For the interference problem between 3D dimension and solid model caused by model rotation, a self-adaptive algorithm was proposed in this paper. Firstly, three types of dimension interference in 3D model were analyze...
详细信息
ISBN:
(纸本)9783037851333
For the interference problem between 3D dimension and solid model caused by model rotation, a self-adaptive algorithm was proposed in this paper. Firstly, three types of dimension interference in 3D model were analyzed. Secondly, the work flow of self-adaptive algorithm was investigated and the key technologies such as interference check, normal adjustment were described in detail. By adjusting the normal of each interfered 3D dimension to non-interference state, the interference problem in this paper can be solved. All the algorithms were realized in a dynamically module based on CAXASOLID. Case study showed that the strategies present are feasible. Finally, the trends and expectation of 3D dimension layout was summarized.
A radial basis function (RBF) neural network control algorithm can effectively improve the robotic manipulators' performance against a large amount of uncertainty. The adaptive law can be derived by using the Lyap...
详细信息
A radial basis function (RBF) neural network control algorithm can effectively improve the robotic manipulators' performance against a large amount of uncertainty. The adaptive law can be derived by using the Lyapunov method so that the stability of robotic manipulator control system and the weight self-adaptive convergence of RBF neural networks will be guaranteed. Meanwhile, system fluctuations and even overshot phenomenon under every start-up process, which are caused by the system's convergence from the given nonoptimal initial weight value to the optimal weight value, can be avoided by using memristors to remember the optimal weight after the system's first operation. According to the above analysis, this correspondence paper designs a kind of RBF neural network control algorithm based on spintronic memristors, and then analyzes its theoretical derivation process and core design idea. Finally, the system simulation model, which uses a two-link robotic manipulator as control object, is built to prove the algorithm's validity and feasibility. Simulation results show that the proposed algorithm can satisfy the effect of presupposition.
This paper proposes an efficient method to modify gradient and intensity histograms(GIH) for contrast enhancement, which plays an important role in remote sensing image processing and information extraction. First, a ...
详细信息
ISBN:
(纸本)9781510845008
This paper proposes an efficient method to modify gradient and intensity histograms(GIH) for contrast enhancement, which plays an important role in remote sensing image processing and information extraction. First, a self-adaptive algorithm is used to flatten the shape of GIH of input image according to standard deviation of GIH. Then, the standard lookup table-based histogram equalization procedure is applied to get well enhanced image. Experimental results, using various remote sensing images, show that the proposed method generates enhanced images with more information and higher visual quality, compared with several conventional methods.
The array transducer is a key unit to the phased ultrasound imaging systems. While, size error or element failure of elements are often occurred on the array transducer. Those situations could make serious negative ef...
详细信息
ISBN:
(纸本)9781467398978
The array transducer is a key unit to the phased ultrasound imaging systems. While, size error or element failure of elements are often occurred on the array transducer. Those situations could make serious negative effects on the acoustic field distribution of an array and impact on the quality of ultrasound imaging. In this context, we propose a method to revise those effects of the element failure of an array transducer by the method of adjusting the excitation parameters of elements. The theoretical analysis and experiments results indicate that this method is effective and feasible on optimizing ultrasound image gathered by an array transducer with some failed elements.
With the development of networks, network bandwidth is increasing endlessly, but it appears narrow relative to the growing demand, and because of the environmental impact, the size of bandwidth is always changing. Thi...
详细信息
ISBN:
(纸本)9781424458516
With the development of networks, network bandwidth is increasing endlessly, but it appears narrow relative to the growing demand, and because of the environmental impact, the size of bandwidth is always changing. This paper presents a narrow bandwidth variable adaptive image transmission algorithm with an example of CDMA Network. Aiming at the environment variable and bandwidth allocation characters of CDMA Network, the transmitter terminal determines the network status through the TCP data packets feedback from the receiver, and adjusts UDP packets transmission time and packet size with the data frame length feature of CDMA network, thus adapts for the CDMA network bandwidth changes. Finally, the paper gives the test results of the algorithm. Test results show that the algorithm can quickly follow the changes of network bandwidth, and make full use of reliable bandwidth of CDMA network.
In order to extend lifespan of the Wireless Sensor Node, the research propose a self-adaptive algorithm (SESP) based on energy assessment of WSN nodes with identical hardware model and same parameters. The algorithm S...
详细信息
ISBN:
(纸本)9783319212067;9783319212050
In order to extend lifespan of the Wireless Sensor Node, the research propose a self-adaptive algorithm (SESP) based on energy assessment of WSN nodes with identical hardware model and same parameters. The algorithm SESP is able to choose the cluster head without sending message to learn the surplus energy of other nodes, thus reducing in-cluster communication and simplifying the calculation of energy assessment, and eventually reducing energy consumption of WSN nodes and extending their lifespan.
Digital image correlation (DIC) technique has been increasingly employed to implement surface deformation measurements in many engineering fields. Practically, it has been demonstrated that the choice of subset sizes ...
详细信息
Digital image correlation (DIC) technique has been increasingly employed to implement surface deformation measurements in many engineering fields. Practically, it has been demonstrated that the choice of subset sizes exerts a strong influence on measurement results of DIC, especially when there exists locally larger deformation over the subsets involved. This paper proposes a novel subpixel registration algorithm with Gaussian windows to implicitly optimize the subset sizes by adjusting the shape of Gaussian windows in a self-adaptive fashion with the aid of a so-called weighted zero-normalized sum-of-squared difference correlation criterion. The feasibility and effectiveness of the self-adaptive algorithm are carefully verified through a set of well-designed synthetic speckle images, which indicates that the presented algorithm is able to greatly enhance the accuracy and precision of displacement measurements as compared with the traditional subpixel registration methods. (C) 2013 Elsevier Ltd. All rights reserved.
SOH (state of health) of the single battery is considered to be an important basis for the maintenance and update of battery-power station. Combined with the changing relationship between the battery discharge voltage...
详细信息
ISBN:
(纸本)9781479943159
SOH (state of health) of the single battery is considered to be an important basis for the maintenance and update of battery-power station. Combined with the changing relationship between the battery discharge voltage and some other factors, such as the discharge current, the discharge capacity, the internal resistance of the battery, and the remaining capacity, a new algorithm that can be used for the estimation of each single battery's SOH is proposed in this paper. Because of the fact that the parameters and the function curves in this algorithm could be obtained by the recursive least square algorithm and BP network, the algorithm can make self-adaptive adjustment even for tiny differences. Through the trial test on the lithium iron phosphate battery power station, it has been verified that the algorithm has high estimation accuracy.
In order to extend lifespan of the Wireless Sensor Node, the reseach propose a self- adaptivealgorithm(SESP) based on energy assessment of WSN nodes with identical hardware model and same parameters. The algorithm SE...
详细信息
In order to extend lifespan of the Wireless Sensor Node, the reseach propose a self- adaptivealgorithm(SESP) based on energy assessment of WSN nodes with identical hardware model and same parameters. The algorithm SESP is able to choose the cluster head without sending message to learn the surplus energy of other nodes, thus reducing in-cluster communication and simplifying the calculation of energy assessment, and eventually reducing energy consumption of WSN nodes and extending their lifespan.
To accurately infer the cognitive level of students, an examination system model based on multi-Agent-system (MAS) was presented This model mainly was composed of a cognitive analysis of students agent, Intelligent pa...
详细信息
To accurately infer the cognitive level of students, an examination system model based on multi-Agent-system (MAS) was presented This model mainly was composed of a cognitive analysis of students agent, Intelligent paper composition and intelligent examination agent. An algorithm was proposed for generating examination papers based on students' mastery of knowledge points. The intelligent network platform for common examination was realized. Experiments have showed that the system was adaptive and feasible.
暂无评论