查询词典 designed
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The mold was designed by the Mission directions, through the analysis, in the technical requirement of vase tops. The designed included: vase tops sample selection of material and injection machine, indication of the mold cavity number, selection of The branch mould, equipment of mold cavity, pouring system, structure and style of drawing of patterns ,cooling system, structure and admittedly fix of hollow and Standard, style of exhaust.
此次课程设计通过对点滴瓶瓶塞的生产技术要求的分析,以模具设计任务书为依据设计模具,设计包括熟悉瓶塞图样,材料的选用,注塑机的选择,型腔数目的确定,分型面的选择,型腔的配置,浇注系统,脱模方式,冷却系统和脱模机构,凹模和型芯的结构和固定方式,排气方式等。
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Around the topic, the weak points of the traditional platform is analyzed first, such as complex arithmetic, long calculating time, high needs of hardware and so on. A real time control method based on virtual simulation is suggested to separate the complex positive/negative calculation of space kinematic and real time motion control. And a"3-2-1"type 6DOF platform is designed with the reference of the MAST (Multi-Axis Shaking Table) of MTS. The kinematic and dynamic calculation of the platform is finished. According to the calculating result, the control system of the"3-2-1"type 6DOF platform including 6 linear servo electric cylinders is designed and constructed. And the professional software Pro/E is used to do the 3D model and 6DOF motion simulation of the platform. The motion curves of the pistons of the 6 cylinders are exported with the simulation. At last the control software is programmed with Microsoft Visual Basic 6.0 and realizes the functions with the commands of GE series motion controllers. When loading the motion curves exported with the simulation, every cylinder can follow the curve very well and the platform realizes the hoped 6DOF motion.
围绕选题,本论文首先分析了传统的运动平台控制方法所存在的算法复杂、解算耗时长、硬件需求高的缺点,提出了一种基于虚拟仿真的实时控制方法,该方法将复杂的空间运动学正、反解与实时运动控制相分离;之后,参考MTS公司的MAST多轴振动平台,设计了新型的"3-2-1"型六自由度平台,并进行了运动学及动力学计算,根据相关计算结果,设计与搭建了包括驱动6个直线伺服电动缸在内的"3-2-1"型六自由度平台控制系统;接着,使用Pro/E对"3-2-1"型六自由度平台进行了三维建模和六自由度运动学仿真,并由仿真直接获得了6个直线伺服电动缸的活塞杆的相应运动曲线;最后使用Microsoft Visual Basic 6.0编写了控制软件界面,通过调用GE系列运动控制卡的各种命令函数实现了控制系统的相关功能,而当加载仿真得到的各缸运动曲线后,每缸均能很好地跟踪输入曲线,使平台实现了期望的多自由度运动。
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This thesis focus on GPS application in magnetic suspension engineering:① the formulation of oblique cylindrical projection is worked out according to characteristics of long distance precise engineering and map projection theory. The author has developed an application to accomplish coordinate conversion from generally used coordinate systems to oblique Maglev Coordinates System.② considering not only project peculiarities but also position of control points, selection of initial points, connection type, selection of repeat baseline and ground observed quantities, GPS network is designed on electronic map and we may extract GPS network information by program developed using Visual Basic 6.0 while the results are stored in control point file and baseline vector file.③estimate accuracy of various GPS networks designed on electronic map by method of 2D restriction adjustment. GPS network simulation design and accuracy estimate come true.④Predominate the rules how connection type , repeat baseline and precise baseline of range finder influence GPS network precision through comparing accuracy of various GPS network. Thereby, the solution how to establish GPS network in long distance precise engineering is figured out.
本论文主要研究GPS技术在磁悬浮工程中的应用:①根据长距离精密工程的特点,从地图投影原理出发,推导出斜轴圆柱投影的应用公式,并编制计算软件,实现从常用坐标系统向斜轴磁悬浮坐标系统的转换计算;②在AutoCAD电子地图上,根据工程的需要,并充分考虑控制点的点位、起算点的选择、连接方式、重复基线的选择和地面观测量的选择等因素,在电子地图上进行GPS网的设计,根据Visual Basic 6.0语言编程,提取出GPS网资料,保存在控制点文件和基线向量文件中;③对在电子地图生成的各种类型的GPS网进行二维约束平差的精度估算,实现了GPS网的模拟设计与精度估算;④通过对各种控制网的精度比较,掌握连接方式、重复基线、精密测距仪基线对GPS网精度影响的规律,解决了长距离精密工程GPS网的建立方法。
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Ultimately,on the designed experimentative platform of the vector control system,we performed the motor experiment of off-load and on-load under different frequencies,at the same time we analyze the results and validate the feasibility of the system designed scheme.
最后,在所设计的矢量控制调速系统实验平台上,进行了电机在不同频率下的空载和带负载的实验,并对实验结果进行了分析,验证了系统设计方案的可行性。
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Simulation results show that the performance of the open-loop control system is poor when the model parameters change. The second system is designed via feedback linearization method. Since the path signal is introduced as feedback signal, the designed closed-loop control system improves the system robustness to the parameter perturbation. Simulation results verify that the closed-loop control system shows better performance than the time optimal control system.
前者侧重于时间最短的控制性能,但由于是开环控制,当出现参数摄动时,系统的性能会受到较大影响;后者由于引入了飞艇轨迹的反馈信号,因而相对提高了系统对参数摄动的鲁棒性,计算量较小,并且仿真结果证实了这种闭环系统设计方案可以抑制参数摄动带来的影响,与时间最优开环控制系统相比,显著提高了控制精度、改善了控制效果。
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To some problems of it, the design train of thought that only A/D, subdivision and counting circuit compose open-loop control system is proposed in this paper. It thoroughly renovates traditional design train of thought; Integrated subdivision circuit on the basis of AD2S90 and QA740210 is proposed and designed; Digital readout system has simple PLC function and realizes communication between it and PC; Advanced LCD technology is adopted; Using software error amendment realize dynamic compensation for error; Intelligence digital readout system by inductosyn having high accuracy and multifunction is designed.
针对目前感应同步器数显表存在的一些问题,本论文研究中提出了仅有A/D转换、细分和计数电路组成的开环控制系统的设计思路,彻底革新了传统的设计思路;提出并设计了基于AD2S90和QA740210的集成化细分电路;使数显表具有了简易PLC的功能,实现了上位机PC和数显表之间的通讯;采用了先进的LCD液晶显示技术;利用软件误差修正方法可以实现对误差的动态补偿;开发设计了精度高、功能多的智能数字化感应同步器数显表。
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Grab instant download access to brand new, one of a kind, professionally designed and custom designed graphics, buttons, oto templates, and testimonial templates.
抓斗即时下载获得全新的,一个一类,专业设计和定制设计的图形,按钮,耳模板和鉴定模板。
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On the basis of the instrumentation to study intact-receptor based on maxillary palp of cockroach Periplaneta Americana, a thermoplate was designed for constant temperature control during the experiment and a new electrode holder was also designed for improving reproducibility.
依响应频率将氨基酸分成了三类:响应频率最高的第一类为天冬氨酸、谷氨酸、甘氨酸和脯氨酸,其次为第二类包括组氨酸、精氨酸和苯丙氨酸,第三类为没有响应信号的包括丙氨酸、色氨酸、酪氨酸和苏氨酸等。
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A set of integrated compensation programs is designed based on phase errors above mentioned.A digital integral circuit with ADE 7759 is designed for com-pensating the led phase;a phase-shifted software algorithm realized in the merging unit DSP is introduced for compensating the time-delay.
针对这2种原因产生的相位误差设计出了一套完整的补偿方法,由于Rogowski线圈产生的相位超前,设计了一种采用ADE 7759芯片的数字积分电路,可基本还原线圈引起的超前相位;由于传输过程中产生的延时,介绍了一种移相用软件算法,可对延时进行有效补偿。
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This room was designed for the children/ designed as a children's playroom.
这个房间预定留给孩子们用;留作孩子们的游戏室。
- 相关中文对照歌词
- Designed To Kill
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力