impulse n. 1.沖動(dòng);【物理學(xué)】沖量;推進(jìn)力;脈沖,【醫(yī)學(xué)】沖動(dòng),搏動(dòng)。 2.鼓舞,刺激;一時(shí)高興,興奮。 a man of impulse感情用事的人。 act from impulse憑一時(shí)沖動(dòng)行事。 be seized with a sudden impulse to do sth. 一時(shí)情不自禁地做某事。 feel an irresistible impulse覺(jué)得情不自禁。 give an impulse to 刺激,促進(jìn)。 on the impulse of the moment 由一時(shí)高興。 vt. 推動(dòng)。
In this paper , researching and producing on current waveform control system of inverter carbon dioxide welding machine is given . the overall plan , the design of hardware structure , the programming and debugging of software is described in detail . the bang - bang and alterable structure discrete pid synthetic control algorithm are used to modulate the width of pwm signal in real time , to acquire the fiat character by driving and controlling the opening and shutting time of igbt , the technology of " double impulse " is adopted to realize electric current waveform control 本文介紹了逆變波形控制co _ 2焊機(jī)控制系統(tǒng)的研制,詳細(xì)闡述了總體方案的制定、硬件研制及軟件的編寫(xiě)與調(diào)試,采用變結(jié)構(gòu)、離散型pid + bang - bang復(fù)合控制算法、實(shí)時(shí)調(diào)節(jié)輸出pwm信號(hào)的脈沖寬度,驅(qū)動(dòng)控制用于逆變的大功率開(kāi)關(guān)管igbt的開(kāi)通與關(guān)斷時(shí)間,獲得逆變焊機(jī)平外特性。