系统误差

Present the research results about servo control error characteristics and a practical rule and method for error parameter distribution.

研究了APT伺服控制的误差特性，并提出了"针对伺服控制系统的误差分配准则和具体方法"。

In order to adjusting plate electrization,some servo-motors replacing mechanism as actuator were installed in the gap of the plate cylinder.

在印版滚筒的空当安装伺服电机作为执行机构来代替机械部分的动作，以实现调整印版的电气化；通过光电头自动检测套印误差，并将误差信息反馈给伺服放大器，构成闭环控制系统。

Also the problems of stochastic controllability, observability and stability of the filter are studied, a simple observability criterion for the time-invariant systems is set up, error band of the filtering is given theoretically, and the filtering stability results are proved under more general conditions; besides, the filtering error caused by uncorrect mathematical models is analysed.

本文还研究了随机能控能观性及滤波的稳定性问题，建立了结构简单的平稳定常系统的能观性判据，在理论上给出了滤波算法的误差范围，在更一般的条件下证明了最优滤波算法的稳定性；并从理论上分析了模型误差对滤波产生的影响。

On basis of simulation results, the effect of instrument error coefficient deviation on the impact point deviation was analyzed, and the effect of the compensation approach was validated.

根据仿真结果，分析了各工具误差系数偏差对导弹落点精度的影响，证明了补偿算法的有效性，为捷联惯导系统工具误差补偿和提高弹道导弹制导精度提供理论依据。

The most important parameters for data acquisition systems design are initial error, OUTPUT voltage temperature coefficient, THERMAL hysteresis, noise, and long-term stability of the voltage reference DEVICE .

对数据采集系统设计最重要的参数是器件的初始误差、输出电压温度系数、热迟滞系数、输出电压噪声、长期稳定度。表1摘录了本应用笔记里的三种电压基准的主要误差源。

Moreover, the error source and the error which may arise of control system are analyzed.

此外，本文还对系统可能产生的误差源及误差进行了分析。

At last, a set of Chinese characters recognition system with reaction are constructed, based on and using the error estimation approach of Chinese characters outlines feature.

最后，给出了一种基于汉字图形轮廓特征的误差估计方法，并利用误差估计初步建立了一套带有反馈的汉字识别系统。

Because of the fatal differs between large-scale and mesoscale weather systems, such problems as relevant model of background error, representativeness of observation data and observation error structure still need to carry on deeper research.

鉴于中尺度和天气尺度天气系统之间的巨大差别，在中尺度资料三维变分同化时，背景误差相关模型的设置、观测误差结构和观测资料的代表性等方面还需要进行更加深入的研究。

Comparing with the observation results, the biggest average error of four observation well is 0.14 m in the simulation, the positive and negative error is relatively equal, and the stability of system is better, which means the simulation model accords with the reality of the studying region.

模拟结果与观测结果比较，4个观测孔的平均水位误差最大值为0.14m，正负误差比较均衡，系统稳定性较好，表明所构建的数学模型与研究区域实际情况吻合较好。

The estimating expression of theory error based on the hardware synchronous sampling measurement is advanced, and the system measuring error is analyzed.

提出了硬件同步采样算法的理论误差估计公式，并对系统测量误差进行了分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。