共查询到19条相似文献,搜索用时 46 毫秒
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流体传动及控制技术的新成就 总被引:7,自引:2,他引:5
流体传动及控制技术的新成就(杭州流体传动及控制国际会议介绍)葛宜远第四届杭州流体传动及控制国际学术讨论会于1997年9月9日至11日在浙江大学举行。会议论文集收录了来自我国及欧、美、日等14个国家的论文111篇,分基础研究、液压元件及系统、控制技术... 相似文献
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可控制流体——流体传动介质的突破 总被引:1,自引:0,他引:1
可控制流体是一种具有挑战性的新型材料,它的应用将可能在某些行业引起一场重大变革。本文介绍了可控制流体的原理、种类、特点及研究现状,展示了其广阔的应用前景。 相似文献
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对流体传动与控制技术的系统哲学思考 总被引:8,自引:1,他引:8
在文章里作者展示了对流体传动与控制技术的系统哲学思考。在分析了流体介质的物理基础,一般工程系统中传动与控制技术的功能定位,并在流体传动与控制技术的主要技术特性的基础上描述了明确的应用领域和技术特征。同时还预测了技术的发展趋势。 相似文献
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分析了目前液压技术的市场发展方向,从该公司液压元件设计、机加工、热处理、元件检测等方面分析了目前液压技术发展的难点,并提出了解决这些难点所采取的方法和手段,介绍了该公司液压元件检测中心的检测设备,展望了中国流体传动与控制发展的前景。 相似文献
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文章概述了德国亚琛工大流体传动与控制的三本教材:液压,流体技术的可移动应用,流体技术中的控制技术与微机应用。 相似文献
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《流体传动及控制》是机械类本科生必修课程,结合国家对于本科教育工程化的要求,对该课程的教学方法改进进行了探讨与研究。分析了该课程的教学现状,明确了课程的改革需求,重点围绕培养学生的工程能力、工程意识和工程素质,通过引入工程化教学理念和教学模式、改变课程教学体系和教学内容、建立基于虚拟环境的液压试验教学系统、完善现有的课程评价体系、建立工程化教学运行体系,改进该课程的教学方法。 相似文献
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机械传动科学技术的发展历史与研究进展 总被引:6,自引:0,他引:6
回顾了机械传动科学技术的发展历史,论述了机械传动科学技术研究的新进展。认为:信息与控制技术、能源与环境保护技术、新材料技术、先进制造技术等21世纪最重要领域的科学技术的迅速发展,对机械传动科学技术的发展将产生重要的推动作用。 相似文献
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DUAN Zhenyun School of Mechanical Engineering Shenyang University of Technology Shenyang China CHEN Houjun LIU Jian School of Mechanical Engineering Dalian University of Technology Dalian China 《机械工程学报(英文版)》2006,19(4):600-604
Bertrand surface is presented by abstracting and subliming the common characteristic of the usual surfaces including rotational surfaces, developable surfaces, normal circular-arc surfaces, etc. Basic characteristic of Bertrand surface is that normals along generator are coplanar. Bertrand conjugate principle is studied and its basic characteristic is that the instantaneous contact line between a pair of Bertrand conjugate surfaces is generator. Bertrand conjugate can be divided into three kinds of typical conjugation forms in terms of the generators that are general plane curve, circular-arc and straight line. Basic conjugate condition is given respectively, and structure condition, which reflects transmission forms and directrix characteristic of this kind of conjugation, is researched. As typical engineering application of Bertrand conjugate surface principle, transmission technology of loxodromic-type normal circular-arc bevel gear is studied. 相似文献
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一种新型的用于防止输电线路驰振的阻尼器 总被引:1,自引:0,他引:1
一种利用陀蛇力学原理设计的,可用于防止悬空输电线驰振的新型阻尼器已由作者提出,并获得中国国家专利。文中阐明了该种阻尼器的理论依据及模型试验的结果。试验结果表明该型阻尼器具有工程应用前景。 相似文献
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工业用带式烧结机的星轮和台车的传动为齿轮一销齿条啮合传动。针对台车在运行过程中的起拱和速度波动等缺陷,对带式烧结机传动过程中星轮和台车相互之间的力学关系进行了分析。根据分析结果,给出了台车不起拱的系统力学模型,提出了新型无起拱平稳传动带式烧结机的力控制方法。采用该力学模型和力控制方法,结合工业实例,进行了解析计算和基于虚拟样机的运动仿真,计算和仿真的结果基本相符。由此得到了带式烧结机力控制阈值和力控制曲线。考虑力控制方法所设计的新型带式烧结机己经投入实际生产,应用效果表明所建立的模型理论正确、计算和仿真可靠、力控制方法有效。研究结果可以为今后带式烧结机的工程设计和应用提供理论依据。 相似文献
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简述了控齿轮传动技术发展阶段及其特征,指出齿轮技术是具有明显产品特征的共性基础技术。对近10多年国际齿轮技术的进展和我国齿轮工业的发展历程、现状及其与国际先进水平的差距作一综合评述,并展望了跨世纪时期的齿轮技术。 相似文献
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POWER FLOW ANALYSIS AND APPLICATION SIMULATION OF ELECTROMAGNETIC CONTINUOUSLY VARIABLE TRANSMISSION 总被引:2,自引:0,他引:2
LUO Yutao TAN Di MENG Fanzhen 《机械工程学报(英文版)》2008,21(6):48-56
With the structure of two air gaps and two rotors, the electromagnetic continuously variable transmission(EMCVT) is a novel power-split continuously variable transmission(CVT). There are two kinds of power flowing through the EMCVT, one is mechanical power and the other is electric power. In the mean time, there are three power ports in the EMCVT, one is the outer rotor named mechanical power port and the other two are the inner rotor and the stator named electric power ports. The mechanical power port is connected to the driving wheels through the final gear and the electric ports are connected to the batteries through the transducers. The two kinds of power are coupled on the outer rotor of the EMCVT. The EMCVT can be equipped on the conventional vehicle being regarded as the CVT and it also can be equipped on the hybrid electric vehicle(HEV) as the multi-energy sources assembly. The power flows of these two kinds of applications are analysed. The back electromotive force(EMF) equations are illatively studied and so the dynamic mathematic model is theorized. In order to certify the feasibility of the above theories, three simulations are carried out in allusion to the above two kinds of mentioned applications of the EMCVT and a five speed automatic transmission(AT) vehicle. The simulation results illustrate that the efficiency of the EMCVT vehicles is higher than that of the AT vehicle owed to the optimized operation area of the engine. Hence the fuel consumption of the EMCVT vehicles is knock-down. 相似文献
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ZHANG Hongyan ZHAO Dingxuan TANG Xinxing Ding Chunfeng 《机械工程学报(英文版)》2008,21(1):20-24
From the viewpoint of energy saving and improving transmission efficiency, the ZL50E wheel loader is taken as the study object. And the system model is analyzed based on the transmission system of the construction vehicle. A new four-parameter shift schedule is presented, which can keep the torque converter working in the high efficiency area. The control algorithm based on the Elman recursive neural network is applied, and four-parameter control system is developed which is based on industrial computer. The system is used to collect data accurately and control 4D180 power-shift gearbox of ZL50E wheel loader shift timely. An experiment is done on automatic transmission test-bed, and the result indicates that the control system could reliably and safely work and improve the efficiency of hydraulic torque converter. Four-parameter shift strategy that takes into account the power consuming of the working pump has important operating significance and reflects the actual working status of construction vehicle. 相似文献
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本文介绍了液力机械变速箱耐久性试验台计算机自动控制与数据采集系统及其主要性能;推证了J.I.Soliman提出的柴油机的数学模型,导出了这种数学模型的模型参数的数学表达式;建立了较高精度的液力变矩器工程实用数学模型。设计的具有模型参数自适应补偿的计算机控制系统能实时地适应试验台工况的变化,自动整定其模型参数,使其转速调节过程仍然具有较好的静、动态指标。现场实测结果表明研制的计算机控制系统是成功的。 相似文献