综合采用了初始搜索中心预测、菱形搜索算法和逐步采样偏差比较等技术。
A series of skills, such as initial search center prediction, the diamond search algorithm and successively sampled distortion measure, are also adopted in this algorithm.
除了采样误差，在调查中提问的措辞和一些实际困难也会导致在采集数据中产生误差或偏差。
In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of survey data.
定时器最小定时引起的同步偏差已有众多学者研究，信号周期飘移下的同步采样则较少有人涉足。
Synchronous deviation caused by limitation of the timer has already been studied by numerous scholars, however, Synch-sampling in the instance of signal cycle instability has been less discussed.
在理想同步采样的条件下，提出了一种基于简谐信号复幅度的频率偏差求取算法。
Based on the complex magnitude of harmonic signals and under the condition of ideal synchronous samplings, an algorithm for computing the frequency deviation is proposed.
该方法将实际输出电压和期望输出电压的比较偏差作为负反馈加到下一个采样周期的开关调制函数矩阵中。
The discrepancy between the actual output voltage and expected output voltage of the matrix converter is calculated and added to the switch modulation matrix in the next sampling period as feedback.
频率跟踪就是依据前一次频率估计修改下一次采样的采样间隔，从而使同步偏差越来越小。
Frequency tracking means that sampling intervals of following sampling is updated according to new frequency estimation, so synchronous sampling error will be reduce step by step.
针对PGC解调中混频信号与实际调制信号的频率偏差，在DSP系统实现中采用一路A/D转换器对调制信号进行同步采样，从而克服了频率偏差对解调结果的影响。
To overcome the frequency offset between the mixing signal and modulating signal in PGC demodulation, an additional (A/D) channel in DSP system is used to sample the modulating signal.
方法的精密度优于区域采样法，相对标准偏差小于3%。
The precision of this method is better than the zone sampling method. The relative standard deviation (RSD) is less than 3 %.
理论分析和仿真表明这种方法具有较强的抗干扰性，其频率测量精度主要与信噪比、频率偏差及采样数据的长度有关。
In this paper, a phase difference correction method is presented to correct the power frequency. This method has strong anti-disturbance capability by theoretical analysis and simulation.
理论分析和仿真表明这种方法具有较强的抗干扰性，其频率测量精度主要与信噪比、频率偏差及采样数据的长度有关。
In this paper, a phase difference correction method is presented to correct the power frequency. This method has strong anti-disturbance capability by theoretical analysis and simulation.
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