查询词典 accelerometer

In the past, the high frequency resonance technique is usually applied in the envelope detection for a vibration signal with amplitude modulation. When applying the Hilbert transform in the high frequency resonance technique for the envelope detection of vibration signals, the computing burden is very high. On the other hand, when applying the linear least squares analysis method, the computing burden is lower. When applying the envelope detection in the lowest vibration mode, an accelerometer with the low-pass filtering cutoff frequency at 4kHz should be choose.

在过去的研究方法中，振动讯号之振幅调变通常以高频解调分析法应用於包络讯号侦测，而高频解调方法应用希尔伯特转换的包络分析，所需要的计算量是非常的高，若以线性最小平方分析法应用於高频解调分析法中，则所需要的计算量较小，如果以最低模态来估测包络讯号时，可以适当的选取加速规来代替低通滤波器，而加速规的截止频带必须在4kHz左右。

Magnetic track technology is also researched in this thesis, and on this foundation, a high-accuracy, low-cost orientation track system has been developed, which is constituted of magnetic sensors and accelerometer.

本文还对磁跟踪技术进行了研究，并在此基础上，研制开发出一种基于磁传感器和加速度计，结构简单、低成本、高精度的姿态跟踪系统。

The differential capacitance accelerometer has the following advantages: it can be used for measure the acceleration of zero Hz; it can work under severe circumstances; it is small in size and light in weight; its sensitivity is high and its follow-up apparatus required are simple.

差容式加速度计具有可量测零赫的加速度值，能在惡劣环境下工作，体积小、重量轻、灵敏度高、后续仪器简单等特点，是一种用途广泛的新颖加速度计。

The high precision electrostatic accelerometer is one of the key payloads for Earth's gravitational satellite, and its sensitivity parameters directly determine non-conservative force measurement, and eventually influence the precision of Earth's gravitational field recovery, so that it needs to be calibrated in-orbit.

用于检测微弱信号的高精度惯性传感器，其设计过程中的一个重要环节是分析检验质量的引力场分布。

In this paper, firstly, the new combined error model of cumulative geoid height influenced by three error sources including the inter-satellite range-rate of K-band ranging system, orbital position of GPS receiver and non-conservative force of accelerometer from GRACE satellites is established using the semi-analytical method. Secondly, the dependability of error models is demonstrated based on matching relationship among the accuracy indexes of key payloads. Finally, the accuracy of global gravitational field up to degree and order 120 is effectively and rapidly estimated from GRACE Level 1B measured observation errors of the year 2006 publicized by the Jet Propulsion Laboratory in the USA, and the cumulative geoid height error is 18.368 cm at degree 120, which preferably accords with the Earth's gravitational field model EIGEN-GRACE02S provided by the GeoForschungsZentrum Potsdam in Germany.

首先基于半解析法建立了新的GRACE卫星K波段测量系统星间测速、GPS接收机轨道位置和加速度计非保守力误差联合影响累计大地水准面的误差模型；其次，基于各关键载荷精度指标的匹配关系，论证了误差模型的可靠性；最后，基于美国喷气动力实验室公布的2006年的GRACE Level 1B实测误差数据，有效和快速地估计了120阶全球重力场的精度，在120阶处累计大地水准面的精度为18.368 cm，其结果和德国地学研究中心公布的EIGEN-GRACE02S全球重力场模型符合较好。

This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering.

本论文从工程实际出发，围绕液浮摆式加速度计测试系统展开了研究。

The pendulous accelerometer design had much in common with the gyro design.

摆式加速度计的设计与陀螺设计有很多共同之处。

Based on the working principle of the pendulous accelerometer,this article firstly analyzes how the change of temperature influences the scale factor,and then,we set forth the compensation theory and method of the temperature coefficient of the scale factor.

本文根据悬丝支撑的摆式加速度计工作原理，分析了温度变化对标度因数的影响，同时给出了标度因数温度系数的补偿原理和方法，并通过试验进行了验证。

The result of optimization and analysis show: 1 across-axis sensitivity is smaller, less than 2% of the primary axis sensitivity; 2 the first mode is dominant at primary axis, which reduce intersectional coupling; 3 when damp ratio is between 0.3 and 0.7, accelerometer has better dynamic characteristic.

分析结果表明此种结构的具有：1横向灵敏度小，X、Z方向的横向灵敏度均不到敏感方向的2％；2在敏感方向上，一阶模态起主导作用，其它模态的影响较小，有利于减小交叉耦合的影响；3当阻尼比毛为0.3—0.7时，传感器具有较好的动态特性。

Along with the improvement of Q-factor from 10~3 to 10~6 in the future, the MEMS structure parameters would be optimized through experiments, this MOEMS accelerometer could achieve thousandfold intensity of detecting sensitivity.

文章最后对本文所涉及的研究工作进行了总结，并对未来的主要工作方向提出了展望。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。