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In embedded system design, hardware/software (HW/SW) partitioning is the NP-complete problem which searches reasonable composition of hardware and software components which not only satisfies the constraint of hardware but also optimizes the execution time. Blocks derive from the functional specification internally represented as control/data flow graph. In this paper, the model of the embedded system...
In order to reduce the restrained conditions on the disturbance, a robust tracking control approach is presented based on fuzzy disturbance observer for a class of uncertain nonlinear MIMO systems. Novel parameters update laws based on Lyapunov theory and control laws are proposed to guarantee that all the signals in the system are uniformly ultimately bounded and achieve given tracking performance...
Because of the dead-zone nonlinearity characteristic in pneumatic system, high steady state error and overshoot have occurred in the position response as a typical imperfect implementation of associated control dynamic. In this situation, there is a necessity to be able to effectively utilizing the intelligent controller framework. The primary purpose of this research is to develop a control algorithm...
In order to reduce the shooting instant error of the naval artillery digital servo system which has large impact torque when naval artillery is shooting, it is necessary to enhance the robustness and the antijamming ability of the naval artillery digital servo system, and a self-regulating grading fuzzy sliding control scheme with interference observer. Firstly, an interference observer was designed...
In this paper, we describe a method for removing noise from digital images, based on bilateral filter and Gaussian scale mixtures (GSM) in shiftable complex directional pyramid (PDTDFB) domain. Firstly, the noisy image is decomposed into different subbands of frequency and orientation responses using a PDTDFB transform. Secondly, the bilateral filter, which is a nonlinear filter that does spatial...
For the purpose of improving to redundancy of the transmission path, compensating for poor communication quality of wireless communication in harsh industrial environments and partly improving reliability of industrial wireless networked control system (WNCS), the multi-path transmission mechanism based on topology of dual-band and secondary structure is proposed. The topology of dual-band and secondary...
In order to improve the tracking and positioning accuracy of theodolite self-stabilization tracking based on mobile platform, the position of object is transformed from platform coordinate system to earth coordinate system by using coordinate axis circumrotation. A method of forecast tracking technique based on mobile platform is presented. The former compound angle is transform from platform coordinate...
A cloud model-based multiple attribute evaluation method is put forward. The ways of the cloud transformation is used to represent the cloud model of each different attribute. On the base of one-dimension cloud, the multidimensional cloud model of system is confirmed. And then, evaluation value is achieved by calculating the deviation degree of the system cloud gravity center from the ideal cloud...
To ensure the normal operation of the urban functions, the telecommunication network is one of the most important parts of support system. Modern urban functions have been changed from single to multiple, and the functions are continuous being optimized. How can we make telecom network construction and development more responsive to changes in today's urban functions become the focus of recent studies...
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore, According to this method, a test system for dynamic imaging of space TDICCD camera was designed...
In this paper, based on analyzing the two existing queue scheduling algorithms WRR and DWRR, an improved scheduling algorithm, called DWRR+, is presented, which is the resolution for the fairness of bandwidth allocation of the WRR algorithm. The ns-2 simulations show that the improved scheduling algorithm not only offers the service of the minimum guaranteed bandwidth but also implements the fair...
The standard GB/T 20438 contains a lot of useful information and guidance for safety improvement regarding the use of safety systems. However, some of the basic concepts and methods for loss of safety qualification are somewhat confusing in domestic. This paper presents the concepts of safety life cycle, risk and safety integrity level, and all that concepts are clarified to avoid misunderstanding...
Using the features and technology of wireless sensor networks such as distributed and self-organization to build substation temperature monitoring system, which can monitor the temperature of bus bar junction of the high voltage switchgear in substation in real time to prevent fire and other accidents. This system applies ZigBee communication protocol, and uses the CC2430 as RF transceiver. It has...
The paper develops the map matching algorithm based on GPS/DR integrated positioning system through the determination of error influence area, the choice of matching road section and the modification of positioning information, and then evaluates the reliability of the matching result through the fuzzy comprehensive evaluation. The algorithm is test with the outdoor in-vehicle experiment and has shown...
Based on a cab suspension system of a commercial vehicle, a multi-body dynamic model was built on ADAMS Software for the vibration modal analysis. An Experiment was taken for the verification of the model's accuracy. Through the energy decoupling theory, the cab suspension system was optimized. By analyzing the optimized parameters, the suspension's stiffness and position were determined, which gave...
A multi-body dynamics model of commercial vehicle cab suspension was built with ADAMS through the interactive method. The cab suspension model was simulated with vibration transmission characteristics methods. The model accuracy was testified by comparing with both bench test and road test results. The simulation model was optimized by Sequential Quadratic Programming method, and the stiffness and...
The cooperation of UTCS (Urban Traffic Control System) and UTFGS (Urban Traffic Flow Guidance System) performs an important function at alleviating traffic jam, improving urban traffic environment and advancing the street capacity. Because it's a complex system, we have to study it with intelligent method. The system framework and agent structure based on CSCW and Multi-Agent are discussed after the...
As instrumentation development becomes more miniature and intelligent, the control system is at a very important position. Protein-nucleic acid analytical instrument use capillary electrophoresis technology, which is a rapid developing separate analysis technique in the global industry in the late eighties. The analyzer is based on S3C44B0 and it uses feedback control method for real-timely controlling...
The train scheduling is a crucial part of modern railway operation system. The train schedule optimization problem is exceptionally large-scale and hardly solved via the conventional mathematical method. In this paper, the double-track railway train schedule optimization is concerned. Based on the characteristics of the double-track railway operation system, a novel train schedule optimization model...
The electronic throttle control (ETC) of an intake air control system for a gasoline engine is a typical nonlinear system because of its discontinuous nonlinear spring and model-parameter changes caused by external environmental variables. In this paper, we propose the use of an expanding sliding mode control (ESMC) in order to improve the responsiveness of the ETC and so realize higher intake-air...
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