Pub Date : 1900-01-01DOI: 10.5220/0008874404670473
Ruoyu Liu, Ming Li, C. Jiang, Lu Liu
Aiming at the multi-attribute decision problem of networked ammunition, the research of intelligent decision method is carried out. Based on the tasks of blocking the key areas in wild, the main factors affecting the decision are analysed. According to the inherent logical relationship of each factor, a decision model based on Dynamic Bayesian Network (DBN) is proposed. In addition, in order to better verify the practical performance of the reasoning method, a simulation system including software and hardware is designed. The wireless intelligent node includes self-positioning module, communication module, detection module, signal processing module, feedback module, core processing module and power module. Software, used Visual Studio 2015 as the development platform, it is based on C# language and includes modules such as interactive display, communication and algorithm. Through the system test and semi-physical simulation experiments, the practicability and effectiveness of the reasoning method are verified, which proves that it can provide support for research and practical use.
针对网络化弹药的多属性决策问题，开展了智能决策方法的研究。根据野外关键区域的封锁任务，分析了影响决策的主要因素。根据各因素之间的内在逻辑关系，提出了一种基于动态贝叶斯网络的决策模型。此外，为了更好地验证推理方法的实用性能，设计了包括软件和硬件在内的仿真系统。无线智能节点包括自定位模块、通信模块、检测模块、信号处理模块、反馈模块、核心处理模块和电源模块。软件部分，采用Visual Studio 2015作为开发平台，基于c#语言，包括交互显示、通信、算法等模块。通过系统测试和半物理仿真实验，验证了推理方法的实用性和有效性，为研究和实际应用提供了支持。
{"title":"Design and Research of Bayesian Reasoning Method based on Wireless Intelligent Nodes","authors":"Ruoyu Liu, Ming Li, C. Jiang, Lu Liu","doi":"10.5220/0008874404670473","DOIUrl":"https://doi.org/10.5220/0008874404670473","url":null,"abstract":"Aiming at the multi-attribute decision problem of networked ammunition, the research of intelligent decision method is carried out. Based on the tasks of blocking the key areas in wild, the main factors affecting the decision are analysed. According to the inherent logical relationship of each factor, a decision model based on Dynamic Bayesian Network (DBN) is proposed. In addition, in order to better verify the practical performance of the reasoning method, a simulation system including software and hardware is designed. The wireless intelligent node includes self-positioning module, communication module, detection module, signal processing module, feedback module, core processing module and power module. Software, used Visual Studio 2015 as the development platform, it is based on C# language and includes modules such as interactive display, communication and algorithm. Through the system test and semi-physical simulation experiments, the practicability and effectiveness of the reasoning method are verified, which proves that it can provide support for research and practical use.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123462405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008850503470353
Lei Li, Chengliang Zhang, Xinyu Zheng
: A segmentation method based on regional color information is proposed for the complicated natural impurities in machine-harvested cotton. The color gradient operation of the filtered machine cotton picking image is carried out, and the marked image is obtained by extended minimum transformation operation. The initial segmented image is obtained by using the watershed algorithm on the modified gradient image. Spatial proximity and color information are considered comprehensively in the process of region merging. Saturation S and brightness I as color information feature are mainly used in the paper. In order to make the algorithm more accurately, the information features are updated in the process of merging. The experimental results show that the average segmentation accuracy of the method for natural impurities is 92%.
{"title":"Segmentation Algorithm for Machine-Harvested Cotton based on S and I Regional Features","authors":"Lei Li, Chengliang Zhang, Xinyu Zheng","doi":"10.5220/0008850503470353","DOIUrl":"https://doi.org/10.5220/0008850503470353","url":null,"abstract":": A segmentation method based on regional color information is proposed for the complicated natural impurities in machine-harvested cotton. The color gradient operation of the filtered machine cotton picking image is carried out, and the marked image is obtained by extended minimum transformation operation. The initial segmented image is obtained by using the watershed algorithm on the modified gradient image. Spatial proximity and color information are considered comprehensively in the process of region merging. Saturation S and brightness I as color information feature are mainly used in the paper. In order to make the algorithm more accurately, the information features are updated in the process of merging. The experimental results show that the average segmentation accuracy of the method for natural impurities is 92%.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128210151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008856003820389
Wu Deguan, Chenhao Zhao, Z. Tang, Liao Hongyuan, Hui Xia, Pang Kai
Partial discharge (PD) ultra-high frequency (UHF) on-line monitoring technique is an important resort to evaluate the insulation condition of the high-voltage power equipment. The presence of a large number of on-site interference affects the detection sensitivity and reliability, and the interference generated by discharges are the crucial bottleneck for effective PD detection under complicated electromagnetic environment, because they have similar time-frequency characteristics as real PD. Therefore, in order to solve the problem of mutual existence of multiple discharge and their interference to each other, a method of auto separation of multiple PD is studied in this paper, and the rules and a combined strategy is presented to make accurate multi-PD separation. The technique of dynamic automated separation of multi-PD is developed based on digital RF chip by using these rules, then theoretical and experimental verification is carried out. The results indicate that the clustering technology presented in this paper could realize automated separation of multiple PD and its accuracy can up to 90 %.
{"title":"Dynamic Frequency-selection Clustering of Automatic Multiple Source Separation based on UHF PD Detection","authors":"Wu Deguan, Chenhao Zhao, Z. Tang, Liao Hongyuan, Hui Xia, Pang Kai","doi":"10.5220/0008856003820389","DOIUrl":"https://doi.org/10.5220/0008856003820389","url":null,"abstract":"Partial discharge (PD) ultra-high frequency (UHF) on-line monitoring technique is an important resort to evaluate the insulation condition of the high-voltage power equipment. The presence of a large number of on-site interference affects the detection sensitivity and reliability, and the interference generated by discharges are the crucial bottleneck for effective PD detection under complicated electromagnetic environment, because they have similar time-frequency characteristics as real PD. Therefore, in order to solve the problem of mutual existence of multiple discharge and their interference to each other, a method of auto separation of multiple PD is studied in this paper, and the rules and a combined strategy is presented to make accurate multi-PD separation. The technique of dynamic automated separation of multi-PD is developed based on digital RF chip by using these rules, then theoretical and experimental verification is carried out. The results indicate that the clustering technology presented in this paper could realize automated separation of multiple PD and its accuracy can up to 90 %.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134122016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008849001720174
Yueyong Wang, Yimin Zhang, Zunling Du, Shijie Wang
The advantages and disadvantages of the traditional lubrication and cooling mechanism of Air-leg Rock drill are analyzed. In order to solve the shortcomings of the traditional structure and the fatal disadvantages of gas-water linkage failure and hammer washing, a new lubrication and cooling mechanism of Air-leg Rock drill is designed. It prevents the backfilling of pneumatic rock drill in the normal working process and at the end, improves the life of pneumatic rock drill as a whole, and has been verified in the customer site, and achieved good results.
{"title":"Design of Lubrication and Cooling Flushing Mechanism for Hand-held Pneumatic Rock Drill","authors":"Yueyong Wang, Yimin Zhang, Zunling Du, Shijie Wang","doi":"10.5220/0008849001720174","DOIUrl":"https://doi.org/10.5220/0008849001720174","url":null,"abstract":"The advantages and disadvantages of the traditional lubrication and cooling mechanism of Air-leg Rock drill are analyzed. In order to solve the shortcomings of the traditional structure and the fatal disadvantages of gas-water linkage failure and hammer washing, a new lubrication and cooling mechanism of Air-leg Rock drill is designed. It prevents the backfilling of pneumatic rock drill in the normal working process and at the end, improves the life of pneumatic rock drill as a whole, and has been verified in the customer site, and achieved good results.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121146620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008856302030209
Sun Jinyue, Meng Qiaoling, Lan He, Jiao Zongqi, Hongliu Yu
: The intelligent knee prosthesis structure was designed and the dynamics model of the lower limb prosthesis system and hydraulic damper model were established in this paper. The flow area which adjusted the damping torque was identified through the combination of hydraulic damper model and dynamics model. The comparable analysis was done based on the Matlab simulation of damping torque curve with theoretical curve. The damper opening of the specific speed was determined. The trend of the knee joint moment curve produced by the hydraulic damper is consistent with the theoretical moment curve under different flow areas. The damping moment of hydraulic knee joint can be controlled by adjusting the flow area. The proposed damping torque model can provide effective guidance for the determination of the flow area and have important consequences for adjustment of damping torque. Providing theoretical model of the damping torque control for the hydraulic intelligent knee prosthesis.
{"title":"Establishment and Simulation of the Damping Torque Model of Hydraulic Intelligent Knee Prosthesis","authors":"Sun Jinyue, Meng Qiaoling, Lan He, Jiao Zongqi, Hongliu Yu","doi":"10.5220/0008856302030209","DOIUrl":"https://doi.org/10.5220/0008856302030209","url":null,"abstract":": The intelligent knee prosthesis structure was designed and the dynamics model of the lower limb prosthesis system and hydraulic damper model were established in this paper. The flow area which adjusted the damping torque was identified through the combination of hydraulic damper model and dynamics model. The comparable analysis was done based on the Matlab simulation of damping torque curve with theoretical curve. The damper opening of the specific speed was determined. The trend of the knee joint moment curve produced by the hydraulic damper is consistent with the theoretical moment curve under different flow areas. The damping moment of hydraulic knee joint can be controlled by adjusting the flow area. The proposed damping torque model can provide effective guidance for the determination of the flow area and have important consequences for adjustment of damping torque. Providing theoretical model of the damping torque control for the hydraulic intelligent knee prosthesis.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127540282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008849403410346
Zhiping Kong, Wei Zhang, Haibo Zhou
: A kinematic design of the 3-PRS compliant parallel platform with wide-range flexure hinges is presented in this paper. The manipulator is driven by the piezoelectric motors, which can show the superiority of parallel platforms and large-stroke flexure hinges. First, taken into account the parasitic motions of the platform, the kinematics solution is proposed. Then, the influence of parameters to the rotation capacity and relative rotation error that are used to assess the quality of the revolute and spherical flexure joints. Also, the reachable travel is observed by ANSYS Workbench. Finally, compare with the FEM and the theoretical results by several different cases to ensure the efficiency of the kinematics model.
{"title":"A Kinematic Design of 3-PRS Precision Compliant Parallel Platform","authors":"Zhiping Kong, Wei Zhang, Haibo Zhou","doi":"10.5220/0008849403410346","DOIUrl":"https://doi.org/10.5220/0008849403410346","url":null,"abstract":": A kinematic design of the 3-PRS compliant parallel platform with wide-range flexure hinges is presented in this paper. The manipulator is driven by the piezoelectric motors, which can show the superiority of parallel platforms and large-stroke flexure hinges. First, taken into account the parasitic motions of the platform, the kinematics solution is proposed. Then, the influence of parameters to the rotation capacity and relative rotation error that are used to assess the quality of the revolute and spherical flexure joints. Also, the reachable travel is observed by ANSYS Workbench. Finally, compare with the FEM and the theoretical results by several different cases to ensure the efficiency of the kinematics model.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116717140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008849101750186
Miao Jin, A. Wang, Longkai Wang, Qike Huang
: The nonlinear coupled dynamic model of a rotor-bearing system with interaction between the rub-impact and oil-film forces is established by the Lagrangian’s equation and D'Alembert principle. The nonlinear coupled dynamic equation of rotor-bearing system with rub-impact and oil film force is investigated by the 4th-order Runge-Kutta method. Base on the dynamic model of rotor-bearing system, through Time domain response, shaft trajectory, phase plane and amplitude spectrum are proposed to illustrate the nonlinear coupled dynamic behaviors. then the largest Lyapunov exponent, Poincare map are identified to the stability of the obtained computational data. The excitation frequency, stator stiffness and mass eccentricity as the control parameters to study the influence of rotor-bearing system dynamics. Various nonlinear dynamic characteristics are discovered in the rotor-bearing system, such as periodic-1, multi-periodic, quasi-periodic and chaos motion are observed through the numerical simulation in this study. The numerical results indicated that coupled effects of rub-impact and nonlinear oil film force have a great influence on the vibration and instability of the rotor-bearing system as the varied excitation frequency. The nonlinear oil film force causes the oil whirl in the rotor-bearing system at the low excitation frequency. The rub-impact force mainly affects the dynamic characteristics of the high excitation frequency. The instability of rotor-bearing system occurs in the critical speed due to the instability of oil film. Larger stator stiffness can simplify the nonlinear dynamic response of system. As the stiffness of the stator increases, the system response gradually transforms from chaotic motion to period-1 motion. Under the effect of a large imbalance, jump phenomenon of system will be more obvious. and instability of system will occur in advance. The corresponding results obtained in this paper may promote to the further understanding of nonlinear dynamic behaviors of a rotor-bearing system and provide useful reference for suppressing the fault of rotating machinery.
{"title":"Nonlinear Coupled Dynamic Characteristics and the Stability of Rotor-Bearing System under Rub-Impact and Oil-Film Forces","authors":"Miao Jin, A. Wang, Longkai Wang, Qike Huang","doi":"10.5220/0008849101750186","DOIUrl":"https://doi.org/10.5220/0008849101750186","url":null,"abstract":": The nonlinear coupled dynamic model of a rotor-bearing system with interaction between the rub-impact and oil-film forces is established by the Lagrangian’s equation and D'Alembert principle. The nonlinear coupled dynamic equation of rotor-bearing system with rub-impact and oil film force is investigated by the 4th-order Runge-Kutta method. Base on the dynamic model of rotor-bearing system, through Time domain response, shaft trajectory, phase plane and amplitude spectrum are proposed to illustrate the nonlinear coupled dynamic behaviors. then the largest Lyapunov exponent, Poincare map are identified to the stability of the obtained computational data. The excitation frequency, stator stiffness and mass eccentricity as the control parameters to study the influence of rotor-bearing system dynamics. Various nonlinear dynamic characteristics are discovered in the rotor-bearing system, such as periodic-1, multi-periodic, quasi-periodic and chaos motion are observed through the numerical simulation in this study. The numerical results indicated that coupled effects of rub-impact and nonlinear oil film force have a great influence on the vibration and instability of the rotor-bearing system as the varied excitation frequency. The nonlinear oil film force causes the oil whirl in the rotor-bearing system at the low excitation frequency. The rub-impact force mainly affects the dynamic characteristics of the high excitation frequency. The instability of rotor-bearing system occurs in the critical speed due to the instability of oil film. Larger stator stiffness can simplify the nonlinear dynamic response of system. As the stiffness of the stator increases, the system response gradually transforms from chaotic motion to period-1 motion. Under the effect of a large imbalance, jump phenomenon of system will be more obvious. and instability of system will occur in advance. The corresponding results obtained in this paper may promote to the further understanding of nonlinear dynamic behaviors of a rotor-bearing system and provide useful reference for suppressing the fault of rotating machinery.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129079359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008480601440154
Liu Jixin, Yan Tianhong, He Bo, Shen Hongbin, Song Jinliang
: At present, the propeller-dependent drive system is still the mainstream propulsion mode of underwater vehicle. The propeller plays an important role in the whole propulsion system, and its effect directly affects the thrust, speed, efficiency and endurance of the underwater vehicle. The propeller used by autonomous underwater vehicle (AUV) should not only satisfy the demands of thrust and torque, but also high efficiency. In this paper, four kinds of airfoil propellers with different sizes and shapes are designed based on OpenProp software, and their performances are tested by thrust test. The comparison between the four kinds of airfoil propeller and the contrast between the airfoil propeller and the MAU type four-bladed propeller are made. In addition, a series of conclusions are drawn, which lays the foundation for designing the propeller with high efficiency and thrust.
{"title":"Parametric Modeling and Hydrodynamic Analysis of Underwater High Performance Propeller","authors":"Liu Jixin, Yan Tianhong, He Bo, Shen Hongbin, Song Jinliang","doi":"10.5220/0008480601440154","DOIUrl":"https://doi.org/10.5220/0008480601440154","url":null,"abstract":": At present, the propeller-dependent drive system is still the mainstream propulsion mode of underwater vehicle. The propeller plays an important role in the whole propulsion system, and its effect directly affects the thrust, speed, efficiency and endurance of the underwater vehicle. The propeller used by autonomous underwater vehicle (AUV) should not only satisfy the demands of thrust and torque, but also high efficiency. In this paper, four kinds of airfoil propellers with different sizes and shapes are designed based on OpenProp software, and their performances are tested by thrust test. The comparison between the four kinds of airfoil propeller and the contrast between the airfoil propeller and the MAU type four-bladed propeller are made. In addition, a series of conclusions are drawn, which lays the foundation for designing the propeller with high efficiency and thrust.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129906147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008865102170221
Y. Lei
With the development of society and economy, the transportation demand of the railway market is constantly improving, as an important part of railway transportation; high-speed train can meet the transportation needs of long distance, large volume and high density. Compared with the automotive and aerospace industries, the development of lightweight materials of high-speed train is relatively rare, but its role cannot be ignored, the lightweight design of high-speed train is an integral part of the research on highspeed train technology at present, it is an important condition for realizing fast, efficient, safe and convenient transportation of high-speed train. With the continuous development of high-speed train technology, high-speed motor train requires more lightweight materials. This paper has carried out some research on the new materials used in high-speed train, in order to provide a certain references for the lightweight design of high-speed train.
{"title":"Lightweight Design of High-speed Train under the Development of New Materials","authors":"Y. Lei","doi":"10.5220/0008865102170221","DOIUrl":"https://doi.org/10.5220/0008865102170221","url":null,"abstract":"With the development of society and economy, the transportation demand of the railway market is constantly improving, as an important part of railway transportation; high-speed train can meet the transportation needs of long distance, large volume and high density. Compared with the automotive and aerospace industries, the development of lightweight materials of high-speed train is relatively rare, but its role cannot be ignored, the lightweight design of high-speed train is an integral part of the research on highspeed train technology at present, it is an important condition for realizing fast, efficient, safe and convenient transportation of high-speed train. With the continuous development of high-speed train technology, high-speed motor train requires more lightweight materials. This paper has carried out some research on the new materials used in high-speed train, in order to provide a certain references for the lightweight design of high-speed train.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128239175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0008851103600366
Guangliang Pan, Jun Li, Fei Lin, Ting Sun, Sun Yulin
: With the rise of artificial intelligence, it has unlimited possibilities for machines to replace human work. Aiming at how to improve the learning performance of convolutional neural network (CNN) image classification by changing the activation function, a combined Tanh-relu activation function is proposed based on the single Sigmoid, Tanh and Relu activation functions. Based on CNN-LeNet-5, the size of the convolution kernel and sampling window is changed and the number of layers of the convolutional neural network is reduced. At the same time, the network structure of the LeNet-5 model is improved. On the Mnist handwritten digital dataset, the combined Tanh-relu activation function was compared with a single activation function. The experimental results show that the CNN model with combined Tanh-relu activation function has faster accuracy fitting speed and higher accuracy, improves the convergence speed of loss and enhances the convergence performance of CNN model.
{"title":"A Combined Activation Function for Learning Performance Improvement of CNN Image Classification","authors":"Guangliang Pan, Jun Li, Fei Lin, Ting Sun, Sun Yulin","doi":"10.5220/0008851103600366","DOIUrl":"https://doi.org/10.5220/0008851103600366","url":null,"abstract":": With the rise of artificial intelligence, it has unlimited possibilities for machines to replace human work. Aiming at how to improve the learning performance of convolutional neural network (CNN) image classification by changing the activation function, a combined Tanh-relu activation function is proposed based on the single Sigmoid, Tanh and Relu activation functions. Based on CNN-LeNet-5, the size of the convolution kernel and sampling window is changed and the number of layers of the convolutional neural network is reduced. At the same time, the network structure of the LeNet-5 model is improved. On the Mnist handwritten digital dataset, the combined Tanh-relu activation function was compared with a single activation function. The experimental results show that the CNN model with combined Tanh-relu activation function has faster accuracy fitting speed and higher accuracy, improves the convergence speed of loss and enhances the convergence performance of CNN model.","PeriodicalId":186406,"journal":{"name":"Proceedings of 5th International Conference on Vehicle, Mechanical and Electrical Engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126853546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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