共查询到18条相似文献,搜索用时 125 毫秒
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通过电子设备多学科主模型相关技术研究,归纳了电子设备多学科主模型概念及其特点,明确了综合化电子设备多学科综合优化模型组成,提出了两种基于多学科主模型技术的综合优化模型建立技术及其实现途径,为多学科优化设计技术研究和电子设备多学科优化设计平台开发奠定了技术基础. 相似文献
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针对防空武器平台仿真系统快速、高效建模需求,从多学科领域功能模型划分角度出发研究其仿真系统建模技术,建立了合理的领域功能模型划分框架及自底向上的系统多层建模结构;在此基础上结合多粒度参数化建模技术研究了通用领域功能模型建立方法。最后通过对某典型防空武器平台仿真系统的建模验证了该建模技术的有效性和可行性。 相似文献
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指出多学科设计优化技术在机器人复杂系统设计方面的优势,探索了将其和机器人系统设计相融合的流程方法。利用多学科优化技术对移动读书机器人机械臂系统进行分解和规划,同时阐明了其中的难点和关键技术。将其分解为运动学、静力学、动力学、控制学四个学科并建立相应的模型进行分布式并行设计,优化计算结果表明了多学科设计优化技术应用在机器人设计领域的可行性及有效性。 相似文献
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磁浮列车是一种新型的轨道交通工具,与直线传动的城轨车辆相同,都是用直线电机驱动。磁浮列车的磁浮系统分为吸力型和推斥型,直线牵引也分为同步型和异步型,它们均使用变频器来供电和实现速度控制。本文就使用变频器控制的不同型式的直线电机在磁浮列车上应用的特点,作了概要地介绍。 相似文献
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指出多学科设计优化技术在机器人复杂系统设计方面的优势,探索了将其和机器人系统设计相融合的流程方法。利用多学科优化技术对移动读书机器人机械臂系统进行分解和规划,同时阐明了其中的难点和关键技术。将其分解为运动学、静力学、动力学、控制学四个学科并建立相应的模型进行分布式并行设计,优化计算结果表明了多学科设计优化技术应用在机器人设计领域的可行性及有效性。 相似文献
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自动化的磁悬浮列车可以在极短的时间内正常运行,而且具有极高的速度和能量利用率,其中一个关键技术就是对列车的悬浮高度进行控制。文中研究了磁悬浮列车高度控制的动态数学模型,拟定了磁悬浮列车高度的控制方法,采用数字控制技术进行设计,在满足系统稳定的前提条件下提高系统的快速反应能力,并对高度控制进行了实验仿真。实验结果表明,系统具有良好的性能,在规定的稳定时间内超调量小,证明了上述方案正确、可行。 相似文献
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Faster than a speeding bullet train 总被引:1,自引:0,他引:1
《Spectrum, IEEE》2003,40(8):30-34
China is throttling up a 430-km/h magnetically levitated train to link Shanghai and its airport. Built in China by a trio of German companies and the Shanghai Maglev Transportation Development Co., it reaches 430 km/h (268 mi/h)-130 km/h faster than Japan's famous bullet train. And even as it goes faster than any commercial vehicle without wings, the Chinese train is smoother and quieter than Amtrak's wheel-on-rail Acela-the state of the art in the United States-which pokes along when it can at a maximum 240 km/h. After many false starts and the completion of full-scale experimental maglev systems in Japan and Germany in the 1980s, maglev in China will finally start shuffling passengers in October in a reasonably large-scale, commercial system. The trains will run from downtown Shanghai's financial district to Pudong International Airport, making a 9-minute run that will shave about 40 minutes off the typical trip time in a taxi. With three five-car trains, each carrying as many as 574 passengers, and trains leaving every 10 minutes, the US $1.2 billion system could carry more than 10 million passengers a year. 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》2009,97(11):1886-1891
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"电力电子技术"是控制、机电和电气等学科的一门专业基础课。它涉及控制理论、控制系统、电路学、器件学和能量载体等教学内容,知识面广,与工程实际结合十分紧密。针对传统案例教学中,案例工程背景分散,不具典型性,本文提出了采用磁浮列车供电系统作为综合性工程案例平台,探讨了该平台与"电力电子技术"课程的关系,以及在该课程教学中的综合应用。 相似文献
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《Mechatronics》2017
Magnetic levitation technology has become the great candidate to provide ultraprecision motion in vacuum environment due to its characteristics, e.g., non-contact, frictionless, and unlimited stroke, etc. This paper presents the design, modeling, analysis, and control of a 6 Degrees-Of-Freedom (DOF) maglev positioning system, and the proposed system is able to achieve a planar motion of 50 mm × 50 mm while the levitation height is up to 4 mm. In this work, the model of eddy current damping for moving Halbach Permanent Magnet (PM) array is analytically established to predict the damping force in operating of the maglev positioning system. Furthermore, the magnetic field end-effect is analyzed in the maglev system, where two guidelines are provided to ideally avoid the model error due to end-effect during the design of the maglev system. To control the maglev positioning system to achieve good planar tracking performance, the system identification is carried out for x and y-axes, and a simple PID controller is designed and optimized according to the specifications characterizing on the closed-loop performance of the maglev system. Finally, the experiments are conducted on the maglev prototype to demonstrate the positioning performance, and the results show that the maximal static positioning error is less than 200 nm with the Root Mean Square Error (RMSE) around 60 nm. 相似文献