脈沖寬度波動 的英文怎麼說
中文拼音 [màichōngkuāndùbōdòng]
脈沖寬度波動
英文
pulse duration fluctuation-
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焊機控制系統的研製,詳細闡述了總體方案的制定、硬體研製及軟體的編寫與調試,採用變結構、離散型pid + bang - bang復合控制演算法、實時調節輸出pwm信號的脈沖寬度,驅動控制用於逆變的大功率開關管igbt的開通與關斷時間,獲得逆變焊機平外特性。The system had auto startup and stop function by software. the dsp based motor control system had lower current harmonic, more efficient use of supply voltage than spwm, less switch loss. on the other hand, this system make a lower noise for the pwm modulation. frequency is up to 20khz
本系統實現了電機的軟啟動、軟關斷功能,電機電流的諧波失真較少,電壓利用率比常規的正弦波脈沖寬度調制( spwm )有了較大的提高,器件的開關損耗也得到了明顯的減少。
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