电机机械

Qingdao Chengtong Construction Machinery Co., Ltd. mainly produces a variety of ingredients for concrete, concrete mixer, vibration rods, electrical and supporting products.

青岛诚通建设机械有限公司主要生产各种规格的混凝土配料机，混凝土搅拌机，振动棒、电机及其配套产品。

E. , the fundamental cause of nonlinear coupled oscillation is the results of the interaction between the several nonlinear factors existing inside the motor, as well ws the mechanical drive, and the converter control system with discrete-sample and modulation.

本文依据理论分析、实验及现场测试研究，详细地分析了电力传动系统中存在的非线性耦合振荡现象，基本弄清了此类非线性耦合振荡的机理，即：电机内部非线性及机械拖动部分存在的多种非线性因素与具有离散采样和调制非线性特性的变流器控制系统之间的相互作用是造成系统非线性耦合振荡的根本原因。

Based on description method of damping motion in mechanical vibration, variables movement of generator are divided into two basic motion models: damping oscillation and critical damping motion. Detail methods of extracting damping parameters from simulation data is introduced to establish variable motion models. An approximate method is put forward to simulate low-frequency signal and generator response characteristic, from which motion models and damping parameters of main variables are obtained. The influences of oscillation amplitude, frequency and initial operating point of power system to the motion damping parameters are analyzed.

借鉴机械振动中阻尼运动的描述方法，将低频振荡下发电机主要变量的运动归纳为阻尼振荡和临界阻尼两种基本运动形态；介绍了从仿真数据提取阻尼参数建立参数运动模型的方法，实现对发电机振荡特性的量化分析；提出一种系统侧低频振荡信号的近似模拟方法，并应用于发电机响应仿真，获得了主要变量的运动模型和阻尼参数；分析了系统侧振荡幅度、频率以及初始工况对发电机功角振荡的影响。

The reduced dynamic model including motor dynamics is developed for nonholonomic mobile manipulators. The system is then decomposed into four lower-dimensional subsystems by applying diffeomorphism and nonlinear input transformation to the reduced model. The design of robust controller is also addressed for the output tracking of mobile manipulators.

首先给出了包括驱动电机动态特性的非完整移动机械臂的简化动态模型，然后通过微分同胚和输入变换将其分解为四个低阶子系统，并给出了其输出跟踪的滑模控制器设计方法。

Firstly, the reduced dynamic model including motor dynamics is developed for mobile manipulators. The system is then decomposed into four lower-dimensional subsystems by applying diffeomorphism and nonlinear input transformation to the reduced model. The design of the second order dynamical sliding mode controller is then addressed for the output tracking of mobile manipulators.

首先给出了包括驱动电机动态特性的移动机械臂的简化动态模型，然后通过微分同胚和输入变换将其分解为四个低阶子系统，并给出了其输出跟踪的二阶动态滑模控制器的设计方法。

The main products are Various parts of Electric Motor, Generator, Pump, Valve and Engineering machines.

主要产品为各种电机、发电机、泵、阀以及工程机械的零部件。

In order to adjusting plate electrization, some servo-motors replacing mechanism as actuator were installed in the gap of the plate cylinder.

在印版滚筒的空当安装伺服电机作为执行机构来代替机械部分的动作，以实现调整印版的电气化

In order to adjusting plate electrization,some servo-motors replacing mechanism as actuator were installed in the gap of the plate cylinder.

在印版滚筒的空当安装伺服电机作为执行机构来代替机械部分的动作，以实现调整印版的电气化；通过光电头自动检测套印误差，并将误差信息反馈给伺服放大器，构成闭环控制系统。

Through the description of mechanical structure, electromotor and sensors of the AMT, a whole controlling project is formed.

通过对电动型AMT机械结构部分、电机和传感器部分的描述，形成了一套完整的AMT控制方案。

In the fast moving machinery trolleys, the use of 2 or 3 motor-driven festoon carriers is necessary to move the big bundles or heavy festoon cable more smoothly.

在快速运行的机械台车中采用2或3个电机驱动的拖令载体对于使大的电缆束或沉重的拖令电缆更加平稳的移动来说是必要的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。