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reference position
相关语句
  参考位置
     The fuzzy neural networks learn about the reference position so that the prior knowledge of the environment stiffness and location is not required.
     利用模糊神经网络学习参考位置,不需要环境位置和刚度的先验知识。
短句来源
     The purpose is minimizing the actual position s\and reference position.
     使实际位置和参考位置的误差最小化。
短句来源
     A position-based impendence control structure using fuzzy neural networks is proposed in this paper. It modifies the reference position according to the force error so that contact force between the manipulator and the environment can track the reference force.
     提出一种以位置控制为基础的模糊神经网络阻抗控制结构,它根据力误差修正参考位置,使机器人与环境的实际接触力跟踪期望力。
短句来源
     Using 6 DOFs force/torque sensor,the cartesian position based impedance control of single finger is implemented. According to the force/torque sensing information of the fingertip sensor,reference position will be modified in term of aim impedance model,and the inner position controller is used to control the finger to follow anticipant track.
     应用指尖六维力矩传感器,实现了单手指的基于位置的笛卡尔阻抗控制,根据指尖力/力矩传感器提供的力信息,按照目标阻抗模型修正手指的参考位置,利用内环的位置控制器使手指跟踪期望轨迹.
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  “reference position”译为未确定词的双语例句
     Determining the reference position of the fine tuning stewart platform for large spherical radio telescope
     大射电望远镜馈源系统精调平台位置基准的确定
     The Reference Position and Distribution of Generic in Chinese
     现代汉语通指的指称地位和分布位置
短句来源
     Numerical-controlled Lath Reference Position and Faults Diagnosis
     数控机床回参考点及其故障诊断
短句来源
     Chapter three discusses about the metaphor of reference position concept.
     第三章为参照位置概念的隐喻。
短句来源
     The experiment results show that the proposed controller provides good performance in case of disturbance rejection and parameter mismatch and the position signal tracked the reference position quickly and smoothly.
     试验结果表明了该方法设计的控制器抗干扰能力强、控制输出跟随快速平稳,有良好应用及参考价值。
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  相似匹配句对
     The Position
     立场
短句来源
     With reference to B.F.
     本文参考 B.F.
短句来源
     REFERENCE
     每月参考
短句来源
     The Reference Position and Distribution of Generic in Chinese
     现代汉语通指的指称地位和分布位置
短句来源
     Comparison and reference of the office position classification
     公务员职位分类制度的比较与借鉴
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  reference position
In this paper, the gradient is determined in the center of four neighboring meshes using a polynomial approximation of the displacement function in a reference position.
      
Despite the deliberately large deviations from the reference position, the changes in TRP and TIS are generally within ±0.5 dB with a maximum of about 1.4 dB.
      
Radiation patterns of six handsets have been measured while they were mounted at various offsets from the reference position defined by the Cellular Telecommunications >amp;amp; Internet Association (CTIA) certification.
      
The difficulty in such a case is that both the query and the data objects change positions continuously, and therefore we can not rely on a given fixed reference position to determine the answer.
      
A desirable feature in spatio-temporal databases is the ability to answer future queries, based on the current data characteristics (reference position and velocity vector).
      
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During his visit to Beijing, G. R. Burbidge reaffirmed their view point: the statistical distribution of observed number of QSOs versus it's redshift (figure of N-Z) has three peaks nearly at Z≈0.5, 1.5, 2.0 (ef. Fig. 1). Though their statistical analysis based directly on the observation is model-independence, it has no apparent physical meaning. In order to give physical meaning to the relevant quantities, it is necessary to have recourse to cosmological model. Basing on Friedman's model, we have done the...

During his visit to Beijing, G. R. Burbidge reaffirmed their view point: the statistical distribution of observed number of QSOs versus it's redshift (figure of N-Z) has three peaks nearly at Z≈0.5, 1.5, 2.0 (ef. Fig. 1). Though their statistical analysis based directly on the observation is model-independence, it has no apparent physical meaning. In order to give physical meaning to the relevant quantities, it is necessary to have recourse to cosmological model. Basing on Friedman's model, we have done the statistical analysis of 1467 QSOs collected in Burbidge's catalog, then obtained the luminosity evolutionary law of QSOs and the statistical distribution of its number versus the luminosity distance.In Friedman's model, the redshift is naturally related to the luminosity distance:Here H0 is Hubble 's constant, and q0 the deacceleration parameter. Considering that it is recently discoved that the neutrino has rest mass, we only take account of two typical quantities of q0: i.e. q0= + 1 (closed universe) and q0 = 1/2 (flat universe).The vertical axis N in Fig. 1 represents the observed number of QSOs (apparent magnitude m≤21). In order to obtain the distribution of actual number (relative ratio), we must do some reasonable correction. According to the relation between apparent magnitude and luminosity distance :m = M + 5 log dL ?5. (2)we know that the more distant the QSOs are, the less the observed number of QSOs is Therefore, we ought to do number counting after removing all of QSOs at the same distant. Because there are a few of QSOs with largest redshift (Z≈3.5) in Burbidge's catalog, the reference position is chosen at Z=3.0. The apparent magnitude of QSOs after removing them to the position corresponding to Z= 3.0 is called "reduced magnitude" m'. From Bq. (2), we haveSince there is only one of QSOs which m' > 21 in the catalog, we choose the visual limit as 21. If m' < 21, it is counted ; if m' > 21, it is not counted.In addition, we must take acount of luminosity evolution. We must analyse statistically the luminosity distribution of QSOs at different intervals of Z. At first, we count the number of QSOs within the intervals Am = 0.5 and AZ = 0.05. Then, we draw the figures of normalized number counting versus apparent magnitude (cf. Fig. 2). The result reveals that all of Figs. N/Nmax--m at different Z are appeared to have the same shape (normal distribution), especially appear a common peak at m≈1819 (except for Z < 0.3). This suggests that the luminosity evolution of QSOs just compensates the decrease of it's luminosity with distance, so that the apparent magnitude of QSOs at different distance appear the same distribution.Hence, if we take m in Eq. (3) as correspondent constant, and substitute Eq. (1) into Eq. (3), we would obtained the relation between the reduced magnitude of QSOs and redshift Z. For the QSOs at peak, this relation is more accurate, and is written as following:(i) for q0= 1,m = 5 log 3/Z + 18 (4a)(ii) for q0= 1/2, In Friedman's model, it is easily to derive the relations between cosmological time t and redshift Z as following:(i) for q0 = 1,(ii) for q0 = 1/2,Combining the Bqs. (4a, b) and (5a, b), we ultimately obtained the evolutionary law of reduced magnitude of QSOs at peak. For the case of q0 = 1/2, we haveThe curves shown in Fig. 3 represent the theoretical formula above obtained, in which the vertical line segments represent the observed peaks of reduced magnitude of QSOs at different, Z (the interval is chosen as 0.05). The corresponding t are marked in the horizontal axis. (II0 is chosen as 100 km/see kpe.) It is apparent that the observed data is well fit. to the theoretical curves.Because the luminosity evolution of QSOs just compensates the decrease of its luminosity with distance, the observed number of QSOs is also its actual number (relative ratio). The intended correction mentioned at begining is not necessary. Therefore, it is concluded that the Fig. 1 given by Burbidge also represents the actual number distribution of QSOs versus its luminosity distance, provided that

本文以Burbidge最近编纂的类星体表为基础,对1467个类星体作了统计分析,得到了光度演化规律:类星体的光度演化恰好补偿了随距离衰减的效应。采用弗里德曼宇宙模型,进而得出了类星体的折合星等随时间t的演化公式。并且据此论证了Burbidge指出的N-Z图中存在的三个高峰确实表示了类星体空间分布的不均匀性。

Cant and erosslevel are two basic items for the track measurement. This cant measuring device which is successfully developed in our country, comprises a single axis vertical platform established by a floated rate-lntegrating gyroof single degree of freedom and a floated pendulous accelerometer, so that it will keeping in a true vertical reference position in the car-body. The rate gyro is to be used to obtain the angular velocity of turning and the travelling speed is obtained from the taehogenerator....

Cant and erosslevel are two basic items for the track measurement. This cant measuring device which is successfully developed in our country, comprises a single axis vertical platform established by a floated rate-lntegrating gyroof single degree of freedom and a floated pendulous accelerometer, so that it will keeping in a true vertical reference position in the car-body. The rate gyro is to be used to obtain the angular velocity of turning and the travelling speed is obtained from the taehogenerator. Through an analog multiplier signals for compensation of invariance it gives to the platform so that the effects of centrifugal acceleration is overcome. This paper is intended to describe in detail the measurement technology of the device, the design and analysis of the servo-loop, the horizontal control loop and the compensation of invariance for centrifugal acceleration, the cant calculation and demodulation, as well as the measurement and analysis on the actual tracks.

轨道超高测量是我国轨道检测中的一个基本项目。由于列车运行中车辆的晃动和曲线上离心加速度的影响,以往我国还未有专门的、可靠的超高测量装置。 我国新研究成功的轨道超高测量装置,采用先进的单轴垂直平台系统及利用速率陀螺对平台进行不变性补偿的原理,成功地克服了离心加速度的影响,使在通过曲线时运行中的盘旋误差基本上得到消除,从而能在车厢内建立当地真垂线基准,准确测量出运行状态下轨道的横向水平和超高。 本文较详细地论述了测量装置的组成、伺服回路的设计与分析、调平回路与离心加速度的不变性补偿、超高的计算与调整等。 最后根据经过六万余公里的运行试验和专门的测试校对,分析了本装置在实际应用中的可靠性和精确性。

The control system design for a parallel inverted pendulum on an inclined rail has been successfully implemented. The control law includes the integration term which not only eliminates the constant disturbance due to the inclined rail but also assures the cart of following the given reference position. Theoretical analysis of the pendulum system and the control results are given.

本文介绍了一个小车放在倾斜轨道上的平行倒立摆数字控制系统。控制器的设计是以线性伺服控制理论为基础的,它不仅能够消除由于轨道倾斜所带来的扰动,也能使系统跟踪其设定信号,使小车稳定在参考位置上。文章中给出了平行摆系统的理论分析和实际控制结果。

 
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