新版軟件添加了基于模型控制的可分析PID和模型化預(yù)測(cè)性控制。 2008年2月19日消息，國(guó)家儀器于當(dāng)日宣布推出NI LabVIEW 8.5控制設(shè)計(jì)和模擬單元，是LabVIEW圖形化系統(tǒng)設(shè)計(jì)平臺(tái)的擴(kuò)展版，可幫助工程師和科學(xué)家們分析開(kāi)環(huán)模型，設(shè)計(jì)閉環(huán)控制器，模塊系統(tǒng)、并創(chuàng)建實(shí)時(shí)執(zhí)行。此單元的最新版引進(jìn)了新設(shè)計(jì)，如用于改善系統(tǒng)閉環(huán)穩(wěn)定性的PID和多變化系統(tǒng)的模型預(yù)測(cè)控制。LabVIEW控制設(shè)計(jì)和模擬模塊還能對(duì)帶有新功能的LabVIEW MathScript進(jìn)行擴(kuò)展支持，這些新功能如：創(chuàng)建模塊、定義模塊如何連接和分析系統(tǒng)的穩(wěn)定性。 西班牙馬德里離岸和海軍工程公司SEAPLACE控制工程師Miguel Taboada 說(shuō)：“LabVIEW控制設(shè)計(jì)和模擬模塊能夠明顯地減少花費(fèi)在開(kāi)發(fā)抖動(dòng)加料容器上動(dòng)態(tài)位置的時(shí)間。此模塊使我們可以很容易地模擬我們不同的控制運(yùn)算法則和測(cè)試代碼，而不用使用任何硬件。我們能夠重新利用圖形代碼，創(chuàng)建模塊，將其配置到真的硬件中并監(jiān)測(cè)，所有一切設(shè)置僅需一天?！? LabVIEW控制設(shè)計(jì)和模擬模塊的節(jié)時(shí)性是可分析的PID性能。在過(guò)去，工程師和科學(xué)家們識(shí)別合適的PID控制器通過(guò)調(diào)整他們的控制器得到準(zhǔn)確的值?？煞治龅腜ID特征能為工程師和科學(xué)家們提供發(fā)現(xiàn)自動(dòng)獲得值的PID設(shè)置，使其方便地避免在設(shè)計(jì)時(shí)間和改善系統(tǒng)穩(wěn)定性方面的無(wú)望行為。 此模塊的新版本還包括模型預(yù)測(cè)控制（MPC），在工業(yè)中非常流行的計(jì)算法則，用于在復(fù)雜過(guò)程控制應(yīng)用中的多點(diǎn)輸入、多點(diǎn)輸出系統(tǒng)。工程師和科學(xué)家們可利用MPC的特征構(gòu)建控制器，在設(shè)置點(diǎn)確實(shí)發(fā)生前調(diào)整控制行動(dòng)。預(yù)測(cè)模塊行為結(jié)合傳統(tǒng)反饋幫助控制器，實(shí)現(xiàn)平滑調(diào)整，與最佳控制行為值接近。 蘇格蘭Glasgow Strathclyde大學(xué)工業(yè)控制中心的工業(yè)系統(tǒng)教授兼ISC公司的技術(shù)總管Michael Grimble說(shuō)：“模塊預(yù)測(cè)型控制對(duì)于行業(yè)來(lái)說(shuō)是非常用價(jià)值的，對(duì)于不熟悉編程的工程師不是很容易得到。通過(guò)在LabVIEW控制設(shè)計(jì)和模擬模塊中增加MPC功能，NI提供了帶有簡(jiǎn)單實(shí)時(shí)執(zhí)行界面的直覺(jué)性工具。此可以為工程師們帶來(lái)非常大的受益，如在汽車、航空、醫(yī)藥領(lǐng)域。預(yù)測(cè)行為是開(kāi)發(fā)高級(jí)控制的關(guān)鍵級(jí)別。” LabVIEW控制設(shè)計(jì)和模擬模塊可容易地與NI軟件工具整合使用，如LabVIEW Statechart Module、LabVIEW Real-Time Module、LabVIEW System Identification Toolkit及開(kāi)發(fā)兼容測(cè)量控制器的NI I/O. 更多信息請(qǐng)登錄：www.ni.com/embeddedcontrol [font=times]original text [/font] [font=times]National Instruments Introduces the LabVIEW 8.5 Control Design and Simulation Module [/font] [font=times][color=#708090]Latest Version of Software Adds Analytical PID and Model Predictive Control for Model-Based Control NEWS RELEASE – Feb. 19, 2008 – National Instruments today announced the release of the NI LabVIEW 8.5 Control Design and Simulation Module, an extension of the LabVIEW graphical system design platform that helps engineers and scientists analyze open-loop model behavior, design closed-loop controllers, simulate systems and create real-time implementations. The latest version of the module introduces new design features such as analytical proportional integral derivative （PID） for improving system closed-loop stability and model predictive control to multivariable systems. The LabVIEW Control Design and Simulation Module also offers expanded support of LabVIEW MathScript with the addition of 18 new .m file functions to simplify such tasks as creating models, defining how models are connected and analyzing system stability. “The LabVIEW Control Design and Simulation Module significantly reduced the time it took us to develop the dynamic positioning on a split hopper vessel,” said Miguel Taboada, control engineer with SEAPLACE, an offshore and naval engineering company in Madrid, Spain. “The module made it easy for us to simulate our different control algorithms and test the code without the use of any hardware. When we achieved the results we wanted in simulation, we were able to reuse the graphical code created with the module and deploy it to real hardware and debug it – all within a single day.” A new time-saving feature in the LabVIEW Control Design and Simulation Module is analytical PID capability. Historically, engineers and scientists have identified the proper PID controller gain values by experimentally tuning their controllers. The analytical PID feature provides engineers and scientists with functions to find sets of PID gain values automatically for a given system model, making it easy for them to avoid undesired behavior at design time and improve system stability. The latest version of the module also includes model predictive control （MPC）, a popular algorithm used in industry to control multiple input, multiple output （MIMO） systems in complex process control applications. Engineers and scientists can use the MPC feature to construct controllers that adjust the control action before a change in the output setpoint actually occurs. This ability to predict model behavior combined with traditional feedback helps the controller make smoother adjustments that are closer to the optimal control action values. “Model predictive control is a valuable technique for industry that may not be so accessible to engineers unfamiliar with text-based programming,” said Michael Grimble, technical director of ISC Ltd. and professor of industrial systems at the Industrial Control Centre at the University of Strathclyde in Glasgow, Scotland. “By adding MPC functionality in the LabVIEW Control Design and Simulation Module, National Instruments is providing a very intuitive tool with a simple real-time implementation interface. This should deliver tremendous benefits to engineers performing process control or machine control applications in industries such as automotive and aerospace, and even in academia where predicting model behavior is often a crucial step when developing advanced controls.” The LabVIEW Control Design and Simulation Module easily integrates with NI software tools such as the LabVIEW Statechart Module for event-based control design or simulation and the LabVIEW Real-Time Module for rapid control prototyping and hardware-in-the-loop applications as well as system deployment. Engineers and scientists also can combine the module with the LabVIEW System Identification Toolkit and NI I/O devices to develop reliable measurement-based controllers. Readers can visit www.ni.com/embeddedcontrol for more information on the LabVIEW Control Design and Simulation Module.[/color][/font]