牵引系统

• According to the speed control principle of the traction system of maglev train , this paper introduces the train locating system of shanghai maglev train demonstration line and the way to determine the speed when the train runs at high or low speed
  摘要根据磁浮列车牵引系统的速度控制原理，介绍上海磁浮列车示范线的列车定位系统，以及列车在高低速运行时速度的确定等内容。
• Railway applications - fixed installations - particular requirements for a . c . switchgear - measurement , control and protection devices for specific use in a . c . traction systems - single - phase inductive voltage transformers - single - phase voltage transformers
  铁路设施.固定装置.交流电开关的专门要求.交流牵引系统特殊使用的测量控制和保护装置.单相感应电压变压器.单相电压变压器
• Through calculating and analyzing basic performance , the flight characteristic of the towed system is researched . stability and control issue of carrier rocket is discussed primarily . the net result of the thesis will prove the feasibility of the scheme of towed launch
  论文通过牵引系统基本性能的计算和分析，完成牵引飞行特性的研究，同时对运载器的稳定性和控制问题进行初步的探讨，最终结果将验证牵引发射方案的可行性。
• Company development and production of products mainly include : industrial control and monitoring , dc converter , exchange converter , permanent magnet motor , power generation electronic control system , various industrial control module , railway traction systems and urban transport systems
  公司研发及生产的产品主要有：工业控制及监测、直流变流器、交流变流器、永磁电机、电力发电电控系统、各种工业控制模块、铁路牵引系统和城市交通系统等。
• In order to study the vibration in the artillery traveling more accurately and completely , a tire force model of non - linear and self - adapting stochastic contacting mark is set up , and this model provides a good method to study the driving system ' s horizontal and vertical excitation caused by the plainness road surface . the suspension of the tractor is simplified by the model of spring - damp system , and the artillery torque rod is also simplified by torsion spring
  为了更准确和全面地研究火炮牵引行驶过程中出现的振动，建立了非线性自适应随机接地印迹的轮胎力学模型，该模型能很好地研究路面不平度对火炮牵引系统的垂直和纵向激励；牵引车悬架简化为弹簧阻尼系统；火炮扭转杆简化为扭簧。
• Based on the facts in our country , this paper raised that the method of probability should be used in electrical tractor system . and at the same time , the main problems and availableln of this method . based on matlab , the model of probabilistic method and monte carlo simulation in superposition multi - harmonics sources are compared
  与此同时，探讨了目前国内外对该问题处理所使用的方法的局限性和缺陷，针对本国的电牵引系统的实际情况，提出了在电牵引系统的多谐波叠加中使用基于中心极限定理的概率分析方法，指出针对高次谐波运用该方法的可靠性和对低次谐波不能有效模拟的原因所在。
• The pictures of probabilistic characteristic in both sides of impendence matching balance transformers are drawn , and probabilistic density figures are also given . the simulation model of shaoshan 4 electrical tractor is raised , at the same time facing the restriction of probabilistic method , the paper raised that using monte carlo simulation absorbed harmonics currents of the model of electrical tractor and simulated the superposition of low harmonics currents . through compared with real time data , the monte carlo simulation can be confirmed , and the breakthrough point of restriction of using probabilistic method is discussed
  为了有效模拟机车在运行中所产生的谐波电流，本文在matlab的平台空间中建立了韶山4型电力机车的仿真模型，导入到matlab运算程序中，对低次谐波电流叠加进行模拟，从而证实了蒙特卡罗模拟法仍然是目前较为可靠可行的方法，同时讨论了在电牵引系统中针对低次多谐波源叠加使用基于中心极限定理的概率分析方法必须使用相关参数进行修正，即需要和电力机车的带电运行方式有机的结合在一起。
• Have put forward the schemes of five kinds of setting - up models by analysis to towed flight , concrete course and basic theories of scheme carry on the simple narration on each , compare their pluses and minuses . combine with study the purpose , the suitable method towed systematic modeling way is chosen
  通过对牵引飞行过程的分析，提出了五种建立模型的方案，就每种方案的基本理论以及建模过程进行简单的叙述，对它们的优缺点进行比较，结合研究目的选择出适合的方法作为牵引系统的建模方式。