根据半球谐振陀螺的动力学方程和闭环反馈理论，推导出离散激励器和信号检测器在壳体环向的角度配置；
According to the dynamical equation and the theory of closed loop feedback, the angle scheme of signal detector and discrete exciter in circumferential direction is deduced.
每个拆卷机上，膜都是包裹在负载单元式卷轴上的，这样就能监测膜的张力，为电自动的闭环张力控制器提供反馈的信号。
At each unwinder the film wraps around a load-cell-mounted roller, which monitors the film tension, providing the feedback signal for electronic automatic closed-loop tension control.
对传感器信号处理采用的二次谐波反馈电路，电路为闭环系统。
Adopting the reactive circuit of twice harmonic to process the sensor signal, the system is closed loop.
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