Static characteristics are linearity, measurement range and scope, hysteresis and repeatability, sensitivity, resolving power and threshold, stability, drift and static error.
Signal and system have a very close relationship, in order to truly transmit the signal, the system must have some of the necessary characteristics, usually described by static and dynamic characteristics. Static characteristics of the system is reflected when the signal is a fixed value or slow change, the relationship between the system's output and input, it can be described by a corresponding algebraic equation. Static characteristics in the process control system is defined as the relationship between the controlled parameters of the control process and the control variables at steady state.
Expanded Information
1, linearity
Linearity (linearity is also known as the "nonlinear error"), the smaller the value, indicating that the better the linear characteristics.
2, resolving power
Measuring devices and standards of measurement resolution, scale limits, or the smallest detectable unit. It is an inherent property of gauge design and is often presented in units of measurement or classification. The number of categories of data is often referred to as the resolution ratio because it describes the number of categories into which the observed process variation can be reliably separated.
3. Thresholding
Categorization
PS Thresholding, thresholding in PS, is actually a black and white cut-off value based on the brightness of the image, the default value is 50% neutral gray, or 128, brightness above 128 (<50% gray) will become white, below 128 (>50% gray) will become black (can be used with other in the filter) --High Contrast Retention, then Thresholding will work better).
AE threshold, the threshold can be understood as the value domain, that is, the range of values of the dependent variable, in after effects, such as the layer of the transparency map threshold 0-100. when the input signal is lower than the threshold, the gain will be amplified or reduced by a certain percentage of compression.
Absolute threshold, the stimulus only reaches a certain intensity to cause human feeling. This just can cause the feeling of the smallest amount of stimulus, called absolute sensory threshold (absolute sensory threshold).
4, static error
Error amplitude and direction is constant, or according to a certain law of slow change (change period is greater than the device adjustment cycle), that is, do not need to consider the time factor on the impact of error.
5, drift error
Analytical test instruments due to power supply voltage instability, aging electronics components, photomultiplier tube dark current, ambient temperature changes, indoor air harassment, indoor air humidity, instrument grounding ground is not secure, around the room there are high-power equipment starting or stopping the operation of various reasons, resulting in analytical instruments, the analytical instrument value is not stable, the analytical results caused by deviation from the theoretical and practical data. The deviation of the actual data.
Baidu Encyclopedia - Linearity
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Baidu Encyclopedia - Static Error
Baidu Encyclopedia - Drift Error
Baidu Encyclopedia - Static Characteristics
Baidu Encyclopedia - Static Characteristics
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