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2011 International Conference on Electric Information and control engineering, ICEICE 2011

作者： Liu, Hongyu Liu, Junqing School of Mechanical Engineering and Automation University of Science and Technology Liaoning Anshan China Department of Automatic Control Shenyang Institute of Engineering Liaoning 110136 China

ISBN: (纸本)9781424480395

Hydraulic support is the key equipment of coal excavation with full mechanization. Hydraulic support must pass national strength test before it quantity production and use. Hydraulic support model test based on similarity theory is a new effective hydraulic support design and test method. The test information such as displacement, stress, strain and so on can be generalized to hydraulic support prototype, which can prompt hydraulic support design. In order to satisfy the need of hydraulic support model test, the data collecting and processing system of hydraulic support model test was established, the data collecting and processing system software of hydraulic support model test was programmed, the tress computation software of practical measurement data of hydraulic support model test was programmed, which provide practical and convenient research method for hydraulic support model test. By the data collecting and processing system software of hydraulic support model test and related software, user can realize the function such as data collecting, real time display, saving, analysis and processing to strain signals. © 2011 IEEE.

关键词： Excavation

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Development of embroidery machine vector control speed regulation system based on DSP

Development of embroidery machine vector control speed regul...

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International Conference on Power Electronics Systems and Applications

作者： Li, Yong-Yang Cao, Guang-Zhong Qiu, Hong Pan, J.F. Yang, Chong-Chong Institute of Automation Shenzhen University Shenzhen 518060 China College of Mechatronics and Control Engineering Shenzhen University Shenzhen 518060 China

ISBN: (纸本)9781457702051

Based on the rotor field oriented control principle and space vector PWM technology, a vector control speed regulation algorithm applied to embroidery machines is developed based on DSP. Combined with the theoretical analysis, a kind of Anti-Windup PI controller is adopted based on output feedback calculations, and a discrete simulation model of the vector control speed regulation system is built on Matlab/Simulink platform. After the completion of the system hardware design, the entire control system software design and programming are completed based on the TMS320F2801 fixed-point DSP. Results of simulation and experiments show that the designed system meets the needs of a practical application in spindle actuator of the embroidery machine. © 2011 IEEE.

关键词： Simulink

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Supporting runtime decision making in the production automation domain using design time engineering knowledge

Supporting runtime decision making in the production automat...

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1st International Workshop on Ontology and Semantic Web for Manufacturing 2011, OSEMA 2011 - Co-located with the 8th Extended Semantic Web Conference, ESWC 2011

作者： Moser, Thomas Sunindyo, Wikan Danar Merdan, Munir Biffl, Stefan Christian Doppler Laboratory Software Engineering Integration for Flexible Automation Systems Vienna University of Technology Vienna Austria Automation Control Institute Vienna University of Technology Vienna Austria

Complex production automation systems are often represented as multi-agent systems which need to be reconfigured correctly and efficiently to adapt to new requirements. While the system knowledge is available at design time in form of workshop layouts, product trees or production strategies, at run-time this knowledge is often not available and therefore not used at all for operational decision making. In this paper we describe an engineering ontology used for the representation of design time engineering knowledge for supporting run-time decisions. We evaluate the proposed approach using three scenarios from the production automation domain. Major result was that the explicitly available design time knowledge can provide valuable input to runtime decisions.

关键词： Decision making

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Optimization on thrust ripple of an axial-flux permanent-magnet linear synchronous machine

Optimization on thrust ripple of an axial-flux permanent-mag...

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2011 International Conference on Electrical Machines and Systems, ICEMS 2011

作者： Shi, Wei Xiao, Chong Lei, Yu Yu, Bin Wu, Fan Zheng, Ping School of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150080 China Beijing Research Institute of Precise Mechanical and Electronic Control Equipment China

ISBN: (纸本)9781457710445

This paper focuses on decreasing the thrust ripple of an axial-flux permanent-magnet linear synchronous machine (PMLSM) used for free-piston Stirling engines. A typical 1kW machine with 10 poles and 9 slots is investigated. By finite-element method (FEM), detent force and thrust ripple are analyzed for different axial and radial dimensions of the end stator tooth. Meanwhile, the similar trends of no-load detent force and load thrust ripple has been found. To verify the proposed method, prototype machine was manufactured and tested. © 2011 IEEE.

关键词： Finite element method

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Multiple Fading Factors Kalman Filter for SINS Static Alignment Application

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Chinese Journal of Aeronautics 2011年第4期24卷 476-483页

作者： GAO Weixi MIAO Lingjuan NI Maolin Sehool of Automation Beijing Institute of Technology Beijing 100081 China National Key Laboratory of Science and Technology on Space Intelligent Control Beijing Institute of Control Engineering Beijing 100190 China

To solve the problem that the standard Kalman filter cannot give the optimal solution when the system model and stochastic information are unknown accurately, single fading factor Kalman filter is suitable for simple systems. But for complex systems with multi-variable, it may not be sufficient to use single fading factor as a multiplier for the covariance matrices. In this paper, a new multiple fading factors Kalman filtering algorithm is presented. By calculating the unbiased estimate of the innovation sequence covariance using fenestration, the fading factor matrix is obtained. Adjusting the covariance matrix of prediction error Pk｜k-1 using fading factor matrix, the algorithm provides different rates of fading for different filter channels. The proposed algorithm is applied to strapdown inertial navigation system （SINS） initial alignment, and simulation and experimental results demonstrate that, the alignment accuracy can be upgraded dramatically when the actual system noise characteristics are different from the pre-set values. The new algorithm is less sensitive to uncertainty noise and has better estimation effect of the parameters. Therefore, it is of significant value in practical applications.

关键词： inertial navigation systems strapdown initial alignment fading filter multiple fading factors fenestration

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Dynamic modeling and simulation test of a 60 kW PEMFC generation system

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2011年第6期12卷 475-482页

作者： Ying-ying ZHANG Ji-chang SUN Ying ZHANG Xi LI Ouang-yi CAO Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology Shandong Academy of Sciences Institute of Oceanographic Instrumentation Qingdao 266001 China Control Science and Engineering Department Key Laboratory of Education Ministry for Image Processing and lntelligent Control Huazhong University of Science & Technology Wuhan 430074 China Fuel Cell Institute Department of Automation Shanghai Jiao Tong University Shanghai 200030 China

In this paper,a 60 kW proton exchange membrane fuel cell(PEMFC) generation system is modeled in order to design the system parameters and investigate the static and dynamic characteristics for control *** achieve an overall system model,the system is divided into five modules:the PEMFC stack(anode and cathode flows,membrane hydration,and stack voltage and power),cathode air supply(air compressor,supply manifold,cooler,and humidifier),anode fuel supply(hydrogen valve and humidifier),cathode exhaust exit(exit manifold and water return),and power conditioning(DC/DC and DC/AC) *** a combination of empirical and physical modeling techniques,the model is developed to set the operation conditions of current,temperature,and cathode and anode gas flows and pressures,which have major impacts on system *** current model is based on a 60 kW PEMFC power plant designed for residential applications and takes account of the electrochemical and thermal aspects of chemical reactions within the stack as well as flows of reactants across the *** simulation tests show that the system model can represent the static and dynamic characteristics of a 60 kW PEMFC generation system,which is mathematically simple for system parameters and control designs.

关键词： Proton exchange membrane fuel cell(PEMFC) Generation system Dynamic simulation model Reactant flow

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Strength analysis of 130t liquid iron tank shell

Strength analysis of 130t liquid iron tank shell

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2011 International Conference on Electric Information and control engineering, ICEICE 2011

作者： Liu, Hongyu Liu, Junqing School of Mechanical Engineering and Automation University of Science and Technology Liaoning Liaoning Anshan China Department of Automatic Control Shenyang Institute of Engineering Liaoning 110136 China

ISBN: (纸本)9781424480395

This paper took 130t liquid iron tank shell as research object. First, three dimensions solid model of 130t liquid iron tank shell model was constructed by ANSYS software. Then, relevant computation parameters were input, grid was divided, restriction and load were exerted. Finally, strength finite element analysis was made on 130t liquid iron tank shell finite element model under slow lifting working condition. The relevant equivalent stress distribution rule of liquid iron tank shell was found. 130t liquid iron tank shell can satisfy use under slow lifting working condition was proved. This research provides a scientific theory base for accurate design, reasonable weight loss and safe use of 130t liquid iron tank. © 2011 IEEE.

关键词： Finite element method

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A new game algorithm for power control in cognitive radio networks

A new game algorithm for power control in cognitive radio ne...

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作者： Li, Feng Tan, Xuezhi Wang, Li School of Electronics Information Engineering Harbin Institute of Technology Harbin 150080 China Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150080 China

Based on the analysis of the feature of cognitive radio (CR) networks, we build a relevant interference model. Cognitive users should particularly consider the problem of interference with licensed users and satisfy the signal-to-interferenceplus-noise ratio (SINR) requirement at the same time. We propose a new iterative algorithm using the game theory in this paper. We consider not only the SINR requirement as other game algorithms but also the influence of power threshold. The variable power limit is the characteristic of CR. We prove the convergence of the algorithm and the existence of Nash equilibrium. According to different power thresholds, we give an approach for solving the problem of coexistence between licensed user and cognitive user in a cognitive system. The algorithm has the advantage that it can be distributively implemented, and the method converges relatively fast. Numerical results are presented to show that the proposed approach has better antinoise effect and capacity. © 2011 IEEE.

关键词： Cognitive radio

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Model Based Optimisation of a Step in Acceleration for a CR-Diesel Engine

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IFAC Proceedings Volumes 2011年第1期44卷 13016-13021页

作者： Heiko Sequenz Matthias Mrosek Simon Zydek Rolf Isermann Institute of Automatic Control Laboratory of Control Engineering and Process Automation Technical University Darmstadt Germany

Abstract Due to more and more stringent emission regulations the optimisation of transient engine operation becomes necessary for future Diesel engine developments. Exemplary for the transient operation a step in acceleration pedal is investigated and optimised with respect to the engine emissions. This gives insights about the emission formation at transient driving and a benchmark for the design of open and closed-loop controls. A model structure to simulate the engine emissions and the engine torque is presented. It consists of a dynamical mean value air path model and a stationary combustion model. Thus the relevant outputs NO x , soot and torque are simulated with respect to the engine actuators. For optimisation the calibrated emission values for steady state are regarded. The actuators of the air path and the crank angle of the main injection are optimised such that the emissions follow a desired trajectory. The results are compared to a non-optimised step in acceleration and to a nonlinear closed loop control of the air path.

关键词： Emission Models Air Path Models Optimisation

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Emission Model Structures for an Implementation on Engine control Units

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IFAC Proceedings Volumes 2011年第1期44卷 11851-11856页

作者： Heiko Sequenz Rolf Isermann Institute of Automatic Control Laboratory of Control Engineering and Process Automation Technical University Darmstadt Germany

Abstract The number of model-based approaches in modern engine control units (ECUs) increases permanently with the increase of engine complexity. Therefore the efficient storage and the fast computation of these models is a challenging task. Due to their fast computation properties most ECUs utilize 2-dimensional grid map structures. Higher dimensional relations need then to be mapped with nested structures of several 2-dimensional grid maps. The determination of suited structures is a time-consuming task and the number of utilized 2-dimensional grid maps may be large for higher dimensional relations. Therefore in the following a grid map structure, a LOLIMOT structure, a Kernel method and an adaptive polynomial approach are compared with respect to model accuracy, computation time and required memory. Conclusions about the implementation on state of the art ECUs are given. As model output the NO x emissions of a DTH Z19 Opel CR-Diesel engine with VGT-turbocharger and exhaust gas recirculation are regarded. Model structures are presented for a global model approach comprising the engine operation point as input, and for a global-local approach predicting the output by weighting local models.

关键词： Emission Models ECU Model Computing Time Model Memory Demand

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