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(biāo)簽： motors Servomotors servomotors available
上傳時間： 2014-08-10
上傳用戶：源碼3
This popular tutorial introduction to standard C++ has been completely updated, reorganized, and rewritten to help programmers learn the language faster and use it in a more modern, effective way.Just as C++ has evolved since the last edition, so has the authors approach to teaching it.
標(biāo)簽： introduction reorganized completely tutorial
上傳時間： 2013-12-05
上傳用戶：jhksyghr
This example program is the source code for the FT232BM Test Application from our Utilities page. It can be used to test the handshaking lines on FT232BM based RS232/RS485/RS422 designs. This program can also be used for programming the external EEPROM over USB in a manufacturing environment. The test features require the test cable shown on ST_232_245.pdf to be connected. Our D2XX direct drivers should be installed for this application. The code can be modified to fit your requirements. To download the application source code , click here. To download the test cable specification, click here.
標(biāo)簽： Application Utilities the example
上傳時間： 2013-12-09
上傳用戶：aa17807091
QuickSteps books are recipe books for computer users. They answer the question 揌ow do I...??by providing a quick set of steps to accomplish the most common tasks with a particular program. The sets of steps are the central focus of the book. Sidebar QuickSteps provide information on how to do quickly many small functions or tasks that are in support of the primary functions. Sidebar QuickFacts supply information that you need to know about a subject. Notes, Tips, and Cautions augment the steps, but they are presented in a separate column to not interrupt the fl ow. Brief introductions are present, but there is minimal narrative otherwise. Many illustrations and fi gures, a number with callouts, are also included where they support the steps.
標(biāo)簽： books QuickSteps computer question
上傳時間： 2013-12-11
上傳用戶：ljt101007
Example script to read CF-compliant structured grid NetCDF data into Matlab using the NetCDF-Java libraryI m using "toolsUI.jar" which is advertised as "a nice fat jar file containing everything in a single jar"
標(biāo)簽： CF-compliant NetCDF-Jav structured Example
上傳時間： 2017-06-30
上傳用戶：gmh1314
High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the USB signaling requirements. Today s gate arrays operate comfortably between 30 and 60 MHz. With USB 2.0 signaling running at hundreds of MHz, the existing design methodology must change.
標(biāo)簽： technology 2.0 USB designed
上傳時間： 2014-01-02
上傳用戶：二驅(qū)蚊器
High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the USB signaling requirements. Today s gate arrays operate comfortably between 30 and 60 MHz. With USB 2.0 signaling running at hundreds of MHz, the existing design methodology must change.
標(biāo)簽： technology 2.0 USB designed
上傳時間： 2017-07-05
上傳用戶：zhoujunzhen
this file has codes that describes how to ccmpute the signal spectrum , the power spectrum, how to calculate the autocorrelation sequence of a signal, how to calculate the autoregressive coeffecients of a signal,and how to reduce the noisy elements in a speech sample.
標(biāo)簽： spectrum describes how the
上傳時間： 2017-07-23
上傳用戶：金宜
The C++ version of the IQmath librray requires the C header file and is built on top of the C functions and definitions. See "Building A Project" section of this Read Me file on how to include the above files in a user C++ program/project.
標(biāo)簽： the requires version librray
上傳時間： 2013-12-18
上傳用戶：yxgi5
The C++ version of the IQmath librray requires the C header file and is built on top of the C functions and definitions. See "Building A Project" section of this Read Me file on how to include the above files in a user C++ program/project.
標(biāo)簽： the requires version librray
上傳時間： 2017-07-26
上傳用戶：杜瑩12345
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