Double closed loop system has a little overshoot and short transition time, whose performance is better than single closed loop system.

双闭环转速控制系统超调小、过渡时间短，性能要好于单闭环系统。

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The inverter uses full bridge topology and SPWM technique. The inverter voltage is controlled by single closed loop feedback based on PID.

逆变器采用全桥型的拓扑结构，利用了SPWM逆变技术，逆变电压控制通过简单的单环反馈实现，控制方法采用PID算法。

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With its closed loop of common ETL processes and a robust BI infrastructure in place, BCBST enabled financial performance management by adding just one column to a single table.

凭借着其自身的通用ETL流程闭环和一个放置到位的健壮的BI基础架构，BCBST启用了财务性能管理，只需要向单个表格中添加一列。

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