This paper presents the application of PLC and digital-to-analog with analog-to-digital conversion in the control system for electron beam welder. Concerning the requirements on the technical and process, computer com...
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ISBN:
(纸本)9780769549354
This paper presents the application of PLC and digital-to-analog with analog-to-digital conversion in the control system for electron beam welder. Concerning the requirements on the technical and process, computer communication and PLC application software were designed to demonstrate the feasibility of this method.
The proceedings contain 387 papers. The topics discussed include: the design of signal monitoring system based on low power wireless sensor network;network security situation evaluation method for distributed denial o...
ISBN:
(纸本)9780769549354
The proceedings contain 387 papers. The topics discussed include: the design of signal monitoring system based on low power wireless sensor network;network security situation evaluation method for distributed denial of service;application of singer tracking model in adaptive GPS signal tracking algorithm;finite element analysis and design on calibrating device of rotary electric field sensor;zeta potential modeling of papermaking wastewater on neural network;P2P Botnet detection based on irregular phased similarity;design of electric vehicles dc traction motor drive system based on optimal control;application of DAC and ADC in the control system for electron beam welder;sensor fusion based data parser of a GPS receiver for UAV systems;a novel testing method of twisted-pair primary parameter;the analysis on design of main parameters traceability datum for premium thread of OCTG;and design and implementation of PROFIBUS-DP intelligent slave station controller.
In enterprise information search environment, sensitivity of data security, diversity of data source and data formats, search for database are especial problems. In view of security and extensibility, the architecture...
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ISBN:
(纸本)9781467329644;9781467329637
In enterprise information search environment, sensitivity of data security, diversity of data source and data formats, search for database are especial problems. In view of security and extensibility, the architecture of an enterprise search system named EISI is proposed using metadata technology. The unified description model of heterogeneous information resources in enterprise is proposed for the management of search objects that is unstructured or structured, and the multi-level multi-granular security control is implemented based on the model. EISI is implemented by integrating existed index technology. EISI can adjust itself to the change of data source and data formats. The results of practical application indicate that both structured data and unstructured data can be searched in security, moreover the requirements of data search can be met effectively.
In the fault diagnosis field, the artificial intelligent information fusion technology is becoming an important research subject in recent years, which combines the artificial intelligence technology with the multi se...
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ISBN:
(纸本)9781467329644;9781467329637
In the fault diagnosis field, the artificial intelligent information fusion technology is becoming an important research subject in recent years, which combines the artificial intelligence technology with the multi sensor information fusion, and is beneficial to solve the information fusion of inexact and uncertain information greatly, therefore the method of information fusion based on neural network, intelligent and expert system, become an important development direction. The article has introduced the research status and the existing problems of the fusion method which based on the expert system and the neural network. After a analysis and comparison between the expert system and the neural network, it would overcome their shortcomings and get better results by combining the two. As an application, it combined the neural network expert system for fusion method with specific medical diagnostic equipment - biochemical analyzer, and got the right trouble result by making a simulation experiment.
The approach to dynamic system modelling in the linear differential equations form is presented. The given approach fits the identification problems with the system output observations sample and the input sample even...
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ISBN:
(纸本)9789898565204
The approach to dynamic system modelling in the linear differential equations form is presented. The given approach fits the identification problems with the system output observations sample and the input sample even if the output data is distorted by a noise. The structure and parameters identification problem is reduced to a global optimization problem, so that every solution consists of the model structure and its parameters. This allows searching the analytical model in the ordinary differential equation form with any limited order. The analytical model delivers a special benefit in its further use in the control and behaviour estimation problem.
Avionics system has strict requirement for real-time, reliability and resources utilization, so performance analysis is very important at the design stage. There is no special modeling language in avionics domain. It&...
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ISBN:
(纸本)9780769549354
Avionics system has strict requirement for real-time, reliability and resources utilization, so performance analysis is very important at the design stage. There is no special modeling language in avionics domain. It's comparatively complex to use standard UML to model avionics system. Through analyzing features of avionics and MARTE stereotypes, this article puts forward a key parameter oriented meta-model for avionics system performance modeling and validates the usability by an example.
The essence of education and teaching is to make education alive, and the ultimate goal is to make it develop and cultivate more talents. According to ecological teaching, the elements like teacher, student, teaching ...
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ISBN:
(纸本)9781467329644;9781467329637
The essence of education and teaching is to make education alive, and the ultimate goal is to make it develop and cultivate more talents. According to ecological teaching, the elements like teacher, student, teaching contents and environment are considered as an interacting dynamic system, and construct an entire, harmonious and persistent developing teaching model and accomplish the teaching goal. Internet-based interactive education techniques may be of help to solve the problems of limited resources and limited class hours in current ecological teaching. Interactive teaching can motivate students' Interests and passions for studying, widen their horizon and enhance their cooperation spirit and innovation ability. Meanwhile, teachers are also able to learn a lot. Therefore, teaching benefits teachers as well as students.
Although Real-Time Operating systems (RTOS) have already been widely used, the issue regarding their robustness is far from being solved. The Software-implemented fault injection (SWIFI) is widely used to evaluate the...
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ISBN:
(纸本)9781467329644;9781467329637
Although Real-Time Operating systems (RTOS) have already been widely used, the issue regarding their robustness is far from being solved. The Software-implemented fault injection (SWIFI) is widely used to evaluate the robustness of the software components, and many efforts have been made with this method. In this paper, a new model is proposed for the robustness evaluation of RTOS, which is independent of the concrete RTOS. Errors are injected through a public application program interface (API) and a comprehensive robustness metrics system which is based on the public API is proposed. We have evaluated the robustness of Vxwork5.4, Rtems4.10, and Ucos2.62 with our model and found eight bugs in Vxworks5.4, four bugs in Ucos2.62 and one bug in Rtems4.10.
Deformations due to the impact of cutting force are factual and a principal source of error, the cutting force induced errors cannot be disregards and mere controlled by technical skill. In this paper, based on the co...
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A completely linear approach for binocular CCD ranging system calibration is presented in this paper, and it improves the Tsai's calibration algorithm. First, we are solving the other internal and external camera ...
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ISBN:
(纸本)9781467329644;9781467329637
A completely linear approach for binocular CCD ranging system calibration is presented in this paper, and it improves the Tsai's calibration algorithm. First, we are solving the other internal and external camera parameters based on Radial-Array-Constraints and first-order radial distortion model, which include focal length, first-order radial distortion parameter, rotation matrix and translation vector. Next, the calibration of binocular CCD ranging system includes baseline of the high precision binocular ranging system, relative position of two image plane and optical axis angle of two cameras. Finally, basing on the results of calibration, we are amending the binocular ranging formula. Experiments show that the precision is higher for most of the camera calibration, the method has wide applicative value. The application of this method, the actual measurement accuracy of 3km target is less than 0.5%, it can satisfy the requirements of high precision of binocular CCD ranging system.
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