摘要：
本文介绍了ADO(ActiveX Data Objects)数据库编程接口的体系结构及编程方法,并以Visual C++6.0为开发环境建立一个关于医院患者登记的应用程序,选用ADO数据库访问技术,将患者信息存储在Access2003数据库中并实现了数据修改、删除、查询等常见功能.软件操作简便、访问数据库的效率高,实现了系统数据库的有效管理.
作者机构：
[饶益花] School of Electrical Engineering, University of South China, Hengyang 421001, China;[饶军; 王明伟] Southwestern Institute of Physics, Chengdu 610041, China;[陈文光] School of Electrical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Southwestern Institute of Physics, Chengdu 610041, China
通讯机构：
[Chen, W.-G.] S;School of Electrical Engineering, University of South China, China
期刊：
The 2010 IEEE International Conference on Information and Automation,2010年:588-593
作者机构：
[Jinfeng Xiao; Xueyu Gong; Yifa Sheng; Jun Chai] College of Electrical Engineering, University of South China, Hengyang, Hunan, China;[Biwen Li] College of Mechanical Engineering, University of South China, Hengyang, Hunan, China
摘要：
Model Reference Adaptive System (MRAS) represents one of the most attractive and popular solutions for sensorless control of induction motor drives. However, the performance of this scheme deteriorates at low speed. A new method is described which considerably improves the performance of MRAS-based sensorless drives in low speed regions of operation. It is applied to a vector-controlled induction motor drive. This new technique uses Radius Basis Function Neural Network (RBFNN) to entirely replace the conventional Proptional- intergral (PI) adaptation mechanism of classical hybrid reactive power MRAS speed estimator. The simulation results show great improvement in the speed estimation performance at low speed.
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.
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.
