【正文】 我莫大的鼓勵和支持，在此謹向姜老師致以誠摯的謝意和崇高的敬意。同時，感謝在整個畢業(yè)設(shè)計期間和我密切合作的同學(xué)，和曾經(jīng)在各個方面給予過我?guī)椭幕锇閭?，在此，我再一次真誠地向幫助過我的老師和同學(xué)表示感謝！參考文獻[1]. 崔葛謹 ，2006[2]. 楊曉慧 楊永鍵 ，2007[3]. Wayne Wolf著. 閆敬文，2005[4]. 羅朝霞 高書莉 ，2005[5]. 樊昌信 ，2006[6]. ，2004[7]. 焦素敏 ，2004[8]. 譚會生、2006[9]. ，2003[10].劉君 常明 （VHDL），2007[11].開軍 ，2006[12].(數(shù)字部分)第四版[M].北京:高等教育出版社，2000[13].，1995[14].(第四版)[M].北京:高等教育出版社，1998附 錄1：英文文獻Building Programmable Automation Controllers with LabVIEW FPGAOverviewProgrammable Automation Controllers (PACs) are gaining acceptance within the industrial control market as the ideal solution for applications that require highly integrated analog and digital I/O, floatingpoint processing, and seamless connectivity to multiple processing nodes. National Instruments offers a variety of PAC solutions powered by one mon software development environment, NI LabVIEW. With LabVIEW, you can build custom I/O interfaces for industrial applications using addon software, such as the NI LabVIEW FPGA Module. With the LabVIEW FPGA Module and reconfigurable I/O (RIO) hardware, National Instruments delivers an intuitive, accessible solution for incorporating the flexibility and customizability of FPGA technology into industrial PAC systems. You can define the logic embedded in FPGA chips across the family of RIO hardware targets without knowing lowlevel hardware description languages (HDLs) or boardlevel hardware design details, as well as quickly define hardware for ultrahighspeed control, customized timing and synchronization, lowlevel signal processing, and custom I/O with analog, digital, and counters within a single device. You also can integrate your custom NI RIO hardware with image acquisition and analysis, motion control, and industrial protocols, such as CAN and RS232, to rapidly prototype and implement a plete PAC system.Table of Contents1. Introduction 2. NI RIO Hardware for PACs 3. Building PACs with LabVIEW and the LabVIEW FPGA Module 4. FPGA Development Flow 5. Using NI SoftMotion to Create Custom Motion Controllers 6. Applications 7. Conclusion Introduction You can use graphical programming in LabVIEW and the LabVIEW FPGA Module to configure the FPGA (fieldprogrammable gate array) on NI RIO devices. RIO technology, the merging of LabVIEW graphical programming with FPGAs on NI RIO hardware, provides a flexible platform for creating sophisticated measurement and control systems that you could previously create only with customdesigned hardware.An FPGA is a chip that consists of many unconfigured logic gates. Unlike the fixed, vendordefined functionality of an ASIC (applicationspecific integrated circuit) chip, you can configure and reconfigure the logic on FPGAs for your specific application. FPGAs are used in applications where either the cost of developing and fabricating an ASIC is prohibitive, or the hardware must be reconfigured after being placed into service. The flexible, softwareprogrammable architecture of FPGAs offer benefits such as highperformance execution of custom algorithms, precise timing and synchronization, rapid decision making, and simultaneous execution of parallel tasks. Today, FPGAs appear in such devices as instruments, consumer electronics, automobiles, aircraft, copy machines, and applicationspecific puter hardware. While FPGAs are often used in industrial control products, FPGA functionality has not previously been made accessible to industrial control engineers. Defining FPGAs has historically required expertise using HDL programming or plex design tools used more by hardware design engineers than by control engineers.With the LabVIEW FPGA Module and NI RIO hardware, you now can use LabVIEW, a highlevel graphical development environment designed specifically for measurement and control applications, to create PACs that have the customization, flexibility, and highperformance of FPGAs. Because the LabVIEW FPGA Module configures custom circuitry in hardware, your system can process and generate synchronized analog and digital signals rapidly and deterministically. Figure 1 illustrates many of the NI RIO devices that you can configure using the LabVIEW FPGA Module.Figure 1. LabVIEW FPGA VI Block Diagram and RIO Hardware Platforms NI RIO Hardware for PACs Historically, programming FPGAs has been limited to engineers who have indepth knowledge of VHDL or other lowlevel design tools, which require overing 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 lowlevel 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 mercial offtheshelf (COTS) hardware architecture of the FPGA and surrounding I/O ponents.National Instruments PACs provide modular, offtheshelf platforms for your industrial control applications. With the implementation of RIO technology on PCI, PXI, and Compact Vision System platforms and the introduction of RIObased CompactRIO, engineers now have the benefits of a COTS platform with the highperformance, flexibility, and customization benefits of FPGAs at their disposal to build PACs. National Instruments PCI and PXI R Series plugin devices provide analog and digital data acquisition and control for highperformance, userconfigurable timing and synchronization, as well as onboard decision making on a single device. Using these offtheshelf devices, you can extend your NI PXI or PCI industrial control system to include highspeed 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,