相位滞后

In the method,the position of the bell-like optoelectronic pulse peak signal from a coordinator gyroscope was accurately measured,and the position was used as time reference to measure the phase.

该方法可准确检测从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置，并以其为时间基准点进行相位测量，同时判断被测2个信号之间的时间间隔以及超前与滞后关系。

It measures accurately the peak value of the bell-like optoelectronic pulse signal come from coordinator gyro rotor ,which is used for the time standard in phase measurement.

提出了一种新的相位测量方法，该方法准确检测了从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置，并以其为时间基准点进行相位测量，同时判断被测两信号之间的时间间隔以及超前、滞后关系，同时针对在现场中的干扰因素，提出了相应的解决措施。

It measures accurately the peak value of the bell-like optoelectronic pulse signal from coordinator gyro rotor , which is used for the time standard in phase measurement.

提出了一种相位测量方法，该方法可以准确检测从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置并以其为时间基准点进行相位测量，并可判断被测两信号之间的时间间隔以及超前滞后关系。

The state space forms of all these predictive PID control system are given, and their characteristic polynomial are derived by augmentation approach and Laplace expansion. At the same time, the performances of robust stability, close-loop response, and anti-disturbance of these control systems are compared with other control systems.

同时，给出了一阶加纯滞后对象、二阶加纯滞后对象、非最小相位加纯滞后对象和高阶滞后对象的预测PID控制算法，推导出了它们的状态空间形式，并通过状态增扩方法和Laplace展开方法，求出了系统的特征多项式。

However, phase lead may also improve accuracy, and phase lag may improve

确性，相位滞后补偿也可以提高系统的稳定性。

In terms of hardware bring forward the zero-crossing detection to compensate for the phase lag caused by filter.

硬件上通过提前过零检测来补偿加重滤波器带来的相位滞后；软件上加入判定过零点真伪的功能。。。

In terms of hardware, bring forward the zero-crossing detection to compensate for the phase lag caused by filter.

硬件上通过提前过零检测来补偿加重滤波器带来的相位滞后；软件上加入判断过零点真伪的功能，以及先检测过零点再切换后级逆变桥的方法有效避免错误过零点造成的锁相失败问题，达到了很好的效果。

Secondly, signal after filtered is discussed from several respects of time domain, frequency domain and phase lag. We can conclude practical range of each filter with respect to different applied condition.

从时域、频域和相位滞后等几方面对滤波处理后的信号进行了分析，得出了各种滤波法适用的范围以及在实际使用中应注意的问题。

The compensation scheme for uncancellable zeros is studied and the corresponding feedforward controllers based on the preview steps are proposed.

首先提出了给定带宽的零相位滞后离散模型，对不可抵销零点的补偿方法进行了研究，并按该模型设计了相应的利用未来信号的前馈控制器。

As the dynamics of the revolving stage and the phase-lag of Sample/Holder have a side effect on the performance of the system ,the problem should be considered in the design of controller.

由于转 台自身的动特性以及引入采样/保持器产生的相位滞后给系统特性带来的不利影响，因此控制器设计应对此给予考虑。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。