1) Multi-Integer-Period Sampling
多整周期采样
2) full period sampling
整周期采样
1.
This paper introduces a full period sampling method based on the resampling technology used in the sampling of rotor system vibration signals.
介绍了一种应用重采样技术的旋转机械振动信号的整周期采样方法。
2.
This paper presents realizing technique of digital frequency multiplying device,on the basis of introducing the meaning of rotating machinery vibration signal collection and technique of the full period sampling.
在介绍旋转机械振动信号采集的意义和整周期采样实现方法的基础上,提出了采用数字倍频器加以实现的技术。
3) complete period sampling
整周期采样
1.
Devices for rotating machinery status monitoring and fault diagnosis should have functions of real-time measuring the angular velocity of rotating machinery and complete period sampling of vibration signals.
旋转机械状态监测、故障诊断仪器应具有实时测量转速和对振动信号进行整周期采样的功能,旋转机械转速的连续变化又要求该类仪器的采样频率能够连续可调,这在硬件的实现上存在困难。
2.
During complete period sampling of vibration signals in rotating machinery, the existing method for computing the sampling frequency takes the rotor present turn s angular velocity as the next turn s.
旋转机械振动信号整周期采样时 ,计算采样脉冲输出频率的方法一般是把这一转的转速作为下一转的转速来计算 ,这样 ,当机组转子为匀变速或变速运动时整周期采样脉冲输出频率误差较大 。
4) Integer-Period Sampling
整周期采样
1.
The Non-Integer-Period Sampling Theory for Periodic Siqnals;
周期信号的非整周期采样理论
5) signals acquisition in a complete sampling period
整周期采样
1.
The implement of Machine vibration signals acquisition in a complete sampling period;
整周期采样在机械振动信号采集中的实现
6) Integral period sampling
整周期采样
1.
An Analytic estimative formula of FFT leakage error for non-integral period sampling is analyzed and derived and in the case of the input signal including fundamental wave and higher harmonics,a new calculating method of realizing the self-adaptive Integral period sampling with FFT iterative calculation is obtained.
分析推导了非整周期采样时FFT泄漏误差的解析估计公式,得出了在输入信号含基波和高次谐波分量的情况下,利用FFT迭代计算来实现自适应整周期采样的一种新算法。
2.
The necessity of integral period sampling is analyzed.
在分析了整周期采样必要性的基础上,提出了利用集成PLL电路实现整周期采样的方案,并针对磁力轴承系统的特点对电路参数进行了设计,同时对锁相环的锁相速度进行了改善。
3.
The integral period sampling, which is realized by realtime frequency calculation and voltage capture function of IC chip, is necessary for precise digital signal processing.
借助芯片的捕获功能,计算信号的实时频率,实现了整周期采样,保证了数字信号处理的精度。
补充资料:采样周期
分子式:
CAS号:
性质:在周期性测量过程变量(如温度、流量……)信号的系统中,相邻两次实测之间的时间间隔。离散控制系统(包括计算机数字控制系统)都采用周期性测量方式,采样间隔之内的变量值是不测量的。如采样周期过长,将引起有用信号的严重丢失,使系统品质变差。反之,如采样周期过短,则两次实测值的变化量太小,亦不相宜。采样周期的选择甚为重要,一般取为回复时间(即大体上达到稳态所需时间)的十分之一左右。
CAS号:
性质:在周期性测量过程变量(如温度、流量……)信号的系统中,相邻两次实测之间的时间间隔。离散控制系统(包括计算机数字控制系统)都采用周期性测量方式,采样间隔之内的变量值是不测量的。如采样周期过长,将引起有用信号的严重丢失,使系统品质变差。反之,如采样周期过短,则两次实测值的变化量太小,亦不相宜。采样周期的选择甚为重要,一般取为回复时间(即大体上达到稳态所需时间)的十分之一左右。
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