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4041.欧洲标准负载实施情况下基于遗传算法的钢结构的优化问题
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper presents an implementation of Eurocode load cases for discrete global optimi-zation algorithm for planar structures based on the principles of finite element methods and genetic algorithms.The final optimal design is obtained using IPE sections chosen as feasible by the algorithm,from the available steel sections from industry.The algorithm is tested on an asymmetric planar steel frame with promising results.
关键词：钢铁；优化；遗传算法；欧洲标准
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4042.钢铁热处理过程中氢气浓度在线测量系统的设计
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper describes a hydrogen content on-line measurement system in the process of steel heat treatment based on the theory of hydrogen concentration cell.This System design includes two main measurement units and a MCU for calculation and output.The method of measurement data processing is discussed in this paper,and an algorithm of temperature value calibration is also proposed.Final test shows that the instrument has features of portability,continuity and real time capability,which make it has a potential future in the hydrogen content measurement in metallurgical enterprises.
关键词：钢铁；氢气浓度测量；温度标定；分段函数近似算法
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4043.用于输电线上检测机器人充电的无线电力传输系统
[电气机械和器材制造业] [2014-03-26]
In order to prolong continuous working time of the mobile robot to inspect on transmission lines,a robotic power management system is introduced in this paper based on the wireless power transmission technology.Magnetic resonance coupled WPT (wireless power transmission) unit is applied and its performance is analyzed in form of electrical circuit mode method.By modeling the output power of WPT unit,the relationship between coupled coefficient,angular frequency and amount of output power is given,and furthermore the energy consumption of each unit in power management system is quantified.Experiment results verified the validity of the circuit model of WPT and showed that the system could work conveniently in wireless way to provide power for the inspection robot.
关键词：光机电；机器人；无线电力传输；再加系数；Q因数
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4044.中国信息技术报告
[信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业] [2014-03-26]
The report includes the following aspects: News and commentary,Media releases, Latest research, The industry, Leading companies in the industry.
关键词：信息技术；软件；SaaS；网络；媒体发布；通信卫星；遥感
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4045.以触觉为基础的机器人的遥控作业：与真实环境的交互
[电气机械和器材制造业] [2014-03-26]
Robot teleoperation via haptic interface has been increasingly studied in recent years. In fact, the capacity to remotely feel the forces being exerted on a robot end-effector is a major advantage for many modern robot applications. This study aims to explore the capabilities of a low-cost haptic device, a force/torque sensor and a commercially available industrial robot, both together for haptic-based robot teleoperation purposes. A ballistic approach is implemented to make the mapping between the motion produced on the haptic device by the operator and the resulting robot motion. Inspired by some studies in the field of robot haptics, the robot and haptic device are connected by a virtual spring, which allows the operator to feel the sensation of pull and push the robot at the same time that teleoperates it. Results related to the process of robot teleoperation and contact with different objects are analyzed and discussed.
关键词：光机电；机器人；遥控；交互
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4046.20CrMo合金钢热变形中动态再结晶行为的研究
[黑色金属冶炼和压延加工业] [2014-03-26]
Hot compression deformation test were conducted on 20CrMo alloy steel on a Gleeble-1500D thermal simulator when the deformation amount was 30％,temperature ranged from 1273 to 1373K and strain rate from 0.0015 to 0.015s-1.Flow stress curves were obtained under different deformation conditions; DRX activation energy was calculated using mathematical method.The starting time of DRX was analyzed and the kinetic equation of DRX was established.This model fits well with test data and can meet the requirement of engineering calculation.
关键词：钢铁；动态再结晶；热变形；连铸连轧
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4047.聚能装药射流穿透钢靶的三维数值模拟
[黑色金属冶炼和压延加工业] [2014-03-26]
In this paper,adopted explicit dynamic analyzing program AUTODYN basing on finite element to simulate the process of the shaped charge jet formation and the penetration through the steel target,base on the characteristic of the shaped charge structure and the mechanisms of jet penetrating the target.
关键词：钢铁；聚能装药；数值模拟
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4048.激光刻划对晶粒取向硅的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
Laser scribing is widely used to reduce core loss of grain-oriemed silicon steel recently.The effects of laser scribing on surface coating and magnetic properties of silicon steel were investigated in this paper.The effect of stress annealing treatment on laser scribing product has been analyzed.It was found that as laser power increased,the core loss reduced and the damage to surface coating exacerbated.Reducing the laser scribing line spacing to a certain width can achieve low core loss.The core loss of laser domain refined product will increase after annealing at certain temperature.
关键词：钢铁；晶粒取向硅；激光刻划；涂层
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4049.长期议题（2012）：农民的选择与生物燃料的未来
[农、林、牧、渔业,电力、热力、燃气及水生产和供应业] [2014-03-26]
This paper focuses on the patterns of farmers choices regarding dedicated perennial lignocellulosic energy crops. Throughout this paper we use the term perennial as shorthand for warm season grasses such as those in the genus Panicum or Miscanthus, or short rotation tree crops such as those in the genus Populus or Salix. We focus on choices about these perennial crops because two thirds of the mandated advanced biofuels are expected to be converted at biorefineries from perennials (USDA 2010). RFS2 establishes the goals, but not mechanisms for achieving them. Mechanisms and incentives, however, are embedded in other legislation and programs.
关键词：生物质能；生物能源；农业分析；农民；土地利用
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4050.机器人与环境的交互
[电气机械和器材制造业] [2014-03-26]
关键词：光机电；机器人；环境；交互
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