使用 LabVIEW FPGA 模块开发可编程自动化控制器

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使用 LabVIEW FPGA 模块开发可编程自动化控制器外文文献及翻译.doc 本文介绍了使用 LabVIEW FPGA 模块开发可编程自动化控制器的概况。可编程自动化控制器（PACs）在工业控制市场上越来越受到认可，成为需要高度集成模拟和数字I/O、浮点处理和无缝连接到多个处理节点的应用的理想解决方案。国家仪器公司提供了多种由NI LabVIEW软件开发环境驱动的PAC解决方案。使用LabVIEW，可以使用附加软件，例如NI LabVIEW FPGA模块，为工业应用构建定制的I/O接口。通过LabVIEW FPGA模块和可重构I/O，用户可以利用FPGA来实现高速数据处理、低延迟控制以及应用需求的定制化。该文论述了如何使用LabVIEW FPGA模块开发自定义的自动化控制器，为工业应用提供了更高的灵活性和性能。

NI RIO Hardware for PACs

Historically, programming FPGAs has been limited to engineers who have in-depth

knowledge of VHDL or other low-level design tools, which require overcoming a very steep

learning curve. With the LabVIEW FPGA Module, NI has opened FPGA technology to a

broader set of engineers who can now define FPGA logic using LabVIEW graphical

development. Measurement and control engineers can focus primarily on their test and control

application, where their expertise lies, rather than the low-level semantics of transferring logic

into the cells of the chip. The LabVIEW FPGA Module model works because of the tight

integration between the LabVIEW FPGA Module and the commercial off-the-shelf (COTS)

hardware architecture of the FPGA and surrounding I/O components.

National Instruments PACs provide modular, off-the-shelf platforms for your industrial

control applications. With the implementation of RIO technology on PCI, PXI, and Compact

Vision System platforms and the introduction of RIO-based CompactRIO, engineers now

have the benefits of a COTS platform with the high-performance, flexibility, and

customization benefits of FPGAs at their disposal to build PACs. National Instruments PCI

and PXI R Series plug-in devices provide analog and digital data acquisition and control for

high-performance, user-configurable timing and synchronization, as well as onboard decision

making on a single device. Using these off-the-shelf devices, you can extend your NI PXI or

PCI industrial control system to include high-speed discrete and analog control, custom

sensor interfaces, and precise timing and control.

NI CompactRIO, a platform centered on RIO technology, provides a small, industrially

rugged, modular PAC platform that gives you high-performance I/O and unprecedented

flexibility in system timing. You can use NI CompactRIO to build an embedded system for

applications such as in-vehicle data acquisition, mobile NVH testing, and embedded machine

control systems. The rugged NI CompactRIO system is industrially rated and certified, and it

is designed for greater than 50 g of shock at a temperature range of -40 to 70 °C.

NI Compact Vision System is a rugged machine vision package that withstands the harsh

environments common in robotics, automated test, and industrial inspection systems. NI

CVS-145x devices offer unprecedented I/O capabilities and network connectivity for

distributed machine vision applications.NI CVS-145x systems use IEEE 1394 (FireWire)

technology, compatible with more than 40 cameras with a wide range of functionality,

performance, and price. NI CVS-1455 and NI CVS-1456 devices contain configurable

FPGAs so you can implement custom counters, timing, or motor control in your machine

vision application.

Building PACs with LabVIEW and the LabVIEW FPGA Module

With LabVIEW and the LabVIEW FPGA Module, you add significant flexibility and

customization to your industrial control hardware. Because many PACs are already

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