伺服系统

System bandwidth is one of the most important judging criteria for the performances of the electrohydraulic position servo system.

电液位置伺服系统中，频带宽度是反映系统性能的主要评定依据之一。提高系统的频带宽度，可以加快系统的响应速度和提高动态跟随精度。

It consists of optical collimator system, optical focusing system, servo error signal generating system and the enforce element of servo system . It is a complex system, which is involved in optics, fine machine, electromagnetic, et al.

光学读取头包含准直光学系统、聚焦光学系统、误差信号提取系统、以及伺服系统的执行机构等部分，是一个综合了光学、精密机械、电磁学等学科知识的复杂系统。

Simulation and analysis are made respectively under different situation of delay. Fuzzy adaptive controller that can adjust the system parameters appropriately is designed to minimize the error caused by Network-Induced Delay. Simulation is realized of this controller in NCS. Experiments are carried on the Servo-System based on Field Bus. The results of simulations and experiments indicate that good performance can be achieved with the method presented above.

为改善网络时延给系统带来的影响，设计了可以适当调整控制器参数的模糊自适应控制器，对含该控制器的网络控制系统进行了仿真，并在构建的基于现场总线的伺服系统实验平台上进行了实验，仿真和实验验证了在网络控制系统中使用该算法可以达到满意的控制效果。

To study the visual servo-performance of a robot on a common theoretical basis, a generalized visual servosystem model is proposed based on the task function method.

为实现在统一的理论框架下对机器人视觉伺服基础特性进行细致深入的研究，本文基于任务函数方法，建立了广义的视觉伺服系统模型。

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

为此，我们基于以上的硬件环境设计了一个自适应同步控制器：首先通过信号发生卡对系统输出小幅度的参考信号r(从而保证振动系统工作处于线性状态)，信号通过前置放大器、功率放大器等送到激震器动圈，并通过电磁感应产生振动，振动信号通过可控震源激震器反应块M〓和基板M〓上的加速度传感器反馈给伺服系统中的数据采集卡，工控计算机根据采集卡的反馈信息，获取当前激震器动圈的振动状态y〓，并实时地将该状态与内置的参考模型在当前参考输入r下的参考输出y〓进行辨识，再将两者输出误差e〓＝y〓-y〓对系统的有关控制参数进行调整，直至y〓→y〓，最后在经过某一固定的相位后，开始信号的正常扫描过程，与此同时，由可控震源系统的同步信号输出部件向地震仪送出一地震信号记录同步信号，进而完成扫描相位同步控制过程。

A new parameterized controller is designed for a hard disk drivehead positioning servo system which currently uses the voice coil motor as its servo mechanism.

针对以音圈电机作为伺服机构的硬盘磁头定位伺服系统的性能要求，设计了一个参数化的控制器并进行仿真和实验研究。

Permanent magnet synchronous motor driven by triphase sinusoidal current is research object in this paper. On the basis of analysis of the structure, movement principle and math model of PMSM, Fundamental theories and structure of the system of PMSM alternating current servo systems based on DTC are discussed. Then Simulation models of traditional PMSM DTC and PMSM DTC based on vectors subdivision are established separately.

本文以三相正弦波驱动的永磁同步电机为研究对象，在分析永磁同步电机结构及数学模型的基础上，系统阐述了基于直接转矩控制的永磁同步电机交流伺服系统的基本原理和系统构成，并在MATLAB仿真环境下分别建立了传统直接转矩控制和基于矢量细分算法的直接转矩控制系统的仿真模型。

The paper chooses the assembly of aircraft digital assembly location as a research object, chooses the assembly of aircraft section as a research example, aims to study the method of aircraft digital assembly location, focuses on the research of the structure of digital assemble control prototype system for aircraft section based on laser measurement, develops the servo control device and related software based on LM629, ATmega128 and LMD18200, completes the construction of the system based on the assembly of aircraft section.

以飞机的数字化装配定位为研究对象，以飞机舱段的装配为例，以探索飞机数字化装配的方法为目的，通过对基于激光测量的飞机舱段数字化装配定位控制原型系统结构的研究，采用运动控制芯片LM629、单片机ATmega128和功率放大芯片LMD18200构成了伺服系统控制随动装置，并开发了相关软件系统，完成了基于舱段大部件装配的数字化装配定位控制原型系统的设计开发。

The simulation outcomes show that the control strategy is very effective to Shunt-wound APLC. 3. This chapter analyzes vibration of a traditional servo motor include relay with place and time lag, and brings forward fuzzy control scheme, changes the time of control action in the place delay zone, When reaching the balance point, system will be freedom movement. Theory analysis and simulation outcome all prove that control arithmetic is right.

针对一类带位置、时间滞后的继电器型伺服系统，分析其产生抖动的原因，并在此基础上提出了改善一种特定的带有继电器的伺服电机模糊控制策略，在继电器空间滞后区改变控制作用时间的大小，在靠近平衡点附近引入自由运动。

Adopting MATLAB software to carry on simulation about the parameter self-adjustable fuzzy PID controller set up of application to the pulse position loop of the radar servo system. It has made a detailed analysis to its simulation result, compared with original system and PID control system about step function response, slop response and the system characteristic by the parameter of control system changed.

采用Simulink软件对所建立的参数自整定的模糊PID控制器在伺服系统单脉冲跟踪位置回路中的应用进行了仿真，对仿真结果作了详细的分析，并与原系统和PID控制系统就阶跃响应、斜坡响应以及控制对象参数发生变化时系统的性能进行了对比。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。