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| 目前主流的伺服驅動器均采用數(shù)字信號處理器（DSP）作為控制核心，可以實現(xiàn)比較復雜的控制算法，實現(xiàn)數(shù)字化、網(wǎng)絡化和智能化。功率器件普遍采用以智能功率模塊（IPM）為核心設計的驅動電路,IPM內(nèi)部集成了驅動電路,同時具有過電壓、過電流、過熱、欠壓等故障檢測保護電路,在主回路中還加入軟啟動電路,以減小啟動過程對驅動器的沖擊。功率驅動單先通過三相全橋整流電路對輸入的三相電或者市電進行整流，得到相應的直流電。經(jīng)過整流好的三相電或市電，再通過三相正弦PWM電壓型逆變器變頻來驅動三相永磁式同步交流伺服電機。功率驅動單元的整個過程可以簡單的說就是AC-DC-AC的過程。整流單元（AC-DC）主要的拓撲電路是三相全橋不控整流電路。 |
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