调速

In this paper, MODBUS bus in VVVF control system applied constant pressure in the water supply system was discussed.

本文对MODBUS总线在变频调速控制系统在应用于恒压供水系统进行了探讨。

To resolve this problem, I have designed a constant pressure water supply system using PLC and VVVF.

为了解决这个问题，于是我设计了一套全自动管网叠压变频调速供水设备。

The digital vector control system of permanent magnet synchronous motor based on DSP is researched in this thesis.

本文以永磁同步电机为控制对象，设计实现了基于DSP的数字化矢量变频调速系统。

Based on vector control theory, a fully digital variable speed system is designed.

介绍一套基于矢量控制理论设计的全数字变频调速系统。

Also, the author explains the method of getting the signals of musical rhythms simulating human ears and the process of using the signals to control the timing and the shape of the fountain via the frequent converser.

本文介绍一种用变频器调速控制的音乐喷泉系统，这种音乐喷泉的造型是用音乐节奏的变化来控制的，随着音乐节奏强弱的变化喷泉的造型起伏变幻，具有十分明显的音乐节奏感。

Products include PLC, Touch Panel, VVVF, AC servo system, power distribution control, numerical control systems, but also to the field of enterprise customers tip of technical services, technical engineering staff of the PLC, Touch Panel, inverter, servo , step, such as automation and control systems, has a wealth of practical experience in engineering, a lot of companies have successfully carried out for the system design and technical transformation projects, covering machine building, metallurgy, textile, printing and dyeing, paper making and printing, food processing, water treatment and other industries to provide better and more efficient services.

产品包括PLC、触摸屏、变频调速器、交流伺服系统、配电控制产品、数控系统，同时也向该领域企业客户提供先端的技术服务，公司技术工程人员对PLC、触摸屏、变频器、伺服、步进等自动化控制系统等，有着丰富的实际工程经验，先后为很多公司成功进行系统设计和技术改造等项目，范围涉及机械制造、冶金、纺织、印染、造纸及印刷、食品加工、水处理等行业，提供更好、更快的服务。

Basing on the speed control and reversing control in hardware control circuit, software control program realized the rectilinear motion and simple curvilinear motion of an omni-directional mobile robot.

软件控制程序在硬件控制电路实现的调速控制和换向控制的基础上，通过编程实现全向轮驱动小车的直线运动和简单的曲线运动。

By considering torque characteristics of variable-frequency motors and mesh stiffness as well as backlash nonlinearity in gear transmission,a dynamics model for the cutting system of shield tunneling machine with redundant drives was established. The fluctuation characteristics of torque loads and dynamic cutterhead driving torque in composite strata were analyzed.

复合地层掘进扭矩载荷突变是造成盾构机掘进过程中堵转停机的直接原因，考虑盾构机刀盘驱动变频调速电机特性、转矩传递过程中齿轮啮合刚度及齿侧间隙等非线性因素，建立冗余驱动的盾构机刀盘切削系统机电耦合动力学模型；针对典型复合地层地质条件，对盾构机在上软下硬地层掘进过程中刀盘驱动转矩动态特性进行仿真分析。

This paper is mainly talk about DC speed regulation.

本文主要研究的是直流调速系统。

Therefore the establishment of the model of DEH system and the identification of its parameters are significant for the steady analysis of the electric network.

所以调速系统模型的建立和参数的正确辨识对于电网的稳定分析具有重要意义。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。