查询词典 tracking

The static analysis results show that the intensity and rigid requirements of tracking turntable frame were satisfied. The mode analysis indicated that the precision opto-electronic tracking turntable frame had good dynamic characteristics, and syntony did not occur.

静力分析结果表明，该转台框架满足强度和刚度的要求，能保证转台的精度；同时，其模态分析表明，该转台具有很好的动态特性，不会发生共振。

The main content of this dissertation includes: 1. Research on the theory of ultrasonic power supply, introduce its development process. On the basis of these, fix on the scheme of medical ultrasonic low-power supply. 2. According to the principle of modularized design, divide medical ultrasonic low-power supply into four parts. They are power amplify circuit, power control circuit, frequency automatic tracking circuit and matching circuit. Separately research on their theories and design their circuits and necessary programs, especially, effectively resolve the problem tracking the supersonic vibration system with a narrow syntony frequency bandwidth and a high swing. 3. The matching experiments gain good result, and prove that medical ultrasonic low-power supply is entirely up to the mustard on intellectualization, wide band of working frequency, steady output and high efficiency.

本文工作的主要内容包括： 1、研究了超声功率电源的原理，并回顾了它的发展过程，在此基础之上确定本文医用小功率超声电源的设计方案； 2、按照模块化的设计原则，将医用小功率超声电源的设计分解为功率放大电路、功率控制电路、频率自动跟踪电路和匹配电路等四个部分，分别研究了各部分的原理，在此基础之上进行了具体的电路设计和程序设计，尤其是有效地解决了对谐振频率带宽窄振幅高的超声振动系统的频率跟踪问题； 3、通过与超声振动系统的各项配合实验，取得了很好的实验结果，验证了医用小功率超声电源完全满足智能化、工作频带宽、输出功率稳定、输出效率高的设计要求。

According to the tracking method of the video frequency moving object target self-adapting window, tracking reliability is greatly increased, which is widely applied in the fields of robot technology, vision navigation, automatic supervision, traffic control and the like.

这种运动目标自适应窗口的跟踪方法，可使跟踪的可靠性大大提高，并可广泛应用于机器人技术、视觉导航、自动监视、交通管理等诸多领域。

Now,"soft tracking" method is widely used."Soft tracking" can cause great accumulative errors through accumulating dis- placement of glass plate front edge per period of Programming Language Con- troller, when they are conveyed in the long distance.

目前采用的"软跟踪"方法通过累计每一个可编程逻辑控制器设定周期内玻璃板位移增量来跟踪玻璃板前沿的位置，在远距离输送时会带来较大的累计误差，在传动特性不稳定时，存在较大的随机误差。

To solve the nonlinear problem in the Bearings-Only Tracking, an Unscented Particle Filter tracking method is proposed.

摘要为处理纯方位跟踪中的非线性问题，提出了一种Unscented粒子滤波跟踪方法。

With the objective of the robot′s steady movement, the trajectory is sampled equably and each segment is considered as uniformly variable motion. To guarantee tracking precision, the relation between the tracking control error and the output torque of the controller is analyzed from the point of engineering.

而按照通常的规划算法所规划出的"最优"参考轨迹在实际中却难以应用，因为这一参考轨迹是基于机器人的精确动力学模型得到的，没有考虑实际系统中存在的模型不确定性，也未考虑控制器的动态特性，因而跟踪精度得不到保证。

The most commonly used tracking method is air waybill tracking.

最常用的追踪方法，就是空运提单追踪。

In case of simple background, we use image difference for motion region detection, and then adopt the original Chan-Vese model for face contour detection and tracking, while in case of complex background, we use Wronskian change detector for motion region detection, and then adopt the modified Chan-Vese model for face contour detection and tracking.

对于简单背景情况，首先利用图像差分进行运动区域检测，然后在运动区域内采用Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓；对于背景复杂的情况，则用朗斯基变化检测算子来首先检测出运动区域，然后在运动区域内采用改进的Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓。

Zero phase error tracking control method can improve the tracking performance of servo system, but there still exists problems such as weak robustness and gain error.

零相差跟踪控制方法可以提高伺服系统跟踪性能，但仍存在鲁棒性不强和增益误差的间题。

The control methods in existence can not suffice for the needs of tracking precision bit by bit. How to improve the tracking precision has come to be the disquisitive highlight recently.

现有的控制方法已渐渐不能满足控制精度的要求，如何提高伺服系统的跟踪精度成为近年来研究的热点。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。