algebra with polynomial identities,PI-algebra

Some characterisations of graded artin simple rings and the conditions for graded artin simple rings to be artin simple rings are obtained, The definition of graded PI-algebras and the graded version of kaplansky theorem on PI-theory are given.

定义并讨论了分次PI-代数，给出了Kaplansky定理的分次形式。

Report form solution of SIS based on PI database;

基于PI数据库的SIS报表解决方案

Development of PI database-based on-line monitor and alarm systems for interface power flow

基于PI数据库的断面潮流在线监测及告警系统的实现

The overall structure,construction goal and basic functions of WAMS based on PI database in Chongqing Power Grid were introduced.

介绍了重庆电网基于PI数据库的实时动态监测系统(WAMS)的总体结构、建设目标和基本功能。

A systemized optimization method for PI parameters of HVDC controller is proposed.

首先根据Bode图求出满足系统稳定性要求的PI参数范围;再对该参数范围按一定步长进行划分,得到有限组PI参数以构成PI参数寻优的样本集;对应每一个样本参数仿真计算控制器的阶跃响应, 并按时间乘绝对误差积分(integral of time multiplied by the absolute value of error,ITAE)准则计算目标函数值;取对应 ITAE目标函数值最小的样本参数为最优PI参数。

The system not only improve the high-frequency switching problem brought by conventional hysteresis control strategy,but also adopts load current feed-forward control to make the system has much lower dependence on the PI parameters of the outer voltage regulator than conventional hysteresis current control PWM rectifiers.

该系统不仅改进了传统滞环控制策略带来的高开关频率的问题,更引入了负载电流前馈控制,使得系统对于外环的PI参数有着较传统滞环PWM整流器更低的依赖性,在三相电网不平衡的条件下也表现更好的运行特性。

Research on the Supervisory Informaiton System Based on PI Database;

基于PI数据库的SIS系统的研究

Application of PI system in Hydropower Plant

PI数据库系统在水电厂的应用分析

Producing Information Data Integration and Supervisory Platform Design for SIS Based of PI Database;

基于PI数据库的SIS系统的生产信息数据集成及监控平台的设计

Design and Development of Power Supply Enterprise Real-time Data Center System Based on PI Database

基于PI数据库的供电企业实时数据中心的设计与实现

Development of PI database-based on-line monitor and alarm systems for interface power flow

基于PI数据库的断面潮流在线监测及告警系统的实现

Application of Real-time Database PI in Enterprise MES System

实时数据库PI在企业MES系统中的应用

The Application of PI Real-Time Database for Power Enterprises Informatization;

PI实时数据库在发电企业信息化中的应用

Study of the Fault Diagnosis in Power Plant Based on PI Real-time Database;

基于PI实时数据库的电厂故障诊断系统研究

Research on Mutual Model Based on PI Real-time Database and Matlab

PI实时数据库与Matlab交互式开发模型研究

An industrially relatively well proven PI real-time database was chosen to serve as the supporting platform of Zhuzhou Power Plant′s SIS system, and has now been put into commercial operation following on-site acceptance tests.

株州电厂选用了工业上应用比较成熟的PI实时数据库系统作为该厂SIS系统的支撑平台。

A Study of Communication Substation for Integrating Substation Data into PI System;

厂站数据接入PI系统通信子站的研究

Base de donnees regionales maritimes BDRM

区域海洋数据库(数据库)

Design and implementation of SCADA data filtering software based on PI API

基于PI API的SCADA数据滤波软件的设计与实现

PI-based Real-time Data Analysis System in Coal Chemical Enterprises

煤化工企业中基于PI的实时数据分析器

Internet Archives DatabaseIAD

Ｉｎｔｅｒｎｅｔ档案数据库

Database management in the platform of LabWindows/CVI

LabWindows/CVI数据库管理

The Database Wizard cannot create the table in the this database.

“数据库向导”无法在此数据库中创建表。

Displays the current database in the Database Designer

在数据库设计器中显示当前数据库