机床整体控制专家系统及智能柔性驱动编程方案(17页).doc

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1、-Expert Systems with ApplicationsThis paper introduces a complete design method to construct an adaptive fuzzy logic controller (AFLC) for DCDC converter. In a conventional fuzzy logic controller (FLC), knowledge on the system supplied by an expert is required for developing membership functions (pa

2、rameters) and control rules. The proposed AFLC, on the other hand, do not required expert for making parameters and control rules. Instead, parameters and rules are generated using a model data file, which contains summary of inputoutput pairs. The FLC use Mamdani type fuzzy logic controllers for th

3、e defuzzification strategy and inference operators. The proposed controller is designed and verified by digital computer simulation and then implemented for buck, boost and buckboost converters by using an 8-bit microcontroller.Article Outline1. 2. 3. 4. 5. 6. Fusion Engineering and DesignThe old TE

4、XTOR control systems have successfully been updated. The machine control has replaced bytextorCC, a solution based on the software package WinCC produced by Siemens. WinCC, and thereforetextorCC, can be easily integrated with the already available Siemens S5/S7 hardware components. This new system h

5、as the advantage that it is based on industrial soft- and hardware components.Therefore, the lifetime of the control system is extended and the maintenance effort is reduced. The installation and commissioning of the new control system was done in parallel to TEXTOR operation. During this time each

6、function was tested and compared with the actual TEXTOR data. All functionality of the former control system was step-by-step replaced. Special attention was given to the visualization, data and error logging. The machine control timing system has been replaced by an in house development in partners

7、hip with Siemens. It consists of transmitters and receivers based on PROFIBUS modules and is fully compatible with the pre-existing timing infrastructure. The old programmable function generator (PFG) has been replaced by compact RIO modules, controlled and programmed by Labview. This new PFG system

8、 allows to program up to 84 different time dependent signals. In this paper we intent to present a more detailed overview of our, on WinCC-based work, and a first status report on this new control system for TEXTOR.Article Outline1. 2. 2.1. 2.2. 2.3. 2.3.1. 2.3.2. 2.3.3. 3. 4. The control system of

9、the cryogenic facility in the JT-60 NBI system has been replaced by employing the PLC (Programmable Logic Controller) and SCADA (Supervisory Control And Data Acquisition) system. The original control system was constructed about 20 years ago by specifying the DCS (Distributed Control System) compute

10、r to deal with 400 feedback loops. Recently, troubles on this control system have increased due to its age-induced deterioration. To maintain the high reliability of the cryogenic facility, a new control system has been planned with the PLC and SCADA systems. Their attractive features include high m

11、arket availability and cost-effectiveness, however, the use of PLC for such a large facility with 400 feedback loops has not been established because of insufficient processing capability of the early PLC. Meanwhile, the recent progress in the PLC enables to use the FBD (function block diagram) prog

12、ramming language for 500 function blocks. By optimizing the function blocks and connecting them in the FBD language, the feedback loops have been successfully replaced from DCS to PLC without a software developer. Moreover, an oscillation of the liquid He level, which often occurs during the cooldow

13、n mode of the cryopumps, can be automatically stabilized by easily adding a new process program in the PLC. At present, the new control system has worked well.Article Outline1. 2. 3. 3.1. 3.2. 4. 5. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors

14、 and Associated EquipmentThe Electromagnetic Calorimeter (ECAL) of the Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is a crystal homogeneous calorimeter made of about 76000 lead tungstate crystals. The detector was installed in the CMS experimental cavern in 2007 and

15、2008 and was commissioned with cosmic rays and with LHC beams in 2008. The trigger and data acquisition system of the CMS ECAL comprises 35000 Front End ASICs and 170 Off Detector VME Boards. The operation of the system, performed by the ECAL online software, requires the configuration of O(107) par

16、ameters and the realtime monitoring of O(105) registers. In this paper we discuss the design and architecture of the ECAL online software and its performances in cosmic ray runs and with the first LHC beams.Article Outline1. 2. 3. 4. We demonstrate a concept for pulse-width modulation (PWM) control

17、of a parallel DCDC buck converter, which eliminates the need for multiple physical connections of gating/PWM signals among the distributed converter modules. The proposed control concept may lead to easier distributed control implementation of parallel DCDC converters and distributed power systems.

18、For equipment with significant power requirement, the traditional single power supply may not be adequate. Many power supplies with parallel regulation control can be used to solve this problem. This paper proposes a Proportional-Integral-Derivative (PID) controller to control paralleled DCDC buck c

19、onverters and current sharing is achieved. A genetic algorithm (GA) is employed to derive optimal or near optimal PID controller gains. Both simulations and experimental results are provided to verify the theoretical analysis through an experimental prototype of paralleled DCDC buck converters.Artic

20、le Outline1. 2. 3. 4. 4.1. 4.2. 5. Power SourcesA fuel cell powered system is regarded as a high current and low voltage source. To boost the output voltage of a fuel cell, a DC/DC converter is employed. Since these two systems show different dynamics, they need to be coordinated to meet the demand

21、of a load. This paper proposes models for the two systems with associated controls, which take into account a PEM fuel cell stack with air supply and thermal systems, and a PWM DC/DC converter. The integrated simulation facilitates optimization of the power control strategy, and analyses of interrel

22、ated effects between the electric load and the temperature of cell components. In addition, the results show that the proposed power control can coordinate the two sources with improved dynamics and efficiency at a given dynamic load.Article Outline1. 2. 2.1. 2.1.1. 2.1.2. 2.2. 2.3. 2.4. 3. 4. 5. 6.

23、 International Journal of Hydrogen EnergyIn this paper, an interleaved soft-switched active-clamped LL type current-fed half-bridge isolated dcdc converter has been proposed. The LL type active-clamped current-fed converter is able to maintain zero-voltage switching (ZVS) of all switches for the com

24、plete operating range of wide fuel cell stack voltage variation at full load down to light load conditions. Active-clamped circuit absorbs the turn-off voltage spike across the switches. Half-bridge topology maintains higher efficiency due to lower conduction losses. Soft-switching permits higher sw

25、itching frequency operation, reducing the size, weight and cost of the magnetic components. Interleaving of the two isolated converters is done using parallel input series output approach and phase-shifted modulation is adopted. It reduces the input current ripple at the fuel cell input, which is re

26、quired in a fuel cell system and also reduces the output voltage ripples. In addition, the size of the magnetic/passive components, current rating of the switches and voltage ratings of the rectifier diodes are reduced.Article Outline1. 2. 3. 4. Appendix. The Korea Superconducting Tokamak Advanced R

27、esearch (KSTAR) control system has been developed as a network-based distributed control system composed of several sub-systems. There are many local control systems for various sub-systems, and the central control system includes discharge control, machine control, and safety interlocks which aim f

28、or integrated control of the entire system. We have chosen the Experimental Physics and Industrial Control System (EPICS) as the middleware of the KSTAR control system because EPICS provides a software framework to integrate heterogeneous systems. The discharge control system, which is implemented i

29、n a part of the supervisory control system, performs the discharge sequence execution. The plasma control system, which has been implemented with general atomics and modified for KSTAR, is involved in the discharge control. The plasma control system performs real-time plasma control algorithms and p

30、rovides the results of the control algorithms to the magnet power supplies. We are using a reflective memory-based real-time network for communication between the plasma control system and the magnet power supplies, thus we developed a fully digital control for the magnet power supplies. We have imp

31、lemented the discharge control system with state notation language (SNL) in EPICS and also developed interface software among the sub-systems. We will present the details of the development of the KSTAR discharge control system and commissioning results.Article Outline1. 2. 3. 4. In order to control

32、 large-scale accelerators efficiently, a control system with a virtual accelerator model was constructed. The virtual accelerator (VA) is an on-line beam simulator provided with a beam monitor scheme. The VA is based upon the Experimental Physics and Industrial Control System (EPICS) and is configur

33、ed under the EPICS input/output controller (IOC) in parallel with a real accelerator (RA). Thus, the machine operator can access the parameters of the RA through the channel access client and then feed them to the VA, and vice versa. Such a control scheme facilitates developments of the commissionin

34、g tools, feasibility study of the proposed accelerator parameters and examination of the measured accelerator data. This paper describes the beam commissioning results and activities by using the VA at the J-PARC 3-GeV rapid-cycling synchrotron (RCS).Article Outline1. 2. 2.1. 2.2. 3. 3.1. 3.2. 3.3.

35、3.4. 3.5. 4. 5. The CMS Resistive Plate Chambers (RPC) system consists of 912 double-gap chambers. The challenging constrains on the design and operation of this system imposed the development of a complex Detector Control System to assure the operational stability and reliability of a so large and

36、complex detector and trigger system . The final layout and functionality of the CMS RPC DCS as well as the operational experience during the detectors commissioning and first phase of LHC operation are presented here.Article Outline1. 2. 2.1. 2.2. 2.3. 3. 3.1. 3.2. 4. 5. Systems and SoftwareSoftware

37、 architecture has been established in software engineering for almost 40 years. When developing and evolving software products, architecture is expected to be even more relevant compared to contract development. However, the research results seem not to have influenced the development practice aroun

38、d software products very much. The architecture often only exists implicitly in discussions that accompany the development. Nonetheless many of the software products have been used for over 10, or even 20 years. How do development teams manage to accommodate changing needs and at the same time maint

39、ain the quality of the product? In order to answer this question, grounded theory study based on 15 semi-structured interviews was conducted in order to find out about the wide spectrum of architecture practices in software product developing organisations. Our results indicate that a chief architec

40、t or central developer acts as a walking architecture devising changes and discussing local designs while at the same time updating his own knowledge about problematic aspects that need to be addressed. Architecture documentation and representations might not be used, especially if they replace the

41、feedback from on-going developments into the architecturing practices. Referring to results from Computer Supported Cooperative Work, we discuss how explicating the existing architecture needs to be complemented by social protocols to support the communication and knowledge sharing processes of the

42、walking architecture.Article Outline1. 2. 2.1. 2.2. 2.3. 2.4. 2.5. 3. 3.1. 3.2. 3.3. 3.4. 4. 4.1. 4.2. 5. 5.1. 5.2. 5.2.1. 5.2.2. 5.3. 5.3.1. 5.3.2. 5.3.3. 5.4. 5.4.1. 5.4.2. 5.4.3. 5.5. 5.5.1. 5.5.2. 5.5.3. 5.5.4. 5.5.5. 5.5.6. 5.6. 5.7. 6. 6.1. 6.2. 6.3. 7. International Journal of Hydrogen Energy

43、 氢能源的电池组及其电子配件 交流直流转化与驱动Transient behavior is a key property in the vehicular application of proton exchange membrane (PEM) fuel cells. A better control technology is constructed to increase the transient performance of PEM fuel cells. A steady-state isothermal analytical fuel cell model is construc

44、ted to analyze mass transfer and water transport in the membrane. To prevent the starvation of air in the PEM fuel cell, time delay control is used to regulate the optimum stoichiometric amount of oxygen, although dynamic fluctuations exist in the PEM fuel cell power. A bidirectional DC/DC converter

45、 connects the battery to the DC link to manage the power distribution between the fuel cell and the battery. Dynamic evolution control (DEC) allows for adequate pulse-width modulation (PWM) control of the bidirectional DC/DC converter with fast response. Matlab/Simulink/Simpower simulation is perfor

46、med to validate the proposed methodology, increase the transient performance of the PEM fuel cell system and satisfy the requirement of energy management.Article Outline1. 2. 2.1. 2.2. 2.3. 3. 3.1. 3.2. 3.2.1. 3.2.2. 4. 4.1. 4.2. 5. 6. A quantitative, adaptive process control technique is described

47、using an industrially validated model of the software system test phase (STP) as the concrete target to be controlled. The technique combines the use of parameter correction and Model Predictive Control to overcome the problems induced by modeling errors, parameter estimation errors, and limits on t

48、he resources available for productivity improvement. We present an example of the technique applied to data from the execution of the STP of a commercial software development effort at a large software manufacturer. The example shows that the control technique successfully achieves the schedule and quality o