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严重落后于行业水平 《电冰箱用全封闭型电动机-压缩机》国家标准修订工作启动
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作者 陈莉 《电器》 2007年第6期12-13,共2页
5月12日,由全国家用电器标准化技术委员会主办、由加西贝拉压缩机有限公司承办的《电冰箱用全封闭型电动机-压缩机》国家标准修订工作启动会在浙江嘉兴举行。这意味着已经执行10年之久,早已严重落后于行业目前水平的冰箱压缩机标准即... 5月12日,由全国家用电器标准化技术委员会主办、由加西贝拉压缩机有限公司承办的《电冰箱用全封闭型电动机-压缩机》国家标准修订工作启动会在浙江嘉兴举行。这意味着已经执行10年之久,早已严重落后于行业目前水平的冰箱压缩机标准即将“旧貌”换“新颜”。 展开更多
关键词 加西贝拉压缩机有限公司 冰箱压缩机 国家标准 修订工作 全封闭型 电动机行业
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浅议行业研究的框架 被引量:2
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作者 黄啸 《市场研究》 2005年第4期24-25,共2页
关键词 行业研究 框架 2004年 电动机行业 调查研究 大型企业 项目小组 事业部 征信 国内
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中国高效电动机市场现状及其展望
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作者 周胜 赵凯 《中国科技成果》 2002年第23期20-23,共4页
电动机作为风机、水泵、压缩机、机床等各种设备的动力,被广泛应用于工业、商业、国防、公用设施等各个领域.电动机的用电量在世界各国的总用电量中都占有相当大的比重.在中国,电动机的用电量已经占到社会总用电量的60%以上.生产和使用... 电动机作为风机、水泵、压缩机、机床等各种设备的动力,被广泛应用于工业、商业、国防、公用设施等各个领域.电动机的用电量在世界各国的总用电量中都占有相当大的比重.在中国,电动机的用电量已经占到社会总用电量的60%以上.生产和使用高效率电动机,不仅给使用者达到节约电能的目的,还能提升电机制造商的市场竞争力,可谓一举多得. 展开更多
关键词 中国 现状 电动机行业 市场分析 发展
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GE为其电动机制造部门寻找买主
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《环球市场信息导报》 2003年第5期55-55,共1页
关键词 通用电气公司 电动机行业 经营管理 商务谈判
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A pin-moment model of flexoelectric actuators
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作者 Zhiguo Wang Zhengqiu Xie Wenbin Huang 《International Journal of Hydromechatronics》 2018年第1期72-90,共19页
Owning to the unique property of generating pure bending deformation, flexoelectric curvature actuators hold promise for various future applications, especially in the micro and nano scales. This paper proposes three ... Owning to the unique property of generating pure bending deformation, flexoelectric curvature actuators hold promise for various future applications, especially in the micro and nano scales. This paper proposes three models to predict the deformation of one-dimensional isotropic beams under the excitation of flexoelectric curvature actuators, including the pin-moment model, the pin-force-moment model and Euler-Bernoulli model. The pin-moment model represents the simplest model by only considering the moments interaction between the actuators and the beam at both ends, while the pin-force-moment model incorporate both the force and moment interactions. Comparison between the results of these two models with the Euler-Bernoulli model results indicates that the pin-moment model overestimates the curvature of the beam under a small thickness ratio of the beam and actuator, whereas a good agreement is reached between the pin-force-moment model results with that obtained by the Euler-Bernoulli-model. The accuracy of the pin-force-moment model and the Euler-Bernoulli model was further verified by a finite-element analysis. Therefore the pin-force-moment model could provide a simple and accurate method to characterise the performance of flexoelectric curvature actuators, enlightening the implementation of them for numerous future applications. 展开更多
关键词 FLEXOELECTRICITY ACTUATOR shear lag.
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Autonomous energy efficient wheel loader research at TUT
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作者 Kalevi Huhtala 《International Journal of Hydromechatronics》 2018年第1期107-125,共19页
Future worksites will be occupied by different level of automation work machines. How these machines are working individually and how a fleet of these machines cooperates will be in focus of research and development w... Future worksites will be occupied by different level of automation work machines. How these machines are working individually and how a fleet of these machines cooperates will be in focus of research and development work in the future. In this paper the studied off-road vehicle is a wheel loader. It can be controlled manually, remotely or autonomously. The control strategy of autonomous wheel loader is consisting of, e.g., static and dynamic mapping, path planning, obstacle observation and avoidance. In the autonomous machines and also in machines where operator assistance system is active the situational awareness is the key research field. Power management in hydraulic work machines are still active fields of research. Multiple architectures and configurations have been suggested concerning this area. In addition, implemented solutions that consider an entire machine are rarely presented. This paper introduces the research work of the control systems which are minimising the fuel consumption. 展开更多
关键词 energy efficiency autonomous machines hydrostatic drives HSDs mathematical modelling PATH-PLANNING digital hydraulics.
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Real-time implementation of Kalman filter for unsteady flow measurement in a pipe
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作者 Kazushi Sanada 《International Journal of Hydromechatronics》 2018年第1期3-15,共13页
A Kalman filter which estimates unsteady laminar flow in a pipe is implemented on a real-time computing system. The plant model is the optimised finite element model of pipeline dynamics considering unsteady laminar f... A Kalman filter which estimates unsteady laminar flow in a pipe is implemented on a real-time computing system. The plant model is the optimised finite element model of pipeline dynamics considering unsteady laminar friction. A steady-state Kalman filter is built based on the model of pipeline dynamics. Pressure signals at both ends of a target section of a pipe are input to the model of pipeline dynamics, and as an output of the model an estimated pressure signal at a mid-point of the pipe is obtained. Difference between measured and estimated pressure signals at the mid-point is fed back to the model of pipeline dynamics to modify state variables of the model. According to the Kalman filter principle, the state variables of the model are adjusted so that they converge to real values. It is demonstrated that real-time implementation of the Kalman filter is possible with the sampling time of 0.1 ms. 展开更多
关键词 flow measurement unsteady flow flow rate POWER Kalman filter optimised finite element model pipeline dynamics real-time implementation PIPE hydromechatronics.
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