： Vertical load Five degrees of freedom vehicle vibration system Cubature Kalman filter Recursive least-squares algorithm Vehicle stability

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Chinese Medical Journal 2014年第2期127卷 225-231页

作者： Zhou Hong Fang Caixia Zhang lihui Deng Yonggui wang Mian Meng Fengling Department of Endocrinology Second Hospital of Hebei Medical University Shijiazhuang Hebei 050000 China

Background Hyperglycemia may accelerate liver ***,there is no effective treatment for liver fibrosis induced by type 2 *** study aim was to investigate whether RhoA/Rho kinase （ROCK） pathway is involved in liver fibrosis in the rats with type 2 diabetes and define the protective effects of fasudil on *** A rat model of type 2 diabetes was established by high fat diet combined with streptozotocin （30 mg/kg,intraperitoneal injection）.Animals were randomly assigned to 3 groups：control rats,untreated diabetic rats that received vehicle and fasudil-treated diabetic rats that received ROCK inhibitor fasudil hydrochloride hydrate （10 mg/kg per day,intraperitoneal injection,for 14 weeks）.The morphological features of liver were observed by HE *** of collagen in livers was determined by Masson staining and the measurement of *** mRNA expression of transforming growth factor-β1 （TGFβ1）,connective tissue growth factor （CTGF）,type-Ⅰ,and type-Ⅲ procollagen was assessed with real-time polymerase chain *** phosphorylation of myosin phosphatase target subunit-1 （MYPT1）and the protein levels of TGFβ1 and α-smooth muscle actin （α-SMA） were evaluated by Western *** Compared with control rats,untreated diabetic rats showed higher values of collagen and hydroxyproline in livers （P ＜0.01）,the phosphorylation of MYPT1 and the protein levels of TGFβ1 and α-SMA were increased （P ＜0.01）,and the mRNA expression of TGFβ1,CTGF,type-Ⅰ,and type-Ⅲ procollagen was upregulated （P ＜0.01）; compared with untreated diabetic rats,treatment with fasudil signifcantly reduced values of collagen and hydroxyproline （P ＜0.01）,and decreased the phosphorylation of MYPT1 and the levels of TGFβ1 and α-SMA （P ＜0.01）,concomitant with the downregulation of TGFβ1/CTGF,type-Ⅰ,and type-Ⅲ procollagen mRNA expression （P ＜0.01）.Conclusions Fasudil ameliorates liver fibrosis in rats with type 2 diabetes at least partly by inhibiting TG

关键词： diabetes liver fibrosis Rho kinase transforming growth factor-β1 fasudil

Study on Accumulation and Dynamic Changes of Three Carbohydrates in Jerusalem Artichoke in Natural Habitats

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Agricultural Biotechnology 2019年第3期8卷 57-63页

作者： lihui wang Xuemei SUN Long TAN Yi LI Qinghai Key Laboratory of Vegetable Genetics and Physiology Agriculture and Forestry Sciences Institute of Qinghai University

Two varieties of Jerusalem artichoke (early maturing variety Qingyu No.1 and middle maturing variety Qingyu No.2),which were bred independently by Research and Development Center of Jerusalem Artichoke,Qinghai Academy of Agriculture and Forestry,were used as materials,and the content and dynamic changes of three kinds of carbohydrates (sucrose,glucose and fructose) in various organs of Jerusalem artichoke in different periods in two natural habitats (water plain and low hill dry land) were *** results showed that the content of the three kinds of carbohydrates in Qingyu No.1 and Qingyu No.2 in the water plain and low hill dry land was relatively high in late June and late *** total content of the three carbohydrates in Qingyu No.1 peaked earlier than that of Qingyu *** total content of the three carbohydrates in the water plain peaked earlier than that of the low hill dry *** the whole growth period,the total content of the three carbohydrates in the stems and roots of Jerusalem artichoke was higher than that of the *** the leaves,fructose accumulation was relatively obvious in the whole growth period,and the content was high,followed by *** the stems and roots,fructose content was high,followed by *** the tubers,glucose accumulation was obvious,and sucrose content was lower than glucose and fructose *** the tubers were harvested,fructose content was high.

关键词： Jerusalem artichoke Carbohydrates Sucrose Glucose Fructose Dynamic changes

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薄壁件铣削过程加工变形研究进展

航空学报 2022年第4期43卷 99-124页

作者：岳彩旭张俊涛刘献礼陈志涛 Steven Y.LIANG lihui wang 哈尔滨理工大学机械动力工程学院先进制造智能化技术教育部重点实验室哈尔滨150080 佐治亚理工学院乔治·W·伍德拉夫机械工程学院亚特兰大30332 瑞典皇家理工学院斯德哥尔摩25175

机床加工性能和刀具切削性能的发展使得薄壁件的高效率和高精密加工成为可能,也使得薄壁件在航空航天领域得到更广泛应用。薄壁零件结构复杂、刚度低,在铣削过程中易发生变形,因此精准预测与控制薄壁件的加工变形是机加工领域亟需解决... 详细信息

机床加工性能和刀具切削性能的发展使得薄壁件的高效率和高精密加工成为可能,也使得薄壁件在航空航天领域得到更广泛应用。薄壁零件结构复杂、刚度低,在铣削过程中易发生变形,因此精准预测与控制薄壁件的加工变形是机加工领域亟需解决的工艺难题。通过对薄壁件分类以及加工工艺分析,归纳总结引起薄壁件加工变形的因素,对加工变形影响最为关键的铣削力计算模型进行简述;结合国内外薄壁件变形预测与控制方法的研究,以弹塑性和数值模拟方法对薄壁件加工变形进行预测,通过加工工艺优化、辅助支撑技术、高速切削技术和数控补偿技术等方法对薄壁件加工过程的变形量进行控制;基于数据驱动数字孪生体的更新迭代,实现薄壁件实际加工过程的孪生及薄壁件变形预测与控制,构建了以数字孪生为平台的薄壁件加工变形预测与控制理论框架;最后对数字孪生在薄壁件加工变形预测及控制的发展与应用提出展望。

关键词：薄壁件加工变形铣削力模型变形预测与控制数字孪生

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基于解析方法的TANH材料本构模型研究

机械工程学报 2020年第9期56卷 252-264页

作者：郝小乐岳彩旭陈志涛刘献礼 LIANG SY wang lihui 严复钢哈尔滨理工大学先进制造智能化技术教育部重点实验室哈尔滨150080 佐治亚理工学院乔治•伍德拉夫机械工程学院美国亚特兰大30332 瑞典皇家理工学院斯德哥尔摩25175瑞典

TANH材料本构模型在Johnson-Cook(J-C)材料本构模型基础上考虑了应变软化,可以进一步揭示切削过程中大变形高应变速率下材料的本质属性。为了验证TANH材料本构模型修正系数优化方法的精度,针对典型难加工材料Ti6Al4V的车削过程,在考虑... 详细信息

TANH材料本构模型在Johnson-Cook(J-C)材料本构模型基础上考虑了应变软化,可以进一步揭示切削过程中大变形高应变速率下材料的本质属性。为了验证TANH材料本构模型修正系数优化方法的精度,针对典型难加工材料Ti6Al4V的车削过程,在考虑热力耦合效应的基础上建立了基于TANH材料本构模型的正交切削力预测模型,切削力试验结果与预测结果吻合良好。同时,揭示了TANH材料本构模型修正系数与切削力之间的联系。基于TANH材料本构模型所建立的切削力预测模型输入参数仅包括切削用量、刀具几何参数和材料物理参数。提出了一种TANH材料本构模型修正系数选择区间的优化方法,并分析了切削力受TANH材料本构模型修正系数变化的敏感度,然后对修正系数进行了优化,在保证精度的前提下提高了切削力仿真效率。修正系数优化后的TANH材料本构模型明显捕捉到了应变硬化率对应变速率的依赖特性。研究结果为TANH本构模型深入研究及应用提供了理论基础。

关键词： TANH材料本构模型热力耦合切削力预测模型应变硬化率敏感度分析

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钛合金铣削过程刀具前刀面磨损解析建模

机械工程学报 2021年第23期57卷 232-240页

作者：岳彩旭杜延杰李晓晨陈志涛刘献礼 Steven Y.LIANG lihui wang 哈尔滨理工大学先进制造智能化技术教育部重点试验室哈尔滨150080 佐治亚理工学院乔治·W·伍德拉夫机械工程学院亚特兰大30332美国瑞典皇家理工学院斯德哥尔摩25175瑞典

钛合金Ti6Al4V作为典型的航空航天难加工材料,在其铣削过程中硬质合金刀具的磨损会降低加工过程稳定性,进而影响加工效率和已加工表面表面质量。刀具前刀面磨损会导致刀具刃口强度降低,并影响切屑的流向和折断情况。针对前刀面磨损机理... 详细信息

钛合金Ti6Al4V作为典型的航空航天难加工材料,在其铣削过程中硬质合金刀具的磨损会降低加工过程稳定性,进而影响加工效率和已加工表面表面质量。刀具前刀面磨损会导致刀具刃口强度降低,并影响切屑的流向和折断情况。针对前刀面磨损机理进行分析并构建了月牙洼磨损深度预测模型。首先运用解析方法构建了前刀面应力场模型,得到切屑在前刀面滑动过程中的刀具前刀面应力分布情况及磨损位置。基于刀-屑接触关系的基础上建立了前刀面温度场模型。然后,基于所得刀具前刀面应力与温度分布,构建综合考虑磨粒磨损、粘结磨损与扩散磨损的铣刀月牙洼磨损深度预测模型,获得月牙洼磨损预测曲线;结合铣刀月牙洼磨损带沿切削刃方向分布的特点,建立了随时间变化的铣刀前刀面磨损体积预测模型。最后通过试验验证了切削宽度对前刀面磨损的影响规律,预测结果与试验测量值具有较好的吻合性。结果表明随着切削宽度的增加,月牙洼磨损深度及前刀面磨损体积都随之增加。研究结果为钛合金铣削用刀具的设计和切削参数的合理选择提供了理论基础。

关键词： Ti6Al4V 铣削前刀面磨损磨损预测刀-屑接触关系

发酵调味品中真菌毒素污染状况及生物脱毒方法研究进展

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食品科学 2025年第1期46卷 304-314页

作者：王李惠付金慧李超伟张莉夏小龙李丝桐张梦梅陈阴竹刘书亮胡凯弟赵宁李琴李建龙四川农业大学食品学院四川雅安625014 四川省轻工业研究设计院四川成都610000 广安市食品药品检验检测中心四川广安638600

国内外不同发酵调味品中真菌毒素污染情况各不相同,这可能与产品原料、地理位置、季节等因素差异有关。微生物能够通过细胞壁的吸附作用或酶催化作用将真菌毒素转化为低毒或无毒物质,以保证发酵调味品的食用安全。随着生物脱毒研究的深... 详细信息

国内外不同发酵调味品中真菌毒素污染情况各不相同,这可能与产品原料、地理位置、季节等因素差异有关。微生物能够通过细胞壁的吸附作用或酶催化作用将真菌毒素转化为低毒或无毒物质,以保证发酵调味品的食用安全。随着生物脱毒研究的深入,许多能够高效降解真菌毒素的菌株被筛选出来,而食源及可应用于食品的对真菌毒素有降解能力的安全菌株研究依然较少。基于此,本文总结发酵调味品中真菌毒素的污染现状,重点综述不同来源的可降解真菌毒素的菌株及菌株细胞中的降解酶,旨在为减少发酵调味品中有害真菌及其毒素污染提供参考。

关键词：发酵调味品真菌毒素生物脱毒降解

Numerical Calculation of Viscous-Elastic Fluid Flooding Residual Oil Film in the Complex Pore

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Open Journal of Fluid Dynamics 2013年第3期3卷 147-151页

作者： Lili Liu Chao Yu lihui wang Lu Liu Daqing Petroleum Equipment Group Daqing China Department of Petroleum Engineering Northeast Petroleum University Daqing China

In order to analyze the stress and deformation of different permeability of residual oil film in the complex pore, which are affected by the viscous-elasticity of the fluid, the hydrodynamic displacement mechanism is explored from the stand-point of hydrodynamics, that is, the residual oil film displaced by alternating injection of different concentrations of the polymer solution, viscous-elastic fluid flow equation is established in the complex pore by choosing continuity equation, motion equation and the upper convected Maxwell constitutive equation. The flow field is computed by using the method of numerical analysis. Not only the stress and deformation of residual oil film on the different permeability of micro pores, but also the analysis of the flooding mechanism of alternating injection of different concentrations of the polymer solution is got. The results show that the larger the viscous-elasticity of polymer solution is, the bigger the normal deviatoric stress acting on the residual oil film is;the distribution of normal deviatoric stress has the abrupt change. The stronger the viscous-elasticity of the polymer solution is, the bigger the horizontal stress difference acting on the residual oil film is and the more obvious the deformation is;the high-concentration polymer solution is suitable for high-permeability micro pores. Low-concentration polymer solution is suitable for medium and low-permeability micro pores. Alternating injection of polymer solution can improve Volumetric Sweep Efficiency and increase the deformation of residual oil film, which is conducive to enhancing oil recovery.

关键词： Complex Pore Residual Oil Film Deformation Viscous-Elasticity Permeability