The principle of double cladding fiber laser is analyzed , simply illustrated the principle and drawbacks of noncoherent beam combination , the coherent beam combination method of multiple optical power amplifier and its advantages are discussed in detail 分析了双包层光纤激光器的工作原理，简单介绍了非相干组束的原理和缺陷，重点阐述了并联主振荡相干组束方法及相干组束的优势。
The load character and control object for a parallel inverter is analyzed , the conclusion that series and parallel resonant circuit are two antithetic circuits is pointed out , this provides a theoretical guide to the control circuit design for these two inverters 分析了并联谐振逆变器的负载特性及控制目标，指出串并联谐振逆变电路是两种对偶电路，为这两种逆变器控制电路的设计提供了理论指导。
According to the characteristics and technical requirements , the thesis researches and developed the lubricant control system and computer controller for the multi - condensing unit . the equipment cost is reduced and the economic benefit is significant 西安建筑科技大学本文的主要内容是根据并联机组的特点和技术要求，研制开发了并联机组的润滑油控制系统以及专门用于多台压缩机综合管理的电脑控制器。
In the part of reverse displacement of the parallel manipulator is discussed , the forward displacement of two kinds of parallel manipulator is carried out , then , the question of passive joints is analyzed . at last , synthesis hereinbefore parts , the examples are given 在运动分析部分，研究了并联机构的位置逆解，并推导求解了两种并联机构的封闭位置正解，分析了各分支的被动关节的求解问题，综合以上各方面，给出算例。
The analytical equations of workspace boundary surfaces for the octahedron parallel machine tool and the new type of parallel machine tool are derived based on the forward displacement analysis . based on it , the projection graphs of workspace boundary surfaces are drawn 提出了并联机床工作空间分析的解析方法，得到了八面体并联机床和新型并联机床的工作空间边界曲面的解析方程，并在此基础上绘出了工作空间边界曲面的图形。
The concept called parallel macro - micro robot is presented . two kinds of optimal disposing methods of the cables ? tensions are used to build the inverse kinematics model of cable and cabin system . the error compensation model of the fine tuning stewart platform is deduced 本章提出了并联宏-微机器人的概念及基于悬索张力均匀原则和悬索系统势能最小原则的两种索张力优化配置方案，并在此基础上建立了并联悬索系统的逆运动学模型，推导了动基座stewart平台的误差补偿模型。
Defining the pose parameters of the tool as the driving dimensions and the length of actuating limbs as the driven dimensions , the configuration of the simulation mechanism was varied correspondingly with the variation of the driving dimensions and the driven dimensions ( length of actuating limbs ) could be acquired and recorded 给出了并联机床机构简图和虚拟样机实体模型，通过将数控代码进行预处理，进行了并联机床的虚实映射计算，即给定刀具位置和姿态的驱动尺寸、驱动杆件长度的被驱动尺寸，在装配约束作用下驱动尺寸带动整个机构运动，记录杆件长度的被驱动尺寸，求解出杆长的值。
In this paper , after the kinematics of parallel - pole device are analyzed , the parameters of this device are given and the design of this machine are finished . as well as , the sources and the characters of errors are analyzed , and the method of error compensation are found out . thus the accuracy is greatly improved though the acting - device is made as usual 本文分析了并联式伸缩机构的运动几何关系，给出了该机构的有关参数，完成了机械部分的设计，同时分析了该机构中各单一因素对测量误差的影响，得出了误差补偿的依据，使得传感器执行机构在加工精度要求一般的情况下，具有较高的测量精度。
The algorithm to seek link security travel and the ability of the position and posture is established by borrowing the thought of dichotomy ; the curve on the relationship between the posture ability and the structural parameter is obtained ; the synthesis algorithm on the safety mechanism of the parallel robot is established on this foundation , and the algorithm is divided different module 借用二分法的思想,建立了求取机构安全行程和中位姿态能力的算法;得出了结构参数与中位姿态能力之间的关系曲线;并在此基础上建立了并联机器人安全机构的尺度综合算法;将各个算法按功能划分成不同模块,编制了相应的软件。
Through theoretic reckoning and simulating analyzing , several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current . based on it , some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage . two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure 通过理论计算和仿真分析，比较了并联型apf的几种控制策略的优点和缺点，从中选择瞬时无功理论控制策略i _ p - i _ q计算方式为指令电流产生的算法，并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制；比较了并联型apf主电路的两种常见形式，从中选择了三相电压型变流器的主电路形式；算出适合该apf的直流侧电容和出线电感的参数；设计出能有效消除apf产生的高次谐波的高通滤波器。
