The simulation results show that : the rational layout of mobile relay can effectively obtain gain; and the semi fixed power control scheme is more flexible than the fixed power scheme, which may support the completely dynamic power allocation. 仿真结果表明:合理布置移动中继才能有效的带来增益;移动中继半固定功率控制方案较固定功率方案更为灵活。为后面完全动态功率分配问题的研究做铺垫。
The working period of semi bridge inverter power source is distinguished into six stages. The voltage and current waves of devices including intermediate frequency transformer, power switch output rectifiers are given respectively at the eight different time period. 半桥式逆变焊接电源的一个完整工作周期分为6个阶段,以8个时段给出了不同阶段的功率开关管集电极电压、中频变压器一次侧电流和二次侧电压以及整流二极管电流的波形。
In recent years, advances in rare-earth permanent magnetic material, semi - conductor, power devices, micro-processor, converter design technique and control theory have made permanent magnet synchronous motor ( PMSM ) drives play a vital role in motion-control applications in the low-to-medium power range. 近年来,随着稀土永磁材料、电力电子器件、微处理器、变频器设计技术和控制理论的飞速发展,永磁同步电机在中、低容量的运动控制中得到了广泛应用。
Homomorphism and Congruence on Semi - ring of Formal Power Series 形式幂级数半环的同态与同余
Technical Features of Semi - direct-blow Coal Pulverizing System in Dagang Power Plant 大港电厂半直吹式制粉系统的技术特点分析