摘要：
A method for compensating nonlinear characteristic of thermocouple vacuum gauge is proposed. Least squares support vector machine (LS-SVM) is adopt as compensation model, of which parameters are optimized using particle swarm optimization (PSO) algorithm. Experimental results using data obtained on-site show that the proposed approach effectively compensates the nonlinearity characteristic, and the accuracy of this method is higher than those obtained by SVM model.
作者机构：
[Luo, Qiang; Kuang, Zhonghua; Li, Lanjun; Gao, Song] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.
会议名称：
the 25th Chinese Control and Decision Conference(第25届中国控制与决策会议)
会议时间：
2013-05-01
会议地点：
贵阳
会议主办单位：
[Li, Lanjun;Gao, Song;Luo, Qiang;Kuang, Zhonghua] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
the 25th Chinese Control and Decision Conference(第25届中国控制与决策会议)论文集
关键词：
Tobacco feeding by air;ARM;Closed-loop control;human machine interface
摘要：
In tobacco industry, the air for feeding tobacco and the air for dusting are supported simultaneously to save energy and reduce emission. Feeding speed is vital to the quality of the production. The paper puts forward a control system based on Advanced RISC Machines(ARM), touch panel and PLC. It describes the component structure of control system, control principle and the design of hardware and software in detail. Testing results showed that the built system is running well in the cigarette maker and demonstrated excellent performance like fast and accurate response and strong robustness. Air speed during feeding is controlled precisely with deviation less than +/- 1 m/s. The system satisfied all standards of design requirement. Effective tobacco feeding will increase production safety and decrease energy and tobacco consumption.
通讯机构：
[Zhao, Yuhong] U;Univ South China, Inst Elect Engn, Hengyang, Hunan, Peoples R China.
会议名称：
2nd International Conference on Energy, Environment and Sustainable Development (EESD 2012)
会议时间：
OCT 12-14, 2012
会议地点：
Jilin, PEOPLES R CHINA
会议主办单位：
[Zhao, Yuhong;Cheng, Wei] Univ South China, Inst Elect Engn, Hengyang, Hunan, Peoples R China.^[Zhao, Xuecheng] Shaoyang Vocat & Tech, Dept Elect Engn & Mech, Shaoyang, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Chaos;Particle Swarm;Short Term Load Forecasting;Support Vector Machine (SVM)
摘要：
The support vector machine (SVM) has been successfully applied in the short-term load forecasting area, but its learning and generalization ability depends on a proper setting of its parameters. In order to improve forecasting accuracy, aiming at the disadvantages like man-made blindness in the parameters selection of SVM, In this paper, the chaos theory was applied to the PSO (particles swarm optimization) algorithm in order to cope with the problems such as low search speed and local optimization. Finally, we used it to optimize the support vector machines of short-term load forecasting model. Through the analysis of the daily forecasting results, it is shown that the proposed method could reduce modeling error and forecasting error of SVM model effectively and has better performance than general methods.
作者机构：
[Luo, Xiao; Chen, Zhong-ze] Univ South China, Dept Elect & Informat Engn, Hengyang, Hunan, Peoples R China.;[Hu, Zhi-hua] Univ South China, Inst Nursing, Hengyang, Hunan, Peoples R China.
会议名称：
5th International Congress on Image and Signal Processing (CISP)
会议时间：
OCT 16-18, 2012
会议地点：
Chongqing Univ Posts & Telecommunications, Chongqing, PEOPLES R CHINA
会议主办单位：
Chongqing Univ Posts & Telecommunications
关键词：
retina neural mechanism;object edge detection;computational model
摘要：
In this paper, we present a bio-inspired model for detecting edges based on mathematic analysis of artificial retina response. And then mathematical analysis as well as computational design methods on the proposed retina model are dealt with. The characteristics of our model is that it just concerns four types of cells rather than traditional ones with five types of cells. Experimental results show that the proposed model based on retina neural mechanism for edge detection is efficient.
作者机构：
[Gu, Weili] Univ South China, Dept Urban Construct, Sch Energy & Power Engn, Changsha, Hunan, Peoples R China.;[Liu, Jianxiang] Univ South China, Dept Urban Construct, Hengyang, Hunan, Peoples R China.
通讯机构：
[Gu, Weili] U;Univ South China, Dept Urban Construct, Sch Energy & Power Engn, Changsha, Hunan, Peoples R China.
会议名称：
SSITE International Conference on Future Material Research and Industry Application (FMRIA 2011)
会议时间：
DEC 01-02, 2011
会议地点：
Macau, PEOPLES R CHINA
会议主办单位：
[Gu, Weili] Univ South China, Dept Urban Construct, Sch Energy & Power Engn, Changsha, Hunan, Peoples R China.^[Liu, Jianxiang] Univ South China, Dept Urban Construct, Hengyang, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Energy-saving optimization;Exergy loss;Irriversible process;The organic heat transfer material heater
摘要：
this paper studies the typical irreversible processes such as combustion and heat transfer with temperature difference based on the theory of thermodynamics, analyzes the influencing factors on exergy loss in irreversible processes, on the basis of this analysis, proposes the energy-saving optimization measures on design and operation management of the organic heat transfer material heater, and specially points out that in the design process, objective function can be constructed with the exergy loss as evaluation index to determine the outlet flue gas temperature of furnace and the flue gas temperature, and provides theoretical basis for the determination of design parameters.
摘要：
The roundness and surface roughness are important quality performances for machined round parts. In order to get the best quality performance by less experiment search for optimum parameters, an orthogonal array was used for the experimental design, optimal machining parameters were determined by the grey relational grade obtained from the grey relational analysis, and the main machining parameters that affect the machining performance can be found by the difference between the maximum and minimum value of the grey relational grade of the machining parameters. Experimental results have shown that the roundness and surface roughness of machined round parts can be improved effectively by the proposed approach.
期刊：
Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2012,2012年23:2002-2005 ISSN：1951-6851
通讯作者：
Zhao, Xuecheng
作者机构：
[Zhao, Xuecheng] Shaoyang Vocatioonal & Tech, Mech & Elect Engn Dept, Shaoyang, Hunan, Peoples R China.;[Zhao, Yuhong] Univ South China, Inst Elect Engn, Hengyang, Peoples R China.
摘要：
A simulation system for instrument cluster based on the CANoe from Vector company is developed and used for real-time cluster test and fault analysis. Test results show that the operation condition of cluster can be simulated and the fault data from CAN bus can be collected, replayed and analyzed using this system.
摘要：
In view of the current situation of the less embedded Linux image acquisition application based on V4L2(Video for Linux Two), embedded image acquisition system based on V4L2 is designed. S3C6410 is adopted as hardware development platform and Linux as software platform. After loading the driver of CMOS camera OV9650 and other relative drivers, image acquisition applications on the basis of V4L2 is compiled, adopting double frame buffer to reduce CPU utilization rate to accomplish acquisition and preview image. With the size of 400x480 and the frame rate of 15 frames per second, the picture collected shows clearly and it has good quality. The experiment result indicates that the system has good scalability, and it offers a new idea for embedded hand-held devices.
期刊：
Chinese Control Conference,2011年:2008-2013 ISSN：1934-1768
通讯作者：
Sheng Yifa
作者机构：
[Sheng Yifa; Liu Shengxue] Univ S China, Coll Elect Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Sheng Yifa] U;Univ S China, Coll Elect Engn, Hengyang 421001, Peoples R China.
会议名称：
The 30th Chinese Control Conference(第三十届中国控制会议)
会议时间：
2011-07-01
会议地点：
烟台
会议主办单位：
[Sheng Yifa;Liu Shengxue] Univ S China, Coll Elect Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
The 30th Chinese Control Conference(第三十届中国控制会议)论文集
关键词：
Urban rail transit;Interior permanent magnet synchronous motor;Efficiency-optimization;Instantaneous power control
摘要：
Based on the analysis of relationship among the power, torque and stator flux-linkage, the efficiency optimization of the interior permanent magnet synchronous motor drive system for urban rail traction based on instantaneous power control is presented during the transiently operating process of accelerating and braking region. The goal of the method is to control reactive power as zero and improve power factor at the same output of active power. Instantaneously input active and reactive power are changed by the control of stator flux amplitude and position angle to improve the system efficiency, torque output capability, and response speed. Efficiency optimization control system is implemented using a STM32F103 embedded microcontroller. The validity of the proposed strategy is proved by the simulation and experimental results.
摘要：
In main driving speed control system of temper mill, there are many adjustable parameters , their tuning ranges are wide , the parameters robustness are bad , and it is hard to find a set of control parameters which operate system under optimal condition with traditional parameter tuning method. In order to solve these problems, this paper puts forward an optimal setting method of control parameters based on evolution algorithm. The searching method with proper coding form, adaption function and other evolutionary operator is efficient and robust. The method is applied to parameter optimization of main driving speed control system of temper mill, and the system performance characteristics such as the most overshoot, response speed and accuracy turn out to be optimal.
摘要：
A bandwidth adaptable third-order all-digital phase-locked loop (PLL) based on PI control algorithm is proposed in this paper. On the analysis of the mathematical model of analog PLL system, mathematical model for bandwidth adaptable all-digital PLL is firstly established and theoretical analysis is therefore carried out, and then the relationship between the proportional/integral parameters of the PLL and the input signal frequency is derived. And finally under the Matlab/Simulink (R) environment, system-level model for the PLL is directly constructed using DSP Builder (R), and system design is completed by using VHDL and is implemented on a FPGA based platform. Both system simulation and experimental results confirm the correctness of the design. The control parameters of this PLL change adaptively with the variation of input signal frequency, and it features with its high frequency-locking speed, wide frequency-tracking range, easy integration and broad versatility.
作者机构：
[Li, Biwen] Univ South China, Sch Nucl Sci & Technol, Hengyang, Hunan, Peoples R China.;[Zhang, Chunliang; Li, Biwen; Hu, Liangbin] Univ South China, Sch Mech Engn, Hengyang, Hunan, Peoples R China.;[Xiao, Jinfeng] Univ South China, Sch Elect Engn, Hengyang, Hunan, Peoples R China.
通讯机构：
[Li, Biwen] U;Univ South China, Sch Nucl Sci & Technol, Hengyang, Hunan, Peoples R China.
会议名称：
International Conference on Manufacturing Engineering and Automation
会议时间：
DEC 07-09, 2010
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Li, Biwen] Univ South China, Sch Nucl Sci & Technol, Hengyang, Hunan, Peoples R China.^[Li, Biwen;Zhang, Chunliang;Hu, Liangbin] Univ South China, Sch Mech Engn, Hengyang, Hunan, Peoples R China.^[Xiao, Jinfeng] Univ South China, Sch Elect Engn, Hengyang, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Error prediction;Herringbone gear;Noise reduction;Nuclear power turbine;Slotting cutter
摘要：
Relative to gear shaping and gear hob, using gear slotting produces herringbone gear which is used in nuclear power turbine speed redactor has more obvious technical and economic benefits, but profile angle error of slotting cutter causes profile error and base pitch deviation of herringbone gear. It will result in high-frequency noise which damages the tactical and technical performance of warship. By analyzed the wire cutting system of rack cutter used in MAAG type gear machining for herringbone gear, the mathematical model of error prediction for rack cutter profile angle was founded. On the base of model of error prediction, the principle of error control and the method of revision control are presented. Finally, the example of prediction and control is provided.
摘要：
The roundness and surface roughness are important quality performances for machined round parts. In order to get the best quality performance by less experiment search for optimum parameters, an orthogonal array was used for the experimental design, optimal machining parameters were determined by the grey relational grade obtained from the grey relational analysis, and the main machining parameters that affect the machining performance can be found by the difference between the maximum and minimum value of the grey relational grade of the machining parameters. Experimental results have shown that the roundness and surface roughness of machined round parts can be improved effectively by the proposed approach.
作者机构：
[Sheng Yifa; Zhou Wen-zhen] Univ South China, Coll Elect Engn, Hengyang 421001, Peoples R China.;[Sheng Yifa; Yu Shou-yi] Cent China Normal Univ, Inst Informat Sci & Engn, Changsha 410083, Peoples R China.
会议名称：
The 22nd China Control and Decision Conference(2010年中国控制与决策会议)
会议时间：
2010-05-26
会议地点：
徐州
会议主办单位：
[Sheng Yifa;Zhou Wen-zhen] Univ South China, Coll Elect Engn, Hengyang 421001, Peoples R China.^[Sheng Yifa;Yu Shou-yi] Cent China Normal Univ, Inst Informat Sci & Engn, Changsha 410083, Peoples R China.
会议论文集名称：
The 22nd China Control and Decision Conference(2010年中国控制与决策会议)论文集
关键词：
railway vehicles;interior permanent magnet synchronous motor;efficiency optimization;intelligent integrated control
摘要：
To improve the steady state efficiency of interior permanent magnet synchronous motor system(IPMSM), the intelligent integrated online optimal control strategy of IPMSM efficiency optimization was presented. The intelligent integrated control technology and torque compensation method were combined to the system. The method of adaptive fuzzy logic to adjust direct-axis current was adopted in the first half search, using the adaptive step size to reduce the torque fluctuations. The golden section search method was adopted in the next half search to speed up the search process and improve its convergence. While in the whole process, the torque correction program was introduced to compensate the torque current in real-time and resolve the torque pulsation problem in the regulation process of the excitation current. The dynamic and static performances of the system are improved. A 100kW IPMSM efficiency optimization intelligent integrated control system was implemented using a TMS320LF2407A DSP. Experimental results prove the validity of the proposed strategy.
