系统误差

On the basis of the above analysis, the single axis feedback control system suiting for the manipulator is designed.

在此基础上，构建了单轴误差反馈控制系统，并通过计算机仿真预估出定增益PID调节器的参数。

In this paper, systematic error is comprehensively extracted, furthermore, the particular technique which can assure the measurement precision is proposed.

文中对系统的误差进行了较为全面的分析，提出了保证测量精度的具体措施。

The spinning drop method was selected as the determination routine of liquid- liquid interfacial tension. A new spinning drop tensiometer was constructed for the first time in our country.

用一些小分子系统和PEG4000／DEX40000双水相系统的界面张力文献值对仪器作了标定，结果表明仪器有较高的准确度，误差约为3％。

In this paper, the principle and hardware of test system are designed and the step motor's control software is designed at the same time. The assessing methods of linearity errors are analyzed and the test methods of linearity, diameter and roughness are provided and the corresponding softwares are programmed with VB. At last, the test method of roughness without touch-light scattering is proposed.

论文对检测系统的原理及硬件电路进行了设计，同时对步进电机的控制软件进行了详细的设计；对直线度误差的评定方法进行了分析，分别给出了炮膛内径的直线度、直径及阴阳膛表面粗糙度的测量方法，并用VB 编写了相应的控制软件，最后提出了一种炮膛粗糙度非接触测量法—光散射法。

The projects of the IGP are devided in 4 parts: Geodesy and Geodynamics, Geographic Information Systems, Theory of Errors, Photogrammetry and Remote Sensing and Geodetic Metrology.

测地学和摄影测量学协会的项目被分成四个部分：测地学和地球动力学，地理信息系统，误差论，摄影测量学和遥感及短程计量学。

The analysis results showed that the strapdown approach will be faced to more error sources with sensor noise and motion disturbance. The simulation results verified this and indicated that the performance of the strapdown approach would not be as efficient as that of the direct approach.3. Analyzing the principle and error model of MEMS QRS gyro for the purpose of practical applications, the paper presented an autoregressive model for the gyro signal by means of time series theory.

应用牛顿力学原理分析了光电稳定跟踪机构的惯量耦合关系和动力学模型，推导了平台单轴伺服回路的控制方程，比较了直接稳定和捷联稳定方案在测量噪声和外部扰动共同作用下的性能特点，仿真结果表明，在同等噪声和扰动条件下，捷联稳定面临更多的误差源，因而最终的稳定精度较难达到直接稳定系统的水平。3。

To minimize errors due to temperature variations, operate the entire system in a thermally stable environment.

为了尽量减小温度变化引起的误差，应当使整个系统在温度稳定的环境中工作。

A numerical method is used to obtain the solutions of the mathematical model of the human thermoregulation system,and human temperature distribution and dynamic change during simultaneous exposure to heat and vibration are calculated.

采用数值方法对人体热调节系统数学模型进行求解，计算了不同热和振动复合环境条件下人体温度分布及动态响应，计算结果与实验结果相符较好，相对误差小于5％。

So whether can diminish or reduce these errors is the key of the successful application of math platform in the titling train.

消除和削弱该项误差的影响是"数学平台"检测系统在摆式列车中成功应用的关键。

A torsional oscillation observer based on the general observer was discussed to estimate the speed of the turbine generator. The dynamic characteristics of standard Luenberger observer with quantization effects were studied by Lyapunov stability criterion. It is concluded that the state estimate error can not asymptotically converge to zero in-the-large in presence of quantization effects.

讨论了基于状态观测器的汽轮机轴系扭振测量方法，采用李亚普诺夫稳定性判据分析存在量化效应的条件下标准龙贝格观测器的动态特性，指出由于数字系统中的有限字长效应会使观测器的跟踪性能恶化，估计误差不能在大范围内渐进收敛。

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。