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电流闭环     
相关语句
  current loop
     On the Reason of Motor Soft-start Uniformly by Means of Current Loop
     论电流闭环软起动的合理性
短句来源
     Due to the particular load characteristic, both the current loop and voltage loop control circuits are devised.
     并且针对其独特的负载特性,在设计电流闭环控制电路的同时,还设计了电压环控制电路。
短句来源
     On the foundation that realizes rectification , this system designed the closed current loop , and adopt NN PID regulator to control current on real time. Additional,the system can keep watch on the working condition.
     本系统在实现整流的基础上,设计了电流闭环回路,采用神经网络PID调节器在线实时控制电解电流,同时设计了监视环节对整个系统的工作状况进行监视。
短句来源
     Furthermore, a double-closed-loops control system with current loop and current-close- angle loop is proposed based on single-closed-loop system, and then these two kindsof systems are analyzed and compared.
     最后,采用多种控制方法对交流调压鼠笼电机的起动电流实施控制,在电流闭环控制系统的基础上重点提出了基于电流—截止角双闭环的控制系统,并对这两种控制系统进行了分析和比较;
短句来源
     Thispaper, through the analysis of closed current loop controlling system, draws aconclusionof one -order response when themaximum rectifying voltage satisfies Vdm ≥IR1 - e - τr. .
     通过对一个电流闭环控制系统的分析,得出了当一个直流控制装置,其最大整流电压Vdm满足时,即可实现一阶响应的结论。
短句来源
更多       
  current closed-loop
     The current closed-loop system is composed of current controllers that control variable parameter PI.
     并通过变参数PI数字电流控制器构成电流闭环系统。
短句来源
     A stable AC current power supply circuit based on current closed-loop feedback control is brought forward in this paper and how to design the circuit is also emphatically introduced.
     文中提出了一种采用电流闭环反馈控制的交流恒流源电路,重点介绍了该电路的设计思想。
短句来源
     After analyzing different power steering systems,the control strategies for assist motor in an electric power steering system(EPS) are emphatically discussed based on traditional control theory,including the designs of current closed-loop PI controller and current set-point algorithm.
     在分析现有的各种助力控制策略的基础上,着重讨论了基于传统控制理论设计的电机控制策略与系统性能的关系,其中包括电流闭环PI控制器的参数设计及电流给定算法设计。
短句来源
     Design the specific machining way of EC current closed-loop control technology on inexact differential PID algorithm,develop the EC current acquirement,amplification and the computer real time collecting passageway,and design relevant controlling program.
     设计了基于不完全微分PID算法的可控电解珩磨电流闭环控制方法,研制了电解电流获得、放大以及计算机采集通道,并编制相应的控制程序。
短句来源
     Employ feed-forward control technology, the paper designs PI regulator control of current closed-loop and voltage closed-loop. Using Power Electric toolbox offered by MATLAB to finish the simulation experiment under Simulink environment and to verify systematic exactness and feasibility.
     应用前馈控制技术,设计了基于PI调节器的电流闭环和电压闭环的双闭环控制系统,利用MATLAB提供的电力电子工具箱在Simulink仿真环境下进行了仿真实验,验证了系统的正确性和可行性。
短句来源
更多       
  current close-loop
     Some features of UC1524A improved PWM controller are described in this paper. The Applicationof UC1524A as current close -loop regulator is introduced and the experiment results are given-
     描述了UC1524A改进型PWM控制器的一些特点,并结合作者研制的大转矩变磁阻电机位置控制系统的实践,介绍了UC1524A作为电流闭环调节器的具体应用,给出了实测结果。
短句来源
     Triangular carrier waveforms are used in current close-loop tracking,so that the switching frequency of the device in the main circuit remains constant and the compensation current follows the reference current accurately.
     采用三角载波方法进行电流闭环跟踪,主电路器件开关频率固定且补偿电流准确跟踪指令电流.
短句来源
     When driving a DC Motor,Buck converter which adopts current close-loop tracking control will result in serious current overshoot easily if there is no effectual measure to be taken,and then the current stress of switches is high.
     Buck变换器驱动直流电机时,在电流闭环调节过程中,若不采取有效措施,将容易产生过大的电流超调,使得开关管的电流应力过大。
短句来源
     The grid converter adopts the voltage and current dual close-loop control strategy. The rotor converter adopts rotor current open-loop control before cutting-in, and the active and reactive current close-loop control after cutting-in.
     其网侧变换器采用电压电流双闭环控制策略,转子侧变换器并网前采用转子电流开环控制策略,并网后采用有功、无功电流闭环解耦控制策略。
短句来源
     Triangular carrier waveforms are used in current close-loop tracking, so that the switching frequency of the device in the main circuit remains constant and the compensation current follows the reference current accurately.
     采用三角载波方法进行电流闭环跟踪,主电路器件开关频率固定且补偿电流准确跟踪指令电流.
  current closed
     Research on Current Closed Control for Energy-saving EDM Pulse Generator
     节能电火花加工脉冲电源放电电流闭环控制的研究
短句来源
     Using the current closed loop PI system and establishing the delivering function, the external circuit on UC3875, driving circuit on 1GBT, the control PCB power supply circuit, welding process control circuit and several protesting circuit is designed.
     控制系统采用了电流闭环PI调节系统,建立了相应的传递函数,设计了移相控制芯片UC3875外围电路、主功率器件IGBT的驱动电路、控制板电源优化电路、焊接过程程序控制电路以及各种保护电路。
短句来源
     The simulation model of soft starting system by using PI current closed loop control for asynchronous motor was established based on MATLAB/Simulink and simulation was carried out through actual example.
     利用MATLAB软件中的动态仿真工具Simulink对采用PI电流闭环控制的异步电动机软起动系统建模并进行了实例仿真。
短句来源
     Besides,a simple and practical method to realize the current closed loop in hardware is offered.
     同时提供了一种简单实用的电流闭环控制的硬件实现方法.
短句来源
     Three-phase bridge inverter used, the current in each phase is made similar to sine wave using current closed loop control.
     以IGBT三相桥作为主逆变电路,对电机绕组电流按正弦规律进行电流闭环控制实现正弦波细分驱动。
短句来源
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  current loop
This is the approach used by Bam-Zelikovich [5] to investigate subsonic and supersonic jet flows through a current loop.
      
Calibration parameters for the probing tip of a magnetic force microscope in the field of a test current loop
      
The subject of discussion is calibration of the tip of a magnetic force microscope using the field of a ring-shaped current loop.
      
The calculated dependences of the effective calibration parameters on the radius of the current loop are compared with experimental data.
      
The distinct roles of the external and internal forces applied to the current loop is emphasized.
      
更多          
  current closed
We design a synopsis data structure to monitor transactions in the sliding window so that we can output the current closed frequent itemsets at any time.
      
Simulated contours of self-reversed lines of Tl at 535 nm (72S1/2-62P3/2) and 378 nm (72S1/2-62P1/2) in alternating-current closed-arc radiation in mercury vapor with an addition of Tll were compared with experimental contours.
      
A patient with a current closed pneumothorax should not travel on a commercial flight.
      
Current closed itemsets are maintained and updated in real time in the DIU tree.
      
It first checks if X is in the current closed itemsets set C.
      
更多          
  其他


In this paper, the basic principles and performances of a fast analog-regulating system are analyzed. Then the calculating method and formulation of the static and dynamic characteristics of this system are given. The fast analog-regulating system is simulated by an electronic analog computer. The theoretical calculation in the main agrees with experimental results. By correctly designing and adjusting parameters of the fast analog-regulating system, we can achieve good performances of the static and dynamic...

In this paper, the basic principles and performances of a fast analog-regulating system are analyzed. Then the calculating method and formulation of the static and dynamic characteristics of this system are given. The fast analog-regulating system is simulated by an electronic analog computer. The theoretical calculation in the main agrees with experimental results. By correctly designing and adjusting parameters of the fast analog-regulating system, we can achieve good performances of the static and dynamic characteristics of this system. To a certain extent, the performances of this system is more advantageous than the double closed-loop drive system which is in wide application at present. In addition, it is also convenient to design and adjust this system. As this system does not need current closed-Loop, the current detecting device is omitted. Thus, the construction of this system is simplified and the reliability thus increased.The fast analog-regulating system introduced in this paper, is a reversible direct current drive system which is worthy of utilization and spreading.

本文对快速模拟调节系统的基本原理和性能进行了分析,提供了计算该系统静、动特性的公式和方法.利用电子模拟计算机对快速模拟调节系统进行了模拟试验,实验证明,本文所提供的计算公式与实验结果是一致的.正确地设计和调整快速模拟调节系统的参数,能使系统静、动特性都达到良好的性能指标,在一定程度上要比目前常用的双闭环直流传动系统的性能优越,而且设计调试方便.由于本系统不需要电流闭环,省去了电流检测装置,简化了系统结构,运行可靠性提高,所以本文所介绍的快速模拟调节系统是一种值得推广应用的可逆直流传动系统.

The single-closed-loop digital speed control system of D.C.drive bymicrocomputer is studied in this paper.The adjustment of starting process isdivided into three stages.They are(1) acceleration with constant current,(2) in proportion and(3) integral.Therefore,the contradictory betweenhigh-speed and overshoot regulation in starting process could be solvedbetter.It can not only start with the highest acceleration,but also make thesystem to reach stable revolution speed without overshoot.At the same time,the system...

The single-closed-loop digital speed control system of D.C.drive bymicrocomputer is studied in this paper.The adjustment of starting process isdivided into three stages.They are(1) acceleration with constant current,(2) in proportion and(3) integral.Therefore,the contradictory betweenhigh-speed and overshoot regulation in starting process could be solvedbetter.It can not only start with the highest acceleration,but also make thesystem to reach stable revolution speed without overshoot.At the same time,the system has a good static accuracy.Comparing with the conventional doube loop analog speed control sys-tem,the new system can(1) realize starting with constant current accele- lation with no need of closed-loop current,(2) overcome the overshootwhich could not be avoided under the best acceleration start of the doubleroop system.So the system construction can be not only simplified,but alsothe start performance improved with easy adjustment.The principle of the system,the method of design and the experimentalresults are given in the paper.

本文研究微型机控制的单闭环数字直流调速系统。将启动过程的调节分成(1) 恒电流加速;(2) 比例;(3) 积分三个调节阶段,较好地解决了系统在启动过程中快速和超调之间的矛盾,使系统既能以最大加速度启动,同时,又能使系统平稳、无超调地达到稳定转速,且具有良好的稳态精度。这样,较之常规的双环模拟调速系统(1) 能不需要电流闭环就能实现恒电流加速启动;(2) 能克服双环系统在最大加速度启动下不可避免的转速超调。这样,不仅简化了系统结构,同时,又改善了系统的启动性能,且调试方便。文中包括:该系统的原理,设计方法及实验结果。

An investigation has been made on the strip surface problems on 1600 strip mill. In

现代高速带材轧制中经常出现一种异常的运行工况——轧机颤振,同时产品表面出现周期横向条纹,近年某厂从日本引进的1600高速铝带轧机亦有类似问题,以致难以生产高精度带材。它是当前轧制领域中急待解决的难题。作者根据产品表面印痕特征与统计规律,对轧机横向振动进行了系统研究: ·在线采集轧机系统输入输出信息; ·用瞬态激振与计算方法研究轧机固有动态特性; ·运用相关与自谱分析识别轧机振动的统计规律; ·运用互谱与互相关分析进行振源的识别。由此得出对1600轧机横向振动及产品表面印痕的某些认识: ·1600轧机稳态轧制中同时存在轧机横向振动与传动系统扭振,在其固有频率与激振频率异常接近的几个频带出现共振响应,并直接导致产品表面印痕,其中600Hz高频垂振共振响应频率是产品印痕主频率。·垂振振源为主电机电源中50Hz各阶倍频交流分量,控制系统的“双环”增强了这种干扰,振源通过基础激励与回转-垂直耦合激励轧机垂振。最后,提高了改善现有轧机动态特性与抑制、减轻产品印痕的对策: 1.增强供电系统滤波功能,增大平波电抗器容量,以清洁电源。 2.在控制回路的速度闭环中串接一个二阶微分校正网络,消除机电系统低频振荡;在电流闭环$...

现代高速带材轧制中经常出现一种异常的运行工况——轧机颤振,同时产品表面出现周期横向条纹,近年某厂从日本引进的1600高速铝带轧机亦有类似问题,以致难以生产高精度带材。它是当前轧制领域中急待解决的难题。作者根据产品表面印痕特征与统计规律,对轧机横向振动进行了系统研究: ·在线采集轧机系统输入输出信息; ·用瞬态激振与计算方法研究轧机固有动态特性; ·运用相关与自谱分析识别轧机振动的统计规律; ·运用互谱与互相关分析进行振源的识别。由此得出对1600轧机横向振动及产品表面印痕的某些认识: ·1600轧机稳态轧制中同时存在轧机横向振动与传动系统扭振,在其固有频率与激振频率异常接近的几个频带出现共振响应,并直接导致产品表面印痕,其中600Hz高频垂振共振响应频率是产品印痕主频率。·垂振振源为主电机电源中50Hz各阶倍频交流分量,控制系统的“双环”增强了这种干扰,振源通过基础激励与回转-垂直耦合激励轧机垂振。最后,提高了改善现有轧机动态特性与抑制、减轻产品印痕的对策: 1.增强供电系统滤波功能,增大平波电抗器容量,以清洁电源。 2.在控制回路的速度闭环中串接一个二阶微分校正网络,消除机电系统低频振荡;在电流闭环中设置窄带滤波器,消除机电系统高频振荡。 3.调整润滑剂极性,增强油膜抗振能力。对新设计轧机,为获得良好动态特性,应对机、电、液、气、工艺进行大系统动态优化设计。

 
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