并联

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。

This paper stated the application of parallel link mechanism in modern machine tools,set up the error analysis as to parallel link mechanism in the virtucal-axis machine tool,derived the double triangular error equations of parallel link mechanicsm in its horizontal posture,analyzed the linearity and non-singularity of the error equations,thus giving the normal splution to the horizontal posture error.

该文对并联机构在现代机床上的应用作了论述，建立了虚拟轴机床并联机构的一种误差分析方法，应用坐标变换原理导出了双三角并联机构水平姿态时的误差方程组；分析了误差方程组的线性和非奇异性，给出了水平姿态时的位姿误差正解；对工作空间中心线的误差分布规律进行了仿真，绘制了其误差分布曲线。

The influence of stagger angle of axial flow fan upon the operation performance of parallel running was obtained.

该文在2台风机并联运行的基础上，绘制并联风机的性能曲线，获得叶片安装角对并联风机运行特性的影响。

The main production of Self-healing low voltage shunt capacitor, AC motor soft starter intelligent, reactive power compensation controller, TBB series of low-voltage shunt capacitor devices, CBB60, CBB61, CBB65, CD60 series AC motor capacitors, metal pulse capacitor, magnetizing plane capacitor, ultraviolet lamp capacitor, split-phase shunt capacitor compensation, and other various low-voltage electrical products.

主要生产自愈式低电压并联电容器、交流电机智能软起动器，无功功率补偿控制器，TBB系列低压并联电容器装置、CBB60，CBB61，CBB65，CD60系列交流电动机电容器、金属化脉冲电容器、充磁机电容器、紫外线灯电容器、分相补偿并联电容器以及其它各种低电压电器产品。

In this condition, the parallel transformer can exhibit nearly zero impedance to harmonic current and very high primary self-impedance to fundamental current and thus lead harmonic current in power systems to flow into the transformer branch. With a step-down transformer, the power semiconductor switches of the active power filter are always worked in relatively low voltage, which ensure the security and reliability of the active filtering device.

实时检测并联变压器一次侧的谐波电流，根据谐波补偿条件，得到谐波补偿电流的指令信号，通过电力电子变流器跟踪产生谐波补偿电流注入到二次侧补偿绕组中，使得并联变压器对谐波电流呈现近似为零的低阻抗，对基波电流呈现很大的一次侧自阻抗，从而输导系统中的谐波电流流入并联变压器支路。

Error analysis In order to analysis the pose error of the hexapod machine tool, considering the characteristics of the parallel mechanism,"analysis on the error prominency factors for the hexapod machine tool pose error"is proposed. Numerically, the error prominency factor can express the influence on the pose error of the tool resulted from the mechanism parameter error within the whole workspace.

四、位姿误差分析为了定量地对并联机器人机床位姿误差进行分析，结合并联机构的特点，首次提出了&并联机器人机床位姿误差放大因子分析法&，因位姿误差放大因子是反映机床机构参数误差对刀具末端误差影响大小的机床工作空间内的统计值，因此既可作为机床结构参数精度设计的依据又可对机构参数进行优化。

Due to traverse motion unstable problem of riderless bicycle,simulating dynamics characteristic on human riding bicycle,and adequately using parallel mechanism s merits such as compact frame,great rigidity,rapid response rate and great loading capability,a traverse adjustment method of riderless bicycle based on 2-RHR redundantly actuated parallel mechanism was presented.

针对自行车机器人运动的侧向不稳定性，模仿人骑自行车的动力学特征，充分利用并联机构的结构紧凑、刚度大、响应速度快、承载能力强的特点，提出了一种基于2-RHR型冗余驱动并联机构进行自行车机器人侧向稳定调节的方法，系统地阐述了并联机构侧向调节方式的可行性和优越性。

The traditional parallel theory without control interconnections has been adopted commonly in the parallel inverter system. There is a deviation between the steady output frequency and the instruction of this system controlled by the above scheme,and the heavier the load is, the droopier the frequency will be. When the error is out of the permitted range, the system can not be operated normally.

逆变电源无线并联系统常采用传统无线并联理论，即电压-频率下垂理论控制，采用此方案控制的并联系统，其稳态输出电压频率与指令值有偏差，且所带负载越重，稳态输出频率下降越多，当偏差超出允许范围时就会对所带负载造成影响，使其不能正常工作。

A paralleling control contains the electrical equipment provided in a paralleling system for control of a single generator set.

并联控制，并联控制是并联系统中用来控制单个发电机组的电气设备。

Kinematics and dynamics modeling and analyzing method of a 3-RRRT parallel robot was studied. Kinematic model of the 3-RRRT parallel robot was set up with both the branch bar's relative coordinates and movable platform's absolute coordinates used as it's generalized coordinates. On the base of Kane's equation, dynamics model of the 3-RRRT parallel robot was built. Dynamic Numerical simulation of the 3-RRRT parallel robot was finished by using Matlab software, and so it provides valuable reference for motion control strategy of the 3-RRRT parallel robot.

研究一种3-RRRT新型高速搬运机器人运动学与动力学建模及分析方法，以支链构件相对运动坐标和动平台绝对运动坐标作为广义坐标，建立了3-RRRT型并联机器人的运动学模型，结合带乘子的凯恩方程建立了3-RRRT型并联机器人的动力学模型，并利用Matlab软件平台进行了动力学数值仿真，进而为3-RRRT型并联机器人的控制策略研究提供参考。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。