旋转挡板 meaning in English

rotary baffle
turning valve

Applying virtual instrumentation technology , the author designed the hardware and software of the blower performance testing system . in the hand of hardware , testing data is acquired automatically according to press - difference sensor , press sensor and torch sensor ; blower speed is adjusted automatically according to frequency conversion of transducer and working state is auto controlled according to rotating baffle controlled by the step motor
硬件上采用压差传感器、压力传感器和扭矩传感器检测各试验数据，实现了试验数据的自动采集；利用变频调速技术控制变频调速器输出信号的频率，实现了风机转速的自动调节；通过设置旋转挡板装置并用步进电机控制其旋转角度实现了风机运行工况的自动控制。