Through the introduction of vvvf theory and the control thought of plc , the mathematic model of test rigs is founded which is run under the mode of electronic simulation , which is the theory foundation for the realization of control system 通過介紹變頻調(diào)速理論和plc的控制思想,建立了試驗(yàn)臺(tái)在電模擬模式運(yùn)行下的數(shù)學(xué)模型,為控制系統(tǒng)的實(shí)現(xiàn)奠定了理論基礎(chǔ)。
The numerical simulation models for the three - dimensional wind field and concentration field are set up through solving the equations of atmospheric dynamic - thermodynamics and diffusion equation for a complicated terrain , which are verified by combining the practice of yunnan kaiyuan electric power plant 通過術(shù)解復(fù)雜地形上的大氣熱力- -動(dòng)力學(xué)方程組及擴(kuò)散方程,建立了三維的風(fēng)場(chǎng)、濃度場(chǎng)的數(shù)值模擬模式,并以云南開遠(yuǎn)電廠為例對(duì)模式進(jìn)行了驗(yàn)證。
In the planning of the hydroforming process , the paper analyzes a representative automobile part to build up the cae simulation model of tube bending , preforming , and hydroforming , and discusses the influence of different preform designs on the final shape of the tube 在管件液壓成形制程規(guī)劃方面,本文選取了一具有代表性的汽車結(jié)構(gòu)件進(jìn)行分析,由原始的彎管、預(yù)成形、到液壓成形皆建立了cae模擬模式,并探討不同的預(yù)成形設(shè)計(jì)方式對(duì)管件最終成形之影響。