Table of Content

25 January 2021, Volume 41 Issue 1

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A method for mining decision rules based on decision formal context

MAO Hua,ZHENG Zhen,LIU Xiaoqing

2021, 41(1):  1-6.  DOI: 10.3969/j.issn.1000-1565.2021.01.001

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Aiming at the problem of extraction of decision rules in mass decision formal context, this paper proposes a novel algorithm by combining frequent closed itemsets and decision formal context to extract no redundant decision rules.The algorithm combines the idea of depth-first searches(DFS)and the relationship of conceptual node in concept lattice and improves an existed algorithm of mining frequent closed itemsets in the concept lattice.Using this algorithm,the frequent decision concept lattice of the decision formal context is obtained so that the huge database is compressed. Meanwhile, no redundant decision rules are extracted. After analysis,this algorithm has a lower complexity and is easy to mine decision rules in decision formal context.

Higgs mass corrections in the B-LSSM

LI Wei,WANG Yinglong

2021, 41(1):  7-14.  DOI: 10.3969/j.issn.1000-1565.2021.01.002

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In the extension of the minimum supersymmetry model with local B-L gauge symmetry(B-LSSM), the Higgs particle mass is corrected by a single circle radiation by the effective potential method, and numerical analysis is carried out. According to the Higgs particle theoretical quality and experimental data further restricting the relevant parameters of B-LSSM and constraining the parameter space, thereby making the parameter space of B-LSSM more complete.

Electronic structures and optical properties of Mn doped GaSb

ZHANG Hexiang, YANG Weixia, LIN Xueling, PAN Fengchun

2021, 41(1):  15-22.  DOI: 10.3969/j.issn.1000-1565.2021.01.003

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We use the LDA+U method of the first-principles calculation to calculate the band structures and optical properties of Mn doped GaSb semiconductor material. The computed results revealed that Mn can increase the absorption amplitude of Mn doped GaSb(Mn-GaSb)semiconductor system in the infrared and far-infrared region. Moreover, Mn substituted Ga(Mn@Ga)defect can improve the Mn-GaSb’s photocatalytic performances effectively. The impurity level induced by Mn can reduce the band gap of the doped system effectively. Compared with that of undoped GaSb system, the static dielectric constant of the function in the Mn-GaSb system is also heighted. The optical properties of Mn@Ga doped system are not only related to the molar concentration of Mn atoms, but also to the uniform Mn atoms. Our results show that the uniform Mn can prevent the formation of electron-hole pairs recombination centers, and the optical absorption peak and absorption range of the Mn-GaSb system are both the biggest in the infrared region with the Mn molar concentration being 12.5%.

Binding properties of a dinuclear ruthenium complex to c-myc G-quadruplex DNA

YAN Shuangmei, MI Yaxuan, CUI Yue, ZHENG Zebao, ZHAO Xiaolong

2021, 41(1):  23-31.  DOI: 10.3969/j.issn.1000-1565.2021.01.004

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The interactions of a binuclear phenol-containing ruthenium(Ⅱ)complex with c-myc G-quadruplex DNA(c-myc Pu27 and c-myc Pu22)were investigated by UV-visible absorption spectra and fluorescence spectra titrations, Job plot, CD spectra, PCR(polymerase chain reaction)stop assay, color reaction, and FRET(fluorescence resonance energy transfer)experiments. The complex bind to c-myc Pu27 and c-myc Pu22 DNA strongly with the bonding constants of 6.21 × 10⁷ L/mol(c-myc Pu27)and 2.33×10⁶ L/mol(c-myc Pu22)via groove mode and the binding stoichiometry is 2∶1. The replication of c-myc DNA was completely blocked by the complex at concentrations of 4 μmol/L for c-myc Pu27 and 6 μmol/L for c-myc Pu22, indicating that the complex can induce c-myc DNA to form a G-quadruplex structure. In addition, the complex can increase the melting temperatures of F27T and F22T by 13 ℃(c-myc Pu27)and- DOI:10.3969/j.issn.1000-1565.2021.01.004双核钌配合物与c-myc G-四链体DNA的键合性能严双美¹,米雅萱¹,崔玥¹,郑泽宝²,赵晓珑¹ (1. 河北大学 化学与环境科学学院, 河北 保定 071002;2. 泰山学院 化学化工学院,山东 泰安 271021)摘 要:通过紫外可见吸收光谱和荧光光谱滴定、Job plot、圆二色光谱、聚合酶链式扩增反应(PCR)、显色反应以及FRET实验,研究了苯酚基双核钌配合物与c-myc G-四链体DNA(c-myc Pu27和c-myc Pu22)之间的相互作用. 结果表明,配合物对c-myc Pu27和c-myc Pu22 DNA都有较强结合,键合常数分别为6.21 × 10⁷ L/mol 和2.33×10⁶ L/mol,键和模式为沟槽结合,键合物质的量比为2∶1;配合物在浓度为4 μmol/L(c-myc Pu27)、6 μmol/L(c-myc Pu22)时,可完全抑制PCR扩增产物生成,表明其能够诱导c-myc DNA形成G-四链体结构. 此外,配合物可使F27T和F22T的熔解温度分别升高13 ℃和12 ℃,且在双链DNA存在时F27T和F22T的熔解温度几乎没有变化,表明其对c-myc G-四链体DNA具有显著的稳定性及选择性.关键词:钌配合物;四链体;DNA中图分类号:Q523 文献标志码:A 文章编号:1000-1565(2021)01-0023-09Binding properties of a dinuclear ruthenium complex to c-myc G-quadruplex DNAYAN Shuangmei¹, MI Yaxuan¹, CUI Yue¹, ZHENG Zebao², ZHAO Xiaolong¹(1. College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China; 2. College of Chemistry and Chemical Engineering, Taishan University, Taian 271021, China)Abstract: The interactions of a binuclear phenol-containing ruthenium(Ⅱ)complex with c-myc G-quadruplex DNA(c-myc Pu27 and c-myc Pu22)were investigated by UV-visible absorption spectra and fluorescence spectra titrations, Job plot, CD spectra, PCR(polymerase chain reaction)stop assay, color reaction, and FRET(fluorescence resonance energy transfer)experiments. The complex bind to c-myc Pu27 and c-myc Pu22 DNA strongly with the bonding constants of 6.21 × 10⁷ L/mol(c-myc Pu27)and 2.33×10⁶ L/mol(c-myc Pu22)via groove mode and the binding stoichiometry is 2∶1. The replication of c-myc DNA was completely blocked by the complex at concentrations of 4 μmol/L for c-myc Pu27 and 6 μmol/L for c-myc Pu22, indicating that the complex can induce c-myc DNA to form a G-quadruplex structure. In addition, the complex can increase the melting temperatures of F27T and F22T by 13 ℃(c-myc Pu27)and- 收稿日期:2020-04-20 基金项目:国家自然科学基金资助项目(21401038);河北省自然科学基金资助项目(B2016201122);保定市科学技术研究与发展计划项目(14ZF009);泰安市科学技术研究与发展计划项目(2015GX2048) 第一作者:严双美(1995—),女,河北秦皇岛人,河北大学在读硕士研究生.E-mail:2986558284@qq.com 通信作者:赵晓珑(1980—),女,河北邯郸人,河北大学副教授,博士,主要从事钌配合物与生物大分子相互作用研究.E-mail: longlong_666@sina.com郑泽宝(1980—),男,山东泰安人,泰山学院副教授,博士,主要从事钌配合物生物传感研究.E-mail: zhengzebao@163.com第1期严双美等:双核钌配合物与c-myc G-四链体DNA的键合性能12 ℃(c-myc Pu22), and the melting temperatures of F27T and F22T were almost unchanged in the presence of double-stranded DNA, suggesting that the complex has significant stability and selectivity for c-myc G-quadruplex DNA.

Synthesis, crystal structure and characterization of ［N(CH₃)₄］₄［Mo₁₀O₁₈(OH)₄(O₂)₁₀(O₂)₂］·6H₂O

LIU Xuemei, LI Huimin, DING Liqin, GUO Kexin, LI Jinhuan

2021, 41(1):  32-39.  DOI: 10.3969/j.issn.1000-1565.2021.01.005

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A new tetramethyl ammonium decamolybdate ［N(CH₃)₄］₄［Mo₁₀O₁₈(OH)₄(O₂)₁₀(O₂)₂］·6H₂O with peroxo and superoxo groups was synthesized by reacting of 30% hydrogen peroxide as the oxidant, ammonium molybdate and tetramethyl ammonium chloride in aqueous solution at room temperature. The compound was characterized by elemental analysis, IR, UV spectroscopy and Its structure was determined by single crystal Xray diffraction. The compound belongs to monoclinic system with space group P2₁/c, a=1.443(16)nm, b= 1.168(12)nm, c= 1.693(17)nm, β= 99.32(3)°, V=2.814(5)nm³, Z=2, D_c=2.441 g/cm³, R₁ = 0.035 6, wR₂ = 0.105 0(I>2, GOF=1.087. The compound anions exhibit a centrosymmetric structure containing two superoxo groups with a bond length of 0.114 5 nm and ten classical peroxo groups with a bond length range of 0.143 5~0.148 1 nm. The compound is unstable in water, but stable in solid state at room temperature, and can rapidly oxidize I^- into I₂ with the yield of iodine reaching 91.2%, indicating the compound has strong oxidizing properties due to peroxo and superoxo groups in the structure.

Application of partial degradation products of polysaccharide in analysis of polysaccharide from Banlangen Granules

ZHANG Jian, LU Kai, SHI Jing, GUO Huaizhong

2021, 41(1):  40-46.  DOI: 10.3969/j.issn.1000-1565.2021.01.006

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The pharmacological activities of Radix isatidis polysaccharide are consistent with the efficacy of R. isatidis. As the capillary zone electrophoresis(CZE)spectrum of partial degradation products of R. isatidis polysaccharide has obvious characteristics, and can be used for the qualitative analysis of polysaccharide from Banlangen Granules. In this paper, the interference of pharmaceutical excipients such as dextrin from Banlangen Granules was firstly removed by enzymatic method. Then the obtained R. isatidis polysaccharide was partially degraded for 4 h at a hydrochloric acid concentration of 0.5 mol/L and a temperature of 80 ℃, and the spectra were determined by CZE using 1-phenyl-3-methyl-5-pyrazolone(PMP)as- DOI:10.3969/j.issn.1000-1565.2021.01.006多糖部分降解产物在板蓝根颗粒多糖成分分析中的应用张建,卢凯,石晶,郭怀忠(河北大学 药学院,河北省药物质量分析控制重点实验室,河北 保定 071002)摘 要:板蓝根多糖的药理活性与板蓝根的功效一致,其部分降解产物的毛细管区带电泳(CZE)图谱特征性强,可用于板蓝根颗粒中多糖类成分的定性分析.首先采用酶法去除板蓝根颗粒中糊精等辅料的干扰,所得板蓝根多糖在盐酸浓度0.5 mol/L,温度80 ℃条件下部分降解4 h,以1-苯基-3-甲基-5-吡唑啉酮(PMP)为衍生试剂,采用毛细管区带电泳法测定其部分降解产物图谱.电泳条件:未涂层弹性石英毛细管柱(70 cm×50 μm, i.d,有效长度61 cm),运行缓冲液为40 mmol/L硼砂缓冲液(pH 10.1),检测波长245 nm,运行电压17 kV,室温下重力进样10 cm×15 s,进而运用聚类分析(CA)对该产物的CZE谱图进一步探讨.结果表明:CZE图谱在低聚糖部分具有差异,而单糖组成相对稳定,均含木糖、阿拉伯糖、葡萄糖、鼠李糖、甘露糖和半乳糖等,结合板蓝根药材相应谱图,从低聚糖和单糖上进行比对可达到鉴别目的,且发现不同厂家产品之间多糖含量存在较大差异.板蓝根颗粒中多糖部分降解产物CZE图谱的建立完善了该药品的质量控制,同时也为其药效物质研究及其他相关中药制剂中多糖的质量控制提供参考.关键词:板蓝根颗粒;多糖;部分降解;鉴别;毛细管区带电泳;聚类分析中图分类号:O657.8 文献标志码:A 文章编号:1000-1565(2021)01-0040-07Application of partial degradation products of polysaccharide in analysis of polysaccharide from Banlangen GranulesZHANG Jian, LU Kai, SHI Jing, GUO Huaizhong(Key Laboratory of Pharmaceutical Quality Control of Hebei Province,College of Pharmacy, Hebei University, Baoding 071002, China)Abstract: The pharmacological activities of Radix isatidis polysaccharide are consistent with the efficacy of R. isatidis. As the capillary zone electrophoresis(CZE)spectrum of partial degradation products of R. isatidis polysaccharide has obvious characteristics, and can be used for the qualitative analysis of polysaccharide from Banlangen Granules. In this paper, the interference of pharmaceutical excipients such as dextrin from Banlangen Granules was firstly removed by enzymatic method. Then the obtained R. isatidis polysaccharide was partially degraded for 4 h at a hydrochloric acid concentration of 0.5 mol/L and a temperature of 80 ℃, and the spectra were determined by CZE using 1-phenyl-3-methyl-5-pyrazolone(PMP)as- 收稿日期:2019-12-24 基金项目:国家自然科学基金资助项目(21575033);河北省自然科学基金资助项目(H2016201221;B2018201270) 第一作者:张建(1993—),男,河南信阳人,河北大学在读硕士研究生.E-mail:zjian201709@163.com 通信作者:郭怀忠(1968—),男,内蒙古商都人,河北大学教授,主要从事中药质量控制及其药效学研究.E-mail: ghuaizh@aliyun.com第1期张建等:多糖部分降解产物在板蓝根颗粒多糖成分分析中的应用a derivatizing reagent. The electrophoresis conditions were as follows: uncoated fused silica capillary column(70 cm×50 μm i.d., 61 cm effective length), 40 mmol/L borax solution(pH 10.1)was used as the running buffer, the detection wavelength was set at 245 nm, the operation voltage was 17 kV, hydrodynamic pressure injection was employed(10 cm×15 s). The CZE spectra of partial degradation products were further explored using cluster analysis(CA). The results showed that the CZE spectra had some differences in oligosaccharide composition, while monosaccharide composition was relatively stable, including xylose, arabinose, glucose, rhamnose, mannose and galactose. Combined with the corresponding spectrum of R. isatidis, we could achieve identification purpose through comparison between their oligosaccharides and monosaccharides, and there were significant differences in polysaccharide contents among the products of different manufacturers. The establishment of CZE spectrum of the partial degradation products of polysaccharide from Banlangen Granules has improved the quality control of the drug, and also provided reference for the study of the pharmacodynamic substances and the quality control of polysaccharide in other related Chinese medicine preparations.

Effect of GmGSL7c in SMV infected soybean

WANG Mengxuan, SUN Xizhe, SUN Tianjie, ZHANG Jie, WANG Dongmei

2021, 41(1):  47-54.  DOI: 10.3969/j.issn.1000-1565.2021.01.007

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This work centered on the key role of soybean callose synthase in the process of soybean mosaic virus infection. Twenty four callose synthase were identified in soybean by bioinformatics in this experiment. Glyma.08G308200(GmGSL7c)was selected for RT-qPCR to verify that the transcriptome data was consistent with the actual expression trend.TRV-VIGS followed by callose fluorescence observation found that silencing GmGSL7c affected the synthesis of callose in the leaves, and the SMV-CP gene could be detected in the upper leaves of the silenced plants that were not inoculated. In addition, disease symptoms of SMV were observed in the GmGSL7c silenced plants, indicating that the silencing of GmGSL7c promotes the transportation of SMV in soybeans. This study lays the foundation for further research on the soybean-SMV interaction signal pathway for disease resistance.

Tissue culture of Ligularia rumicifolia

LI Yi, LU Xu, GUO Meng, LU Jiao, WANG Junli

2021, 41(1):  55-59.  DOI: 10.3969/j.issn.1000-1565.2021.01.008

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For utilization of Ligularia rumicifolia(Drumm.)S. W. Liu, tissue culture in vitro was tested using cotyledon as explants. The results showed that the MS medium containing TDZ 1.0 mg/L and NAA 1.0 mg/L was suitable for callus induction. The maximum induction rate of adventitious shoots from callus was 69.56% when NAA(0.5 mg/L)and 6-BA(2.0 mg/L)were added in the MS medium. The MS medium containing 6-BA 3.0 mg/L and NAA 0.8 mg/L gave the better response to adventitious shoots induction from cotyledon explants, and the induction rate reached up to 72.33%. About 70.00 % of the adventitious shoots rooted on 1/2 MS containing 0.5 mg/L IAA.

Molecular identification of Platycodon grandiflorum and its common miscible using DNA barcording

ZHAO Xinyue, LIU Rui, FENG Hong, MAO Wenwen, CAO Fei, ZHANG Lanlan

2021, 41(1):  60-67.  DOI: 10.3969/j.issn.1000-1565.2021.01.009

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To specifically identify Platycodon grandiflorum and its miscible products, a method was established by optimizing DNA extraction method,designing specific primers based on the ITS(internal transcribed spacer)sequence, and carrying out specific PCR amplification. The authenticity of P.grandiflorum was quickly determined by the amplification success rate. The results showed that the modified CTAB(cetyltrimethylammonium bromide)method gave relatively pure DNA and amplification was 100% successful, specific primers U1/D1 and specific PCR were designed based on the specific sites of P. grandiflorum 293 and 538. In the identification, only P.grandiflorum can be amplified to obtain a 264 bp specific band, and other medicinal materials were negative. The ITS sequence and the designed specific primers can be applied to identification of the P.grandiflorum and its common miscible products, which should provide scientific evidence for origin identification of P. grandiflorum.

New discovery of the male of Cyrtomorphus duodecimmaculatus Araki(Coleoptera:Erotylidae)

LIU Jing,JIN Yimei, LI Jing

2021, 41(1):  68-71.  DOI: 10.3969/j.issn.1000-1565.2021.01.010

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The male of Cyrtomorphus duodecimmaculatus Araki, 1941(Coleoptera: Erotylidae)is described here based on specimens collected from Jianfeng Ridge, Hainan Province, China. Detailed diagnosis, description and illustrations are presented. All specimens are deposited in Museum of Hebei University.

Preparation and application of biochar derived from urban green space waste

SUN Xuekai, BAI Jie, XU Chengbin, LIN Guigang, AI Guiyan

2021, 41(1):  72-76.  DOI: 10.3969/j.issn.1000-1565.2021.01.011

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The preparation, characterization, load materials of biochars and its applications were reviewed. Application prospect of biochar derived from urban green space plant wastes were discussed. The problems with the perspective about biochar are pointed out, which is beneficial for the efficient utilization of biochar resources.

A survey on user behavior of social network based on knowledge graph

YANG Xiaohui, SUN Ying

2021, 41(1):  77-86.  DOI: 10.3969/j.issn.1000-1565.2021.01.012

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Social networks contain complex structural information and rich semantic information. The research of multi-type data of interconnection and the behavioral relationship security of entity objects are facing great challenges. Knowledge graph is designed to process user data knowledge and behavior information, and to find the complex relationship between things, concepts and entity objects, so that the relationship between things can be clearly explained. Firstly, basic knowledge of knowledge graph was introduced. Secondly, based on knowledge graph, the behavioral relationship of users is visualized in the social network, and the key technologies and research progress of the three modules of behavioral knowledge extraction, behavioral knowledge expression, and behavioral knowledge processing are summarized. By experimental analysis and comparison of the technical models, the visual identification technology was introduced. By using probability soft logic to identify candidate behavioral knowledge, the accuracy of user behavior relationship visualization was improved. Finally, the application of user behavior relation visualization in user information retrieval, user security evaluation and behavior correlation analysis is introduced, the challenges of current research are discussed and analyzed, and its development is prospected.

Restoration of lung boundary defects in CT images based on 3D surface reconstruction

ZHANG Xin, XU Yongxiao, WANG Bing

2021, 41(1):  87-92.  DOI: 10.3969/j.issn.1000-1565.2021.01.013

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To solve the problem of restoring the lung boundary defects caused by the lung boundary adhesion tumor in CT image segmentation of the lung parenchyma, a method based on three-dimensional surface reconstruction is proposed. For defects with large curvature of the lung parenchymal boundary, the two-dimensional image cannot obtain enough features to restore the lung parenchymal boundary. In this paper, firstly, the centroid-gray algorithm is used to improve the three-dimensional region growth algorithm, and the lung parenchyma is extracted for three-dimensional reconstruction. Then the threshold method is used to extract the three-dimensional point cloud distributed around the defects, a complete outline of the lung parenchyma can be obtained by the surfase reconstruction of the three-dimensional point cloud. The experimental results show that compared with the traditional convex hull algorithm and the rolling ball method, this method is more complete and effective to restore the defects of lung parenchymal boundary with adhesion tumors.

Development and implementation of a human-machine collaboration control system based on contact force identification

XIAO Jinzhuang, ZHAO Shuai, WANG Wei, WANG Hongrui

2021, 41(1):  93-98.  DOI: 10.3969/j.issn.1000-1565.2021.01.014

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In order to realize human-robot collaboration in transferring task, a prototype of transferring robot is designed, where the operators intention is recognized through contact force. A single-degree-of-freedom motion manipulator is designed, which is composed of a rigid rod and a servo motor in a direct connection mode. In the torque mode, the closed-loop position controller is studied. In order to obtain the operation intention information, FSR films are set on both sides of the rigid rod end. The pressure sensor is used to detect the short-term contact force between the operator and the robotic arm, corresponding to the three common operating conditions, the corresponding time domain algorithms are given to extract the contact feature information, and the corresponding mapping rules are designed to identify the operators intention and generate instructions as the desired motion. And through the position control loop, the manipulator reaches the operators intended target position. Using the hardware-in-loop simulation system of the single-degree-of-freedom planar manipulator constructed in this study, a control task consisting of 4 fixed-point target positions and two forward and reverse motion directions is designed. The proposed human-machine cooperation control algorithm is verified. The results show that for the four fixed-point forward and reverse motion control tasks, the manipulator arm reaches the correct positions quickly according to the operators intention, indicating the design of the contact force-based handling robot system feasibility.- DOI:10.3969/j.issn.1000-1565.2021.01.014基于接触力识别的人机协作控制系统设计与实现肖金壮¹,赵帅¹,王伟²,王洪瑞¹( 1.河北大学 电子信息工程学院,河北 保定 071002;2.保定市一禾电气有限公司,河北 保定 071000 )摘 要:为实现人机协作搬运,设计了一种基于接触力操作意图识别的搬运机器人原型机.以直联方式设计由刚性杆和伺服电机构成的单自由度运动机械臂,研究位置控制器,实现扭矩工作模式下的闭环控制.为获取操作意图信息,在刚性杆末端两侧分别设置FSR薄膜压力传感器,用于检测操作者与机械臂的短暂接触力.对应3种常见操作情况给出相应时域算法提取接触特征信息,通过设计相应映射规则,识别操作者意图,生成指令作为期望运动,并通过位置控制环,机械臂到达操作者意图目标位置.采用本研究构建的单自由度平面机械臂半实物仿真系统,设计了由4个定点目标位置和正、反2个运动方向组成的控制任务,对提出的人机协作控制算法进行验证.结果表明,对4定点正向和反向运动控制任务,机械臂均按操作者意图,快速到达正确位置, 说明所设计基于接触力的搬运机器人系统具有可行性.关键词:人机协作;接触力检测;意图识别;机器人;货物搬运中图分类号:TP241 文献标志码:A 文章编号:1000-1565(2021)01-0093-06Development and implementation of a human-machine collaboration control system based on contact force identificationXIAO Jinzhuang¹, ZHAO Shuai¹, WANG Wei², WANG Hongrui¹(1. College of Electronic and Information Engineering, Hebei University, Baoding 071002, China; 2. Baoding Yihe Electrical Co., Ltd., Baoding 071000, China)Abstract: In order to realize human-robot collaboration in transferring task, a prototype of transferring robot is designed, where the operators intention is recognized through contact force. A single-degree-of-freedom motion manipulator is designed, which is composed of a rigid rod and a servo motor in a direct connection mode. In the torque mode, the closed-loop position controller is studied. In order to obtain the operation intention information, FSR films are set on both sides of the rigid rod end. The pressure sensor is used to detect the short-term contact force between the operator and the robotic arm, corresponding to the three common operating conditions, the corresponding time domain algorithms are given to extract the contact feature information, and the corresponding mapping rules are designed to identify the operators intention and generate instructions as the desired motion. And through the position control loop, the manipulator reaches the operators intended target position. Using the hardware-in-loop simulation system of the single-degree-of-freedom planar manipulator constructed in this study, a control task consisting of 4 fixed-point target positions and two forward and reverse motion directions is designed. The proposed human-machine cooperation control algorithm is verified. The results show that for the four fixed-point forward and reverse motion control tasks, the manipulator arm reaches the correct positions quickly according to the operators intention, indicating the design of the contact force-based handling robot system feasibility.- 收稿日期:2019-01-02 基金项目:河北省自然科学基金资助项目(H2016201201);河北大学研究生创新项目(X201713) 第一作者:肖金壮(1976—),男,河北定州人,河北大学副教授,博士, 主要从事机器人控制方向研究.E-mail:robot@hbu.edu.cn第1期肖金壮等:基于接触力识别的人机协作控制系统设计与实现

Design and implementation of bilateral multi-channel fast frequency hopping carrier generator

CHEN Lei, WANG Tao, WEI Jing, TIAN Xiaoyan, ZHANG Suoliang

2021, 41(1):  99-105.  DOI: 10.3969/j.issn.1000-1565.2021.01.015

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The quality of the frequency hopping carrier in the hybrid hopping spread-spectrum system is determined by hopping speed and bandwidth, which has a direct impact on the performance of the system. For the hybrid hopping spread-spectrum system with a hopping speed of tens of thousands of hops per second and a hopping bandwidth of hundreds of megabytes, the traditional unidirectional frequency-hopping design will occupy a large number of hardware resources and affect the design of other parts of the system. To solve this problem, this paper proposes a bidirectional multi-channel structure of fast frequency hopping carrier generation method, through parallel multi-channel DDS to generate high hops and large bandwidth fast frequency hopping carrier. Using the idea of bidirectional frequency hopping, the consumption of hardware resources is reduced under the condition of constant frequency hopping bandwidth. The experimental results show that based on the FPGA platform, the method successfully generates a fast frequency hopping carrier with a hopping speed of 20 000 hops/s, a frequency hopping bandwidth- DOI:10.3969/j.issn.1000-1565.2021.01.015双向多路快跳频载波发生器的设计与实现 陈雷^1,2,王涛¹,韦靖¹,田晓燕¹,张锁良¹ (1.河北大学 电子信息工程学院,河北 保定 071002; 2.北京邮电大学 电子工程学院,北京 100876)摘 要:混合跳扩频系统中跳频载波的质量主要由跳速、带宽决定,对系统的性能有着直接影响.对于跳速每秒钟几万跳、跳频带宽几百兆的混合跳扩频系统,利用传统单向跳频的方法进行设计时,会占用大量的硬件资源,影响系统其他部分设计.针对此问题,本文提出一种双向多路快跳频载波产生方法,通过多路并行直接频率合成器技术(direct digital synthesizer,DDS)产生高跳速、大带宽的快跳频载波,利用双向跳频的思路,在跳频带宽不变的条件下,降低了硬件资源的消耗.实验结果表明,利用该方法,基于现场可编程门阵列(FPGA,field programmable gate array)平台,实现了跳速20 000 hops/s、跳频带宽327.52 MHz的快跳频载波.相比于单向跳频技术,节约了系统53%的Block RAM资源.关键词:混合跳扩频;双向多路;DDS;快跳频载波;FPGA中图分类号:TN927.2 文献标志码:A 文章编号:1000-1565(2021)01-0099-07 Design and implementation of bilateral multi-channel fast frequency hopping carrier generatorCHEN Lei^1,2, WANG Tao¹, WEI Jing¹, TIAN Xiaoyan¹, ZHANG Suoliang¹(1.College of Electronic Information Engineering,Hebei University,Baoding 071002,China; 2. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)Abstract: The quality of the frequency hopping carrier in the hybrid hopping spread-spectrum system is determined by hopping speed and bandwidth, which has a direct impact on the performance of the system. For the hybrid hopping spread-spectrum system with a hopping speed of tens of thousands of hops per second and a hopping bandwidth of hundreds of megabytes, the traditional unidirectional frequency-hopping design will occupy a large number of hardware resources and affect the design of other parts of the system. To solve this problem, this paper proposes a bidirectional multi-channel structure of fast frequency hopping carrier generation method, through parallel multi-channel DDS to generate high hops and large bandwidth fast frequency hopping carrier. Using the idea of bidirectional frequency hopping, the consumption of hardware resources is reduced under the condition of constant frequency hopping bandwidth. The experimental results show that based on the FPGA platform, the method successfully generates a fast frequency hopping carrier with a hopping speed of 20 000 hops/s, a frequency hopping bandwidth- 收稿日期:2020-08-27 基金项目:国家自然科学基金重点项目(61531007) 第一作者:陈雷(1978—),男,河北保定人,河北大学讲师,北京邮电大学在读博士,主要从事无线通信物理层关键技术研究. E-mail:clei1978@126.com 通信作者:张锁良(1966—),男,河北藁城人,河北大学教授,主要从事高速数据通信研究.E-mail:zhangsl@hbu.cn第1期陈雷等:双向多路快跳频载波发生器的设计与实现of 327.52MHz. Compared with the unidirectional frequency hopping technology, the Block RAM resources are saved by 53%.

Optimal operation of wind-light-pumped storage combined power generation system

YANG Sen,ZHANG Qing,Gao Liai

2021, 41(1):  106-112.  DOI: 10.3969/j.issn.1000-1565.2021.01.016

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Considering the wind - light - joint pumped storage power generation system low output due to the fact that each part is of low output, and to improve particle swarm gravitation hybrid algorithm, inertia weight and chaos algorithm were introduced into the traditional particle swarm algorithm of gravity. The capability and precision of the traditional algorithm optimization were Improved. precision is not high.The improved particle swarm gravitation algorithm is applied to a practical engineering example to optimize the output of each part of the co-generation system and obtain the maximum economic benefit.The results show that the improved algorithm has the best accuracy and the shortest iteration times. After the optimization of the output of each part of the joint generation system, the largest economic benefits were achieved.