主機氣缸油注油器說明書，Alpha Lubricator System Operation (ALCU) manual MC Engines。
標簽： Lubricator Operation Engines System
上傳時間： 2013-10-17
上傳用戶：ynzfm
為了提高直接轉矩控制（DTC）系統(tǒng)定子磁鏈估計精度，降低電流、電壓測量的隨機誤差，提出了一種基于擴展卡爾曼濾波（EKF）實現(xiàn)異步電機轉子位置和速度估計的方法。擴展卡爾曼濾波器是建立在基于旋轉坐標系下由定子電流、電壓、轉子轉速和其它電機參量所構成的電機模型上，將定子電流、定子磁鏈、轉速和轉子角位置作為狀態(tài)變量，定子電壓為輸入變量，定子電流為輸出變量，通過對磁鏈和轉速的閉環(huán)控制提高定子磁鏈的估計精度，實現(xiàn)了異步電機的無速度傳感器直接轉矩控制策略，仿真結果驗證了該方法的可行性,提高了直接轉矩的控制性能。 Abstract: In order to improve the Direct Torque Control（DTC） system of stator flux estimation accuracy and reduce the current， voltage measurement of random error， a novel method to estimate the speed and rotor position of asynchronous motor based on extended Kalman filter was introduced. EKF was based on d-p axis motor and other motor parameters （state vector: stator current， stator flux linkage， rotor angular speed and position； input: stator voltage； output: staror current). EKF was designed for stator flux and rotor speed estimation in close-loop control. It can improve the estimated accuracy of stator flux. It is possible to estimate the speed and rotor position and implement asynchronous motor drives without position and speed sensors. The simulation results show it is efficient and improves the control performance.
標簽： EKF 異步電機 直接轉矩 控制系統(tǒng)
上傳時間： 2015-01-02
上傳用戶：qingdou
LabVIEW+For+ARM+Lee
上傳時間： 2013-10-26
上傳用戶：franktu
Abstract: Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature rangewith accuracies of ±0.3°C or better, performed with reasonable cost and often with low power consumption. This article explains how platinumresistance temperature detectors (PRTDs) can perform measurements over wide temperature ranges of -200°C to +850°C, with absolute accuracyand repeatability better than ±0.3°C, when used with modern processors capable of resolving nonlinear mathematical equation quickly and costeffectively. This article is the second installment of a series on PRTDs. For the first installment, please read application note 4875, "High-Accuracy Temperature Measurements Call for Platinum Resistance Temperature Detectors (PRTDs) and Precision Delta-Sigma ADCs."
上傳時間： 2013-11-06
上傳用戶：WMC_geophy
Abstract: This application note explains how to design an intelligent lighting controller that senses and measures the ambient lightlevel with an ambient light sensor (ALS). Equipped with a real-time clock (RTC), the controller also knows when to turn lighting on oroff at specified times. The system presented in this document can be used to control all luminaires that are mains-supply operated.Controller software is also provided in hex format.
標簽： 智能照明控制器 測量 環(huán)境光線
上傳時間： 2013-11-18
上傳用戶：AbuGe
Abstract: How can an interface change a happy face to a sad face? Engineers have happy faces when an interface works properly.Sad faces indicate failure somewhere. Because interfaces between microprocessors and ICs are simple—even easy—they are oftenignored until interface failure causes sad faces all around. In this article, we discuss a common SPI error that can be almostimpossible to find in a large system. Links to interface tutorial information are provided for complete information. Noise as a systemissue and ICs to minimize its effects are also described.
上傳時間： 2013-11-18
上傳用戶：zgz317
NTFS(NT文件系統(tǒng)) for Linux的一個實現(xiàn)源碼
標簽： Linux NTFS for 文件系統(tǒng)
上傳時間： 2015-01-04
上傳用戶：Divine
站長寫的使用OCI開發(fā)Oracle程序的通用函數(shù)庫for unix
上傳時間： 2015-01-04
上傳用戶：363186
KeyPro加密狗模擬器 v4.20 for DOS
上傳時間： 2013-12-12
上傳用戶：lacsx
數(shù)值算法庫for Windows，含有很多數(shù)值算法
上傳時間： 2015-01-04
上傳用戶：fnhhs
