The control scheme and operatingprinciple of a double closed-loop AC/DC power converter system are discussed by using physics.
从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。
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So the third chapter focuses on the measuring system. The operatingprinciple (Light extinction method), the factors which influence the result and the resolvent to avoid them are explained.
The paper introduced the operatingprinciple of the temperature measurement system based on USB interface, and described the hardware structures and software design of this system in detail.