研究表明,这些方法有较大的非线性误差和干扰误差。
The investigation indicates the lager nonlinear-error and the disturbing errors of these methods.
高精度的图像处理技术是视觉测量中必不可少的环节,如果在这个步骤中引入较大的干扰误差,前面和后续的工作将失去意义。
Since image is collected by CCD of sensor, so image pretreatment and characteristic point's arithmetic have an effect on the whole component measurement precision.
其缺点是系统的建模误差或外部干扰将对故障诊断的结果产生重大的影响。
Its defect is the system modeling error or external disturbance to the results of the fault diagnosis will produce significant influence.
测量高电阻时两个最常见的误差来源是静电干扰和泄漏电流。
The two most common error sources when measuring high resistance are electrostatic interference and leakage current.
在系统调试阶段解决了一些现场遇到的实际问题,如数据采集的干扰问题,采集数据的误差消除问题。
Solved the practical problem that runs into in system debug stage, for example, the interference problem in data acquisition, the error eliminating in data acquisition.
对高阻的最好解释是干扰会引起明显误差的阻抗水平。
High impedance is best defined as the level at which interferences cause significant errors.
切换和测量具有高内阻的电压源会受各种误差的影响,包括偏移电流、寄生漏泄通路,以及静电干扰。
Switching and measuring voltage sources with high internal impedance are subject to a number of errors, including offset currents, stray leakage paths, and electrostatic interference.
通过对这三个信号内在的联系进行分析、处理和判断,降低外界干扰因素引起的误差,增加分析结果的可靠性。
The errors from outside interference are reduced and reliability of the analytic result is enforced by performing analysis, process and determination of the internal relations among the three signals.
GPS接收机的误差受多种因素影响,多径干扰便是其中一项。
The GPS error is influenced by a lot of factors, one of them is multipath effect.
但由于各种干扰力矩的作用,天线指向会产生误差。
Antenna direction will bring error due to action of interfere moment.
为了降低电压表的非欧姆接触所产生的误差,采用屏蔽和适当的接地措施来降低交流干扰。
To reduce error due to voltmeter non-ohmic contacts, use shielding and appropriate grounding to reduce ac pickup.
本文还建立了表面轮廓和分离表面轮廓测量干扰及仪器误差的数学模型。
The mathematical models of surface profile as well as dividing the instrument error and the measurement interference are established.
最后还提出了一种结合最小均方误差(MMSE)检测的连续干扰抵消(SIC)方案,其性能好于单一的SIC和MMSE检测器。
Finally, a successive interference cancellation (SIC) scheme is proposed combined with minimum mean square error (MMSE) detection. Its performance is superior to simple SIC or MMSE detector.
基于离线仿真实验装置在模拟随机干扰、信号延迟、模型误差等方面存在不足,设计了一种在线仿真实验装置。
Due to the deficiency of offline simulation device in simulating random disturbance, signal delay and module error, an online simulation device is designed.
根据博弈理论与最优控制理论,提出一种能够在具有不确定噪声干扰中最小化滤波误差的极小极大值鲁棒滤波器。
Based on the game theory and LQG optimal control theory, the mini-max robust filtering is presented, which can minimize the filtering errors under the disturbance of uncertain noises.
这类系统利用一个动态补偿器,保证了干扰作用下系统输出的稳态误差为零,且动态特性满足设计要求。
This system employs a dynamical compensator, which can ensures the steady-state output error under disturbances to be zero, satisfying the dynamic requirements.
提出了一种自适应模糊小波神经网络的滑模控制策略,保证系统的跟踪误差和对外界干扰的抑制被衰减到期望的程度。
An adaptive sliding mode control based on fuzzy wavelet network is proposed to guarantee the effects of the tracking error and external disturbances can be attenuated to a specific attenuation level.
受外部干扰和模型误差影响,异步电机无速度传感器矢量控制中的转速辨识结果往往不准确。
Traditional speed identification methods for sensorless vector control of induction motors are inaccurate due to external disturbances and model errors.
其中直接自适应模糊控制器还与PID控制器一起组成并行控制系统来抑制系统静态误差和动态干扰。
Adaptive fuzzy controller was combined with PID controller to compose parallel control system, which was aimed at reducing static error and suppressing dynamic disturbance of the whole system.
在测量系统方面,改进电路设计、减小外界干扰和误差以提高测量精度。
To improve the measurement precision, the circuit is amended and the disturbing signals and measurement errors are reduced.
对模糊逼近所带来的误差以及外部干扰项,采用控制补偿方法。
Furthermore, the error resulted from fuzzy approximation and the external disturbances are compensated so that the influence on the system is minimized.
该方法能处理不同的误差干扰,进行有效的数据预测,防止数据丢失及数据错误。
This method can deal with different errors and make an effective data prediction to avoid the data losing and errors.
证明了在存在噪声干扰及网络设计误差的情况下,网络训练过程具有指数收敛性和鲁棒平稳性。
The exponential convergence of the training process and its robust stability to the noise perturbances and the network design errors are also proved.
在海底光缆有源探测中,当被测海缆附近存在其他海缆时,会对探测定位产生干扰,从而造成探测误差。
In an active detection of optical submarine cable, the location on cable can be affected by the presence of other cable in the vicinity, resulting in detection error.
通过设计切换律,对于具有未知上界的干扰,保证跟踪误差一致渐近趋于零。
For all disturbances which the upper bounds are unknown, the tracking errors decrease uniformly asymptotically to zero by the designing of switching strategy.
理论分析和模拟实验结果表明,该测量装置能有效抑制干扰加速度造成的测量误差。
Theoretical analyses and simulated experiments show that this measurement control system can effectively control the errors caused by the disturbance-accelerated speed.
最后分析了干扰信号在存在误码、码元宽度误差以及载频误差情况下的干扰效果。
Lastly, the jamming effectiveness is emphatically analyzed in the presence of bit error, bit width error and carrier frequency error.
这些误差源包括热电动势、由射频干扰(RFI)经过整流而产生的偏置量以及电压表输入电路中的偏置量。
These sources include thermoelectric EMFs, offsets generated by rectification of RFI (radio frequency interference), and offsets in the voltmeter input circuit.
该算法通过对FFT算法做简单变换,减小了频谱泄漏误差,降低了谐波之间的相互干扰。
Through simple transforms of FFT algorithm, the amending algorithm can reduce satisfactorily the leakage error, and obtain accurate analysis results.
该算法通过对FFT算法做简单变换,减小了频谱泄漏误差,降低了谐波之间的相互干扰。
Through simple transforms of FFT algorithm, the amending algorithm can reduce satisfactorily the leakage error, and obtain accurate analysis results.
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