Servomotors are available as AC or DC motors. Early servomotors were generally DC motors because the only type of control for large currents was through SCRs for many years. As transistors became capable of controlling larger currents and switching the large currents at higher frequencies, the AC servomotor became used more often. Early servomotors were specifically designed for servo amplifiers. Today a class of motors is designed for applica-tions that may use a servo amplifier or a variable-frequency controller, which means that a motor may be used in a servo system in one application, and used in a variable-frequency drive in another application. Some companies also call any closed-loop system that does not use a stepper motor a servo system, so it is possible for a simple AC induction motor that is connected to a velocity controller to be called a servomotor.
標簽： motors Servomotors servomotors available
上傳時間： 2014-08-10
上傳用戶：源碼3
CRFsuite is a very fast implmentation of the Conditional Random Fields (CRF) algorithm. It handles tens of thousands sentences in merely one second. In comparison to CRF++, CRFSuite yields substantially better efficiency performance
標簽： implmentation Conditional algorithm CRFsuite
上傳時間： 2013-12-19
上傳用戶：gououo
C is a general-purpose programming language. It has been closely associated with the UNIX operating system where it was developed, since both the system and most of the programs that run on it are written in C. The language, however, is not tied to any one operating system or machine and although it has been called a ``system programming language because it is useful for writing compilers and operating systems, it has been used equally well to write major programs in many different domains.
標簽： general-purpose programming associated operating
上傳時間： 2014-01-14
上傳用戶：我干你啊
This file is distributed in the hope that it will be useful, but WITHOUT WARRANTY OF ANY KIND. Author(s): Ole Saether DESCRIPTION: This example should be used together with ex2a-tx433.asm. One nRF9E5 evaluation board (receiver) should be programmed with the hex-file generated from assembling this file and the other evaluation board (transmitter) programmed with the hex-file generated from assembling ex2a-tx433.asm. All switches on the DIP-swith S206 on the receiver must be set to the "on" position and all switches on the DIP-swith S205 on the transmitter must be set to the "on" position. When one of the switched SW1-SW4 on the transmitter is pressed the corresponding LED on the receiver is turned on. The functionality is the same as in ex2c-rx.c.
標簽： distributed WARRANTY WITHOUT useful
上傳時間： 2017-05-17
上傳用戶：xieguodong1234
Traveling Salesperson Problem Our branch-and-strategy splits a branch and bound solution into two groups: one group including a particular arc and the other excluding this arc. 1.Each splitting incurs a lower bound and we shall traverse the searching tree with the "lower" lower bound. 2.If a constant subtracted from any row or any column of the cost matrix, an optimal solution does not change.
標簽： branch-and-strategy Salesperson Traveling solution
上傳時間： 2013-12-29
上傳用戶：璇珠官人
Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone in 1854,but named after his friend Baron Playfair Playfair Key Matrix 1.a 5X5 matrix of letters based on a keyword 2.fill in letters of keyword (sans duplicates) 3.fill rest of matrix with other letters Encrypting and Decrypting -plaintext is encrypted two letters at a time 1. if a pair is a repeated letter, insert filler like X’ 2. if both letters fall in the same row, replace each with letter to right (wrapping back to start from end) 3. if both letters fall in the same column, replace each with the letter below it (again wrapping to top from bottom) 4. otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair
標簽： monoalphabetic Playfair provides security
上傳時間： 2017-05-25
上傳用戶：變形金剛
matlab程序，演示了如何畫出系統時域和頻域的step相應
上傳時間： 2013-12-17
上傳用戶：66666
NEC-SIRCS-JAPAN-RC5-SAMSUNG compatible, multiprotocol infrared remote control. Replaces up to 6 existing remote controls into one. With manual learning function, LED display and/or LCD. 2V6-3V2, low power (sleep function) More protocols will be added later if needed (DENON, DAEWOO, MOTOROLA, RECS80.)
標簽： NEC-SIRCS-JAPAN-RC multiprotocol compatible Replaces
上傳時間： 2017-05-27
上傳用戶：3到15
C Algorithms for Real-Time DSP Chapters 1 and 2 cover the basic principles of digital signal processing and C programming. Readers familiar with these topics may wish to skip one or both chapters.
標簽： Algorithms principles Real-Time Chapters
上傳時間： 2017-06-01
上傳用戶：AbuGe
C Algorithms for Real-Time DSP Chapter 4 covers the basic real-time filtering techniques which are the cornerstone of one-dimensional real-time digital signal processing.
標簽： Algorithms techniques Real-Time filtering
上傳時間： 2013-12-11
上傳用戶：lhc9102
