查询词典 loop control

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

Linear Fractional Transformation is adopted to translate the control of perturbation to the control of disturbance, then cost index is augmented, and with the min-max method, a robust receding horizon control law is derived. The sufficient conditions for the existence of the control law and closed-loop stability are also presented. The result is extended to time-invariant system with an infinite horizon, and its consistence with the robust control based on the concept of Quadratic Stability is verified.

首先利用线性分式变换，将摄动系统的鲁棒控制问题转化为对扰动系统的鲁棒控制问题；然后通过对性能指标的扩展，利用min-max方法，得到了鲁棒滚动时域控制律，并给出了其存在和使闭环系统渐近稳定的充分条件，并将结果扩展到对定常系统时域无穷的的情况，指出其与现有的基于二次型稳定概念提出的鲁棒控制的一致性。

The servo control system combines position loop,speed loop,current loop with algorithm of space vector pulse width modulation.

系统采用位置、速度和电流环三环控制，并结合空间矢量脉宽调制算法。

Performance evaluation method system of hierarchical IFFCS in air-to-air gunnery mission: The IFFC essence in air-to-air gunnery mission is a problem of space pointing track. Its hierarchical structure consists of three level loops: flight control system loop, space pointing track loop and tactical mission loop.

多重递阶的综合飞行/火力控制系统空/空机炮模态性能评价方法体系；综合飞行/火力控制系统空/空机炮模态本质上是一个空间指向跟踪问题，其多重递阶结构从内到外包括三个层次的回路：飞行控制系统回路、空间指向跟踪回路和战术任务回路。

Aiming at the limitations currently existing in controlling mine excavator with magnetic triggers,such as slow dynamic response of system,poor dynamic index and excavator characteristics,as well as complicated structure,etc.,the strategy of double closed-loop excitation electric adjustment,i.e.current inner loop and voltage outer loop,is adopted to design an advanced electronic integrated control system for mine excavator.

目前矿用电铲常见的是采用磁性触发器进行控制，存在系统动态响应慢、动态指标欠佳、电铲特性不理想、结构复杂等缺陷，采用电流内环和电压外环的双闭环励磁电调方案，设计了一种先进的电子集成电铲电控系统，详细介绍了系统电路结构，尤其是电压、电流调节器及其反馈电路与特性适配电路的基本原理和功能特点。

The control system includes detector circuit, protection circuit, control and man-machine interface circuit, which makes full use of DSP resources for high reliability and simplified the construction of system. The fifth section provides system software design, In order to read and maintain easy, a microprogramming modular is adopted. A new control strategy of Fuzzy voltage PWM combined Fuzzy angle control is realized for improving motor s working efficiency. At the same time, it simplify control model of SRM, reduce cost. At last, the result of experiment testify it, the electric machine gain success of simultaneous electrify two phase loop, the timing range is

第五部分为系统软件设计，采用模块化设计，增强了系统的可读性与可维护性；根据SR电机的特点，实现了模糊变角度电压PWM控制，避免了在单纯电压PWM方式下，电机高速时效率下降较大的缺点，也避免了在采用电流斩波与角度位置复合控制时方式转换所带来的弊端，同时也简化了控制，降低了成本；最后给出实验结果，实现了电机的双相稳定运行和良好调速，调速比达40：1。

The characteristics of multibar raschel lace were studied in this article, and the spline function was suggested to the loop structure and determine the minter and position of control points necessary for forming a loop by a guide bar through wd insertion and fall-plate. And the theoretical model for each typed loop we set up.

研究了多梳拉舍尔花边的结构特征，根据花边织物的结构特点提出了用样条曲线来模拟线圈结构，并确定了花梳作成圈、衬纬和压纱组织时线圈结构中控制点的数目和位置，建立了花边织物中线圈结构的理论模型。

For wire bonding,we got methods to avoid low-k material layer crack and IMC crack by gold wire selection,capillary design optimization,and wire bonding process window study;Wire sweep issue was declined,after use reverse wire bonding technology to get low wire loop,define high wire loop and low wire loop between neighbour wires to reduce wire cross and split transfer course into several segments by different transfer speed to control mold flow;For molding and to different packages,as a physical method,add suitable presser during different cure process,it can reduce warpage value;As chemical methods,optimized component of molding compound or added flexiblier,it can decline thermal stress and warpage.

在引线键合方面，通过对不同纯度金线的选择、劈刀设计的优化、以及对引线压焊工艺窗口的研究，找到了可降低焊盘碎裂，金铝间化合物分层等问题的方法；通过使用反向压焊来控制线线弧高度和在邻近线间使用高(来源：A7aB4848C论文网www.abclunwen.com)低线弧来控制线弧以及模塑注塑速度细分化的方法，有效降低了冲线值；在模塑方面，针对不同封装形式，通过封装模块在烘烤过程中优化外加压力的时机，利用物理方法有效减低了翘曲；此外从化学角度出发，通过对模塑材料配方的优化以及添加应力释放剂，有效降低了封装内的热应力，减小了封装模块的翘曲。

Looked as shown in Figure 4-45 to Figure 4-47 superposition of the various forms of valves, we can see an overlay of each valve of the control valve in accordance with its traditional function of the original to be stacked together in the future pose a loop of these two factors, The rig out of the loop than the traditional form of control valves a lot more, like there are three kinds of relief valve, there are three kinds of valve.

看了图4-45至图4-47所示的各种形式的叠加阀，可知每一种叠加阀依其各控制阀原来传统的功能再加上将来要堆叠构成的回路这两项因素，而拼凑出来的回路形式要比传统控制阀多出许多，像溢流阀有三种，减压阀也有三种。

The aerodynamics subsystem is designed employing classical control methodology, including the inner loop which adopt angular rate feedback to stabilizing the attitude, and the outer loop which track the guidance command, and the proper emendation nets are designed for each loop.

采用古典控制理论来设计气动力控制系统，包括具有角速度反馈的稳定内回路、跟踪制导指令的外回路以及各校正环节的设计。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。