精度

With the demand of quick respond and precision for missile flight in terminal guidance, an adaptive nonlinear controller is designed that guarantees tracking performance when the uncertain parameters vary within stability bound. In order to achieve asymptotic tracking, adaptation is introduced to enhance closed-loop robustness, while mach number and mass changes with 35%.

文中根据导弹响应快和精度高的基本要求，在导弹变向跟踪接近目标时，对导弹制导控制过程中的控制方法进行研究和数学推导，提出了一种导弹末制导的自适应控制方法，该方法提高了导弹马赫数和质量在较大范围（35%）内变化时系统的响应精度和稳定性。

Based on this, the asymptotic stability algorithm of fuzzy control having simple and effective control laws is employed.

在此基础上给出了广义T-S模糊模型使系统渐近稳定模糊控制算法，并证明了广义T-S模型有足够的精度，控制的精度就能得到满足，系统可以跟踪目标。

The precision of photoelectric Autocollimator in our country is low, so the research of how to improve its precision is necessary.

国内光电自准直仪的精度较低，提高光电自准直仪精度的研究势在必行。

Experimental results show that the proposed method is fast,stable and accurate,and the measuring accuracy of the modified CCD laser autocollimator is improved from 2 arcsec to ±0.25 arcsec in 0.23 s using the proposed method.

光电自准直仪中典型的激光CCD自准直仪因其较高的测量精度和稳定性得到了广泛的应用[6~10]，但其常用的定位方法，如重心定位法[7]、矩心内插法[8]等，均存在定位精度低、重复性差且计算速度慢的缺点。

In order to improve the measuring accuracy and efficiency, a high accuracy inspecting system for measuring the centroid and centroidal deviation of bullets based on three point method is designed. The working principle, relevant calculation formulae and the measuring equipment for measuring the centroid and centroidal deviation of bullets are presented, and the main factors affecting measuring precision are discussed. Then, a multiple measuring platform with automatic leveling and column structure autorotation of 90° is put forward.

为了提高其测量精度和效率，设计了基于三点法的高精度弹丸质偏心测量系统，介绍了测量原理、计算公式和测量设备，分析了测量误差产生的因素，提出了一种多测试平台和自动调平以及弹体自动旋转90°的设计思想。

The average velocity obtained by SAC method and frequency wave-number method is almost the same.

方法精度与目前国际同类研究——表面波谱分析方法的精度基本相当。

The most cost of distribute fiber temperature-measured system are signal collecting, data processing and background software programming.

它的检测精度和速度决定了整个系统的测量精度，空间分辨率，采集速度以及最后的请求响应时间。

Due to the particularity of tank barbette system, the particular SOGFCMAC online learning control method for tank barbette horizontal stabilizing system was presented, and then used into the compensation of the unbalanced torque in tank barbette system. The computer simulation results show that it can effectively eliminate the influences produced by the unbalanced torque, and can improve the stable accuracy and the stable tracking accuracy of the tank barbette.

针对坦克炮塔控制系统的特殊性，提出了坦克炮塔水平向稳定器的SOGFCMAC在线学习控制方法，并将之应用于坦克炮塔偏心力矩的补偿中，计算机仿真结果表明该方法能够有效消除偏心力矩造成的影响，提高坦克炮塔的稳定精度与稳定跟踪精度。

Not only the displacement but also velocity and acceleration have higher accurate in barycentric Lagrange interpolation collocation method.

重心Lagrange插值配点法不但对位移具有极高的计算精度，而且对于速度和加速度也就有极高的计算精度。

In this dissertation, GPS baseline solution precision is analyzed since the following aspects: 1, Different length baselines are processed and analyzed by single frequency model and ionosphere free model. 2, Basing on current single point positioning precision, certain coordinate error is added into fixed points to study the result. 3, Baseline is processed and analyzed with different observation vectors and their lineal combination models. 4, 24 hours observation was divide up to process baseline.

本文从以下几个角度研究了影响GPS基线解算精度的因素：1、采用单频和消电离层模式对不同长度的基线分别解算，对处理结果进行分析。2、根据目前单点定位精度给起始点加上适当的坐标偏差，研究起始点坐标偏差对基线处理结果的影响。3、选用不同的观测值及其线性组合，对基线解算结果进行研究。4、对24小时观测的数据分时段处理，分析观测时间段对基线处理结果的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。