查询词典 discrete

In order to make the analyzing results of virtual instrument more accurate, the spectrum correcting technology is studied. After analyzing three existing methods for phase difference correcting on discrete spectrum, it is recommended to correct the spectrum by the first phase difference correcting method.

为了使虚拟仪器频谱分析的结果更加准确，论文研究了目前应用广泛的频谱校正技术，并对三种相位差频谱校正技术进行了仿真实验和综合比较，提出了推荐采用的技术。

By means of the discrete frequency spectrum, the frequency spectrum leakage s of the conventional DFT and the DFT with a Hanning window are comparatively analyzed in this paper.

利用离散频谱详细对比分析了DFT的频谱泄漏和加汉宁窗DFT的频谱泄漏现象，讨论了用异步顺序采样值计算电量产生误差的原因，提出了利用异步顺序采样值精确计算电量的方法，实现了畸变电量的精确测量。

In the paper, the theory and methodology of amplitude correction method using average of several points in discrete spectrum, which is suitable for analyzing the dynamic signals of rotating machinery with small varying speed, is proposed and systematically studied.

系统而完整地提出了处理变速机械弱时变响应信号的离散频谱多点平均幅值修正法的理论和方法，严格证明了该方法能精确地计算出平稳信号和频率微弱波动信号的幅值，能近似地计算出幅值和频率均微弱波动的信号的平均幅值，并应用这套理论成功地解释了频率微弱波动信号的幅值谱表现出较严重的"功率泄露"效应的原

Measurement ; sinusoidal phase modulating interferometer ; spectrum leakage ; discrete Fourier transform ; measurement accuracy ; frequency changes

测量；正弦相位调制干涉仪；频谱泄漏；离散傅里叶变换；测量精度；频率变化

Based on Wavelet Packet Decomposition, Entropy Threshold Method has been put forward to reject the Discrete Spectrum Interference in on-line PD monitoring.

首次提出用于抑制局部放电在线监测中周期性窄带干扰的小波包变换熵阈值法。

The major contributions of this dissertation are as follows: 1 Discrete event state space system model.

根据离散事件动态系统的特点建立系统的离散事件状态空间模型。

Design of discrete systems with state observers via variable structure control.

带有状态观测器的离散变结构控制系统的设计。

We set up the dynamic model of 2-D state space discrete systems which are expressed by vectors.

第四章提出的定理5，提供了应用第三章检验定理的基础。

In this paper, considering problem of stock management as discrete time system, state equation and index of performence are given.

本文把库存管理问题看成一个离散系统问题。建立了系统的状态方程。给出了性能指标。

Sliding mode control for linear discrete system with input and state delays.

带有输入和状态时滞的线性离散系统的滑模控制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。