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The method of modeling a kind of highly nonlinear process using neural network is presented, in which a CSTR (Continuous Stired Tank Reactor) system involved a strong acid-strong base react is studied as a typical case of highly nonlinear process, and convergence problem is discussed preliminarily during neural network modeling. It has been pointed out that the three layered BP neural network has...
Injection molding machine is a specialized plastic molding machines, whose control technology is the one of the key technologies to enhance the overall technical level of the injection molding machine. Injection molding machine controller was introduced based on a ARM processor using the PID neural network forward algorithm in this paper. The the design plan of the controller software was given, and...
Embedded FMS has many advantages, such as control flexibility, simplicity, good real-time, low cost etc. Open CNC system integrated embedded FMS can solve the existing problems between traditional NC system and industrialized production of NC application software. This paper adopts the structure of “NC embedded PC type”, designed an open CNC system based on the IPC and movement control card. The open...
The paper introduces the design of the super monitoring system of the reaction kettle, the serial communication between the super computer and the multichannel distributional lower computer, as well as the design of monitoring surface which has been realized using VB. The system has the powerful data-handling capacity and the image display ability, and may carry on the control through the data transfer...
With the development of GIS, map maker, and especially digital earth, how to develop high level intelligent automatic cartographic generalization system has been one of the urgent problems. By developing an automatic generalization system called “GenerMap”, the research group saw that a good generalization system should obey the rules for example good usability, accuracy, intelligence, simpleness,...
The Service Oriented Approach offers a wide range of efficient applications using this approach also for control or monitoring tasks. This article introduces a distributed system designed for control tasks. The application based on this system uses objects interacting via events. Especially the usage of event based communication in control applications requires additional investigations regarding...
About parallel processing of RS image in Grid. According to task decomposition pattern, there are two schemes: single image-multilateral process and single image-single process. On the base of the contrast and analysis of the two schemes, we use the single image — multilateral process scheme, focus on the trait of batch RS image processing, solve the problem of transmission of massive RS pictures...
Existing access control models are unable to meet the requirements of a collaborative design in distributed network environment perfectly. Based on the character of collaborative design and RBAC model, a new model named message-driven access control model (MDACM) is established. In this model, the security problem that induced by distribution and dynamic of collaboration design was resolved, which...
The dividend problem is one of the principal problems in corporate governance. Taking a thorough and broad study on the dividend problem has important theory and practical value. In this paper the assets process of the corporation is assumed to be a stochastic process. Based on the introduction of controlled feedback process, a new idea in the dividend problem is given.
The way Oracle locked data in DML and the reasons for DML lock blocking were introduced in this study. To confirm the successful parallel visits to the same data for users, various lock technologies were adopted to realize the data integrality. The solving methods of Oracle locks blocking in some practical applications were presented.
A method to compress aeroengine test data is discussed in this paper. Three characteristics of test data are analyzed firstly. They are limited value range, limited variation range and limited value precision. Based on the characteristics, four processes including reducing decimal digits, eliding sign bit, eliding repeated value and eliding redundant coding bits are utilized to compress the data....
With the on-chip resources largely increased, the computing paradigm of modern architectures are much different from traditional ones. The relation between temporal computing and spatial computing is getting more and more intricate. In this paper, a coarse-grained reconfigurable architecture is proposed named as programmable dataflow computing architecture: ProDFA. With both fine-grained control ability...
In this paper, snoopy cache coherence protocols with update strategy have been studied, since description of protocols is apparently different in references, so we offer a common description in order to show simplicity and comparability protocols. Evaluating of protocols is in simulation level By limes simulator tools. Limes includes dragon protocol [1], that we added WTU and firefly protocols to...
Taking a sintering control system for example, according to the project circumstances, presents the overview of the project and application configuration software for the RSViewSE sintering control system design. Concise friendly human-machine interface, convenient in operation, reflected RSViewSE in practical application flexibility and excellence.
With the rapid development of modern industry, the scale of the production process control continues to expand, it proposed the higher and higher requirements for the process control and production management system. This paper gives a detailed design description of the production line control system, which is designed by S7-200 PLC (Programmable Logical Controller). And then, it introduced the control...
Have a brief introduction of high accurate powder dosing system, in order to solve the difficulty in pursuit of high accurate in powder dosing system, researched and analyzed the working character in the last phase -the phase of accurate control, and applied fuzzy control in it to avoided the problem in the construction of the mathematical model. We calculated the inquiring table of the fuzzy rules,...
According to the reform of solid tire curing system in a military industry enterprise, the concrete realization scheme of the solid tire curing system ,which is based on the characteristics of nonlinear property, time-varying and pure hysteresis of control object in the solid tire curing process of pot-type vulcanization machine, is designed to precisely control the curing condition of pot-type vulcanization...
The non-uniformities of series connected Lithium-ion batteries for electric vehicle severely decrease the storage capacity and cycle life time of the batteries, so it is very important to research on battery equalization and management system. This paper reviews the disadvantages of previous equalization systems, and then presents a bidirectional equalization and management system applied on EV. Furthermore,...
The problem of analog system design for a minimal computer time has been formulated as the functional minimization problem of the control theory. The design process in this case is formulated as the controllable dynamic system. The conception of the Lyapunov function of dynamic controllable system is used to analyze the principal characteristics of the design process. The different forms of the Lyapunov...
This paper presents one parameter tuning of PID parameters considering the trade off problem of load disturbance and robustness. And its reduction method for computer calculation is also proposed in this paper. One parameter PID tuning method has been proposed by using maximum sensitivity. PID parameters are calculated by using geometric relationship between circle Ms and L(jω). Several PID parameters...
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