theory n. 1.理論,學(xué)理,原理。 2.學(xué)說,論說 (opp. hypothesis)。 3.推測,揣度。 4.〔口語〕見解,意見。 the theory of two points 兩點(diǎn)論。 Darwin's theory of evolution 達(dá)爾文的進(jìn)化論。 theory of equations 【數(shù)學(xué)】方程論。 theory of everything 【物理學(xué)】(把相對論、量子論和宇宙大爆炸理論都包括在內(nèi)的)萬用理論。 theory of relativity 【物理學(xué)】相對論。 the atomic theory 原子說。 Our scheme is good both in theory and in practice. 我們的方案在理論上和實(shí)施上都是好的。 combine [separate] theory with [from] practice 理論結(jié)合[脫離]實(shí)際。 My theory is that we must bring new blood into the Institute through appointment of younger men to important positions. 我的意見是我們學(xué)院應(yīng)該通過重用年輕一些的人來注入新的血液。 theory of games 博弈論,對策論,權(quán)衡利弊得失的形勢分析。
After the characteristics and development of excitation system of synchronous generators are analyzed , micro - computer regulating theory of excitation system is discussed , this dissertation presents a scheme of designing excitation system with programmable computer controller ( pcc ) and igbt , and pcc igbt excitation system of turbine generator is also developed according to the above mentioned 本文在全面分析同步發(fā)電機(jī)微機(jī)勵(lì)磁裝置特點(diǎn)及發(fā)展現(xiàn)狀的基礎(chǔ)上,論述了微機(jī)勵(lì)磁調(diào)節(jié)的原理,提出基于可編程計(jì)算機(jī)控制器( pcc )控制的絕緣柵雙極晶體管( igbt )勵(lì)磁系統(tǒng)的設(shè)計(jì)方法,并在此基礎(chǔ)上開發(fā)了基于pcc控制的水輪發(fā)電機(jī)igbt勵(lì)磁系統(tǒng)。
With the larger and larger scale of power system , the problem that the traditional control theories of excitation controllers of turbine generator are not competent as before appears , however , the developing intelligent control ( ic ) theory and updated optimization theory supplies some solutions to this problem . at the beginning of this dissertation , the actuality and trend of the control scheme of excitation control system of turbine generator and soft - compute theory are stated 水輪發(fā)電機(jī)勵(lì)磁控制器是電力系統(tǒng)中十分重要的控制設(shè)備,對保證電能質(zhì)量起到至關(guān)重要的作用。日益復(fù)雜的電力系統(tǒng)使得傳統(tǒng)的勵(lì)磁控制方式已不能滿足其控制要求,而蓬勃發(fā)展的智能控制理論和新型優(yōu)化算法為解決這一問題提供了出路。