According to the characteristic of the sensor inertia, the dynamic prediction to improve the system dynamic precision is presented in this paper. With the recurrence calculation of time constant of the sensor, the sys...According to the characteristic of the sensor inertia, the dynamic prediction to improve the system dynamic precision is presented in this paper. With the recurrence calculation of time constant of the sensor, the system dynamic precision is greatly improved. The example using this method is given.展开更多
文摘铁磁共振测试是自旋电子学研究的重要手段,为实现简单高效的FMR测试,基于瑞士苏黎世仪器500k MFLI锁相放大器,搭建了微扰型宽频带共面波导式铁磁共振测试系统,并对坡莫合金等材料进行了测试.为了得到材料的真实性质,对影响实验结果的参量进行优化,在深入讨论了这些参量对实验结果的影响及其物理和数学机制后,得到准确铁磁共振测试结果的实验条件为:电磁铁定点增加模式下,锁相放大器的时间常量为100 ms,滤波阶数在2阶以上,微扰线圈驱动信号振幅为1~2 V,频率为33~200 Hz.
文摘According to the characteristic of the sensor inertia, the dynamic prediction to improve the system dynamic precision is presented in this paper. With the recurrence calculation of time constant of the sensor, the system dynamic precision is greatly improved. The example using this method is given.