论文标题
基于电场调节和旋转异构电极的光电压传感器的设计
Design of optical voltage sensor based on electric field regulation and rotating isomerism electrode
论文作者
论文摘要
温度漂移，应力双折射和低频振动导致光电传感器（OVS）输出的随机性和波动。为了解决该问题，本研究借助高速旋转电极采用锁定放大器技术来实现电场调制。该技术可以将测量的信号频带从接近50 Hz移动到几公里Hz，以使输出信号避免了低频温度漂移，压力双折射和振动的干扰，从而导致稳定性和可靠性更高。电声耦合波理论和静态电场有限元方法用于研究调制波的形状。模拟结果证明，锁定技术能够防止大型步骤信号干扰的测量电压信号并恢复完美的原始信号。虽然采样率降低到调制频率的值。
Temperature drift, stress birefringence and low frequency vibration lead to the randomness and fluctuation of the output of optical voltage sensor(OVS). In order to solve the problem, this study adopts the lock-in amplifier technology with the aid of a high-speed rotating electrode to realize electric field modulation. This technology could shift the measured signal frequency band from near 50 Hz moved to several kilometer Hz, so as to make the output signal avoid the interference from low-frequency temperature drift, stress birefringence and vibration, leading to higher stability and reliability. The electro-optic coupling wave theory and static electric field finite element method are utilized to investigate the shape of modulation wave. The simulation results proves that lock-in technology is able to prevent the measured voltage signal from the large step signal interference and restore the perfect original signal. While the sample rate is decreased to the value of the modulation frequency.
