측정값 및 통계량
바이스테이트 파형 측정값, 분산, 히스토그램, 자기상관
DSP System Toolbox™ 블록과 System object를 사용하여 MATLAB®과 Simulink®에서 신호의 이동 통계량과 정상 통계량을 측정할 수 있습니다. 이동 통계량은 시간에 따라 변하는 스트리밍 신호의 통계량을 나타냅니다. 이동 통계량을 계산하는 슬라이딩 윈도우 방법에서는 새로운 데이터가 입력될 때 지정된 길이의 윈도우가 한 샘플씩 데이터 위로 이동합니다. 객체와 블록은 이 윈도우 내의 데이터 통계량을 계산합니다. 지수 가중치 적용 방법은 데이터 샘플에 가중치 세트를 적용하고 가중치가 적용된 데이터를 처리합니다. 이러한 가중치는 데이터의 수명을 기준으로 재귀적으로 계산됩니다. 정상 통계량의 경우 블록과 객체는 일괄 처리에서 사용할 수 있는 모든 데이터의 통계량을 계산합니다.
객체
블록
도움말 항목
이동 통계량
- What Are Moving Statistics?
Learn how moving statistics are calculated. - Sliding Window Method and Exponential Weighting Method
Learn the differences between the sliding window method and exponential weighting method. - How Is a Moving Average Filter Different from an FIR Filter?
Moving average filter is a special case of the FIR filter. - Measure Statistics of Streaming Signals
Compute the moving average of streaming signals using MATLAB functions and System objects. - Compute Moving Average of Noisy Step Signal
Compare the sliding window averaging method and the exponentially weighted averaging method in Simulink using the Moving Average block. - Compute Moving RMS of Noisy Step Signal
Compute moving RMS using both the sliding window method and the exponential weighting method. - Compute Moving Standard Deviation of Noisy Square Wave Signal
Compare the sliding window standard deviation method and the exponentially weighted standard deviation method in Simulink using the Moving Standard Deviation block. - Compute Moving Variance of Noisy Square Wave Signal
Compare the sliding window variance method and the exponentially weighted variance method in Simulink using the Moving Variance block.
정상 통계량
- Compute the Mean
Simulink model example to compute the mean using the Mean block. - Compute Mean Using Sliding Window
Model a sliding window using the Buffer block. The Mean block use this window to compute the mean. - Compute the Running Mean
Simulink model example to compute the running mean using the Mean block. - Compute the Maximum
Simulink model example to compute the maximum using the Maximum block. - Compute the Running Maximum
Simulink model example to compute the running maximum using the Maximum block. - Compute the Minimum
Simulink model example to compute the minimum using the Minimum block. - Compute the Running Minimum
Simulink model example to compute the running minimum using the Minimum block. - Compute RMS of Noisy Step Signal
Use the RMS block to compute the RMS of a noisy square wave signal. - Compute the Histogram of Real and Complex Data
Simulink model example that explains how the histogram bin boundaries are calculated based on the input. - Compute the Standard Deviation
Use the Standard Deviation block to compute the standard deviation. - Compute the Running Standard Deviation
Use the Standard Deviation block to compute the running standard deviation. - Compute the Variance
Use the Variance block to compute the variance.
전력 측정값
- Compute Power Measurements of Voltage Signal in Simulink
Compute average power, peak power, and peak-to-average power ratio of voltage signal. - Compute CCDF Measurements of Voltage Signal in Simulink
Compute relative power and probability, and plot the CCDF curve in Array Plot.
응용 사례
- Remove High-Frequency Noise from Gyroscope Data
Remove high-frequency noise using a median filter. - Energy Detection in the Time Domain
Detect the event when the signal energy crosses a particular threshold value.
가변 크기 신호 지원
- Variable-Size Signal Support DSP System Objects
List of System objects that support variable-sized signals in DSP System Toolbox.