As to the deficiencies of UPS base on three-phase full-bridge inverter, a three-phase half-bridge inverter of on-Line UPS controlled by TMS320LF2407 is proposed.
针对基于三相全桥逆变器的不间断电压（UPS）缺点，提出了一种用TMS320LF2407控制的基于三相半桥逆变器的在线式UPS。
The paper base on the engineering, analyzed the mechanical perforce of the high-pier curved bridge, and summarized the advanced replacing curved by straight line formula for high-pier curved bridge.
本文从工程实践出发，分析了高墩小半径曲线梁桥的力学特性，提出了高墩曲线梁桥以直代曲的判别公式。
The paper base on the engineering, analyzed the mechanical perforce of the high-pier curved bridge, and summarized the advanced replacing curved by straight line formula for high-pier curved bridge.
本文从工程实践出发，分析了高墩小半径曲线梁桥的力学特性，提出了高墩曲线梁桥以直代曲的判别公式。
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