SB series centrifuge is my vast number of users in accordance with GMP norms designed to transform the entire confined centrifuges by the variable frequency motor control a smooth start, through the transmission drive drum rotating around its axis to form the main centrifugal force field.
SB型系列离心机是我公司根据广大用户进行GMP规范改造而设计的全密闭离心机，电机由变频控制平稳启动，通过传动系统带动转鼓绕其主轴线旋转形成离心力场。
As a direct driving motor, it is becoming a hotspot in the field of mechanical and electrical control.
本文针对超声波电机驱动控制系统的实现做了进一步的研究和设计。
Next, the finite element model of induction motor is established by using Maxwell 2D transient module, and the inverter control circuit is also designed by its own circuit design editor. Consequently, a complete field-circuit coupled simulation model of inverter control system is presented.
接下来，利用Ansoft公司的Maxwell 2D瞬态模块建立了异步电动机的有限元模型，并且采用其自带的电路编辑器Schematic Capture设计了异步电机逆变器控制电路，构建了一个完整的变频控制系统场路耦合仿真模型。
The mathematical model of the whole system, together with the digital controller, lays the basis of the study and the dynamic simulation. 2. According to the fundamental requirements and contrivance of the traveling system of the paver, it is the first in our country to design the digital controller of traveling system based on single chip microcomputer. By introducing fuzzy PID control strategy into the controller design and using MATLAB, the paper has made a system simulation model, simulated the dynamic characteristic and got the dynamic respondence of motor turning speed output. The results prove that fuzzy-adjustable-PID control strategy is superior to traditional PID control. It involves the merits of fuzzy control and PID control, so the static characteristics and dynamic characteristic of the system are better. The results of laboratory simulation test and field experiment have shown that the control strategy and methods of the traveling system of paver are practicable. The function of the designed digital controller is so stable that it can meet the needs of the paver's traveling and attain the expected objective, which is the main research achievement of the paper. The paper has also studied experimentally on the non-shock minimum ramp time during the processes of starting and stopping of the traveling hydraulic system. The results of the experiments support that the value calculated from the rough formula of reference documents is lower than factually tested value. The ramping time varies in the payer's speed and the starting shock of the system is greater than that of stopping. The paper has set a simple and practical method to compute the section function of the minimum ramping time.
根据摊铺机行驶系统的基本要求及行驶系统的设计方案，首次在国内基于单片机设计了摊铺机行驶系统数字控制器；该控制器将模糊PID控制策略引入了控制器设计中，利用MATLAB软件，创建了系统仿真模型，对其进行了动态特性仿真，得到了马达转速输出的动态响应，结果证明了模糊自整定PID调节控制效果要优于传统PID调节，它融合了模糊控制和PID控制两者的优点，动态特性和静态特性都较好；室内模拟实验和野外实验结果都表明，摊铺机行驶系统的控制策略和方法是正确的，设计的数字控制器性能稳定，能够满足摊铺机行驶的要求，达到了预期的研究目标，这是该文的重要研究成果；本文对摊铺机行驶液压系统在起步、停机过程中无冲击的最短斜坡时间进行了实验研究，实验结果表明参考文献给的粗略计算公式计算值小于实测值，斜坡时间的大小因速度大小而变化，起步过程系统的冲击要大于停机过程的冲击，建立了最短斜坡时间分段函数的计算方法，该方法简单易行，最短斜坡时间的研究对于提高机器的作业效率，提高液压元器件的使用寿命，提高车辆控制的品质具有十分重要的意义。
Individual programming as well as easieast handing With CNC control and step motor technology makeThe automatic bartacker 510 a perfectionist pointing The way in the field of bartacking technique.
510是新一代最完美的全自动套结机。它采用电脑全自动控制和步进马达技术，可单独编程，并且操作非常简单。
According to the present problems and developing tendency of hydraulic turbine governor, four main issues of this field are studied in this paper. The content include hydraulic control system, frequency measurement unit, stability of the discrete control system, optimization of control parameters and self-adjusting PID control strategy based on fuzzy logic. Several main achievement and results are obtained and shown as follows:The electric-hydraulic pilot valve driven by step-motor is firstly proposed, which solves the problem that the electric-hydraulic converter of hydraulic turbine governor hydraulic servo is prone to be stuck and blocked and improves the systemic stability greatly.
本文根据水轮机调节领域存在的问题和发展趋势，对水轮机调速器的液压控制系统、频率测量环节、离散调节系统稳定性与调节参数最优整定以及适应式参数自调整PID控制策略进行了研究，得到以下主要成果和结论：首次提出了采用步进电机驱动的步进式电液引导阀，从根本上解决了水轮机调速器电液随动系统中存在的电液转换元件发卡、堵塞问题，使电液随动系统的可靠性大大提高。
Based on the analysis of the field weakening operation of asynchronous motor, a maximum torque control method was proposed for the field weakening of asynchronous motor to satisfy the higher torque output of motor driven system in electric vehicle.
对异步电机的弱磁运行作了深入分析，给出了弱磁运行时最大转矩控制的实现方法，可满足电动汽车对电机驱动系统的高转矩输出要求，实现方法简单可靠。
Based on road intersection signal control system of transportation projects on environmental impact studies for the content of civilization will Ganzhou City Road junction of the two representative lines as a major study, based on availability, comparability, and reliability of science The principle of selecting standard carbon monoxide, nitrogen oxides emissions by an average of the main targets, running through the system before and after the target line of traffic, the delay time of the field survey, calculated and compared to the region within the motor vehicle exhaust average The number of emissions and, ultimately, traffic signal system of environmental impact.
本文以道路交叉口信号控制系统改造项目对交通环境影响为研究内容，将赣州市文明大道两个路口这条有代表性的线路作为主要研究对象，根据实用性、可比性、科学性和可靠性的原则，选取标准车一氧化碳、氮氧化物的平均排放量为主要分析指标，通过对系统运行前后对象线路的交通流量、延误时间等的实地调查，计算和对比机动车对该区域内的尾气平均排放数量，并最终分析交通信号系统的环境影响。
Considering the speed tracking effect is not so satisfactory and the intrinsic end effect of linear induction motor, we present a method for constructing the mathematical model of this motor to compensate the end effect, and develop a field oriented control system based on single neuron PI for line.
针对此试验结果和此电动机本身固有的纵向边缘效应，提出了一种方法并建立了此电动机的数学模型，对边缘效应进行补偿，在此基础上设计了基于速度环单神经元PI调节的以转子磁场定向的矢量控制系统。
Based on the field emission testing laboratory, there are still some obvious shortcomings, The paper focuses on the room's field emission instrument Improvement and Design: First, Based on the piezoelectric ceramic micro-approximation system of understanding, the use of piezoelectric stepper motor systems, design, Manufacturing Field Emission Testing System rough adjustment Step System to improve the current tests used by the precision and stability is not good vacuum field emission devices rough one-dimensional positioning reconcile system, through piezoelectric stepper motor control the accuracy of the improved and reconcile a small peacekeeping positioning systems.
基于本实验室场发射测试也存在一些明显的不足之处，本文主要针对本室的场发射仪进行改进与设计：首先，通过对压电陶瓷在微逼近系统中的应用的了解，利用压电马达步进系统，设计、制造场发射测试系统的粗调步进系统，以改进当前所使用的测试精度和稳定度都不是很好的真空场发射测试装置的粗调和一维定位系统，同时通过压电马达的控制步进的精确度的提高，改进细调和一维定位系统。
On PMSM permanent magnet synchronous motor magnetic field oriented control of the compilation p...
该软件是关于PMSM永磁同步电动机磁场定向控制的汇编程序，对应的DSP处理器是TMS320F2407，解压后会出现CCS开发环境下的整个工程。
In accordance with the characteristics of electrically excited six-phase synchronous motor, the control system based on air-gap-field orientation vector control is adopted in this paper.
针对电励磁六相同步电动机的特点，建立了与之匹配的基于气隙磁场定向的直接高温线出线单头电热管矢量控制系统并进行了研究。
The journal publishes papers on research into the physiology of marine and freshwater animals, including all fields of physiology as well as behavioural and neurobiological matters; field and laboratory-based studies of excretion, osmoregulation, digestion, respiration, feeding, migration, reproduction, tidal and other rhythms, neurophysiology, neuromuscular, sensory motor control, anatomy, fine structure and scanning electron microscopy; studies on behaviour of animals in the aquatic environment, both natural and simulated in the laboratory; the results of research involving behaviour and physiology overlaping into the areas of aquaculture, fisheries biology, fisheries technology, fisheries oceanography, fisheries economics and management, fisheries engineering or seafood science and technology, or that have implications for these aspects of aquatic research.
杂志刊载论文内容有关海洋与淡水动物生理学研究，包括生理学所有领域，以及行为和神经生物学问题；排泄，渗透调节，消化，呼吸，饲养，迁移，繁殖，潮汐和其他节律，神经生理学，神经肌肉，感官运动控制，解剖学，精细结构和扫描电子显微镜的野外和实验室研究；水环境，以及自然和实验室中模拟动物行为研究；农业，渔业生物学，渔业技术，渔业海洋学，渔业经济学和管理，渔业工程或海产食品科学和技术，或这些方面在水研究中的应用等领域的行为和生理学研究结果。
In this scheme, the torque of motor is calculated and controlled in the stator reference frame. By using stator field orientation, the optimum switching mode is achieved to control the inverter.
它直接在定子坐标系下计算和控制交流电动机的转矩，采用定子磁场定向控制，直接对逆变器的开关状态进行最佳控制。
With the price drop of DSP and the development of motor control theory, the digital motor control is the trend of the future. In stepper motor control field, seldom people did such research ever, hopes this paper will benefits those people who have interests in this field.
随着DSP价格的下降和电机控制理论的发展，数字化电机控制乃是未来的趋势，在步进电机控制领域却还很少有人进行这方面的研究，希望本文的研究工作能起到一个抛砖引玉的作用。
All above present a new method and solution for further study in the field of motor control..
这些都为今后的电机调速系统提供了一种新方法和新思路。
The results of simulation and experiment indicate that the deterioration of the dynamic characteristics of the system is caused by leading angleof the current reference signal. With the magnetic field orient control, the brushless DC motor system can obtain a maximum output torque and the best dynamic characteristics. When the gain of the current ratio regulator and enlargement factor of power inverter are in-creased, dynamic characteristics of the system will become better; when the compound drive mode of sine wave plus triple and quintuple harmonics is used, the dynamic characteristics of the system can be improved.
仿真及试验结果证明超前角的存在都会使系统的动态性能变差，无刷直流电动机系统处于磁场定向控制的情况下，电机的输出转矩最大，系统的动态性能最好；增大电流比例调节器增益和功率逆变驱动电路放大倍数可以使系统获得更好的动态性能；采用正弦波加三次、五次谐波的复合驱动方式时，系统的动态性能得到提高。
ABSTRACT The control of induction motor with high precision and strong robustness is an important field in electric drives. It has been widely applied in robot control, machine tool drive, wiredrawing equipment and material testing machine, etc.
高精度、强鲁棒性的交流电机调速是电气传动领域的重要研究方向，在机器人控制、数控机床、材料试验机、拉丝设备等方面有越来越广泛的应用。
For the field orientation control of an induction motor, the rotor time constant is a very important parameter.
对交流感应马达磁场导向向量控制而言，转子时间常数为一相当重要之参数。
It was also the one of national-key-project researchers, developing the first 2Mev electrostatic electron accelerator, the first nuclear fusion control device, the first 70B deflection magnet Beijing Electron Positron collider, the nuclear motor for nuclear blower for 863 Qinghua HTR-10 project and the like, which making big contribution to the development of Chinese Electrical Machinery Industry and National Defense and building up a good reputation in Electrical Machinery Field.
新公司的前身是中国第一台感应电机、第一台电力变压器、第一台整流子变速电动机的制造者，同时成功地研制了大量高科技产品，是中国第一台2兆电子伏静电加速器、第一套核电设备控制棒驱动机构、第一块北京正负电子对撞机储存环70B弯转磁铁、清华大学高温气冷堆HTR-10风机配套核级电机等国家重点项目的研发者，为我国机电工业和国防事业的发展做出了积极贡献，在行业内享有盛誉。