Static
Measurement
Measurement
- The 'input' (x), or physical quantity being measured, does not change over time and is therefore said to be 'steady'
- The output (y) can generally be given as a factor (K) of the input, where K is the static sensitivity of the system:
y = Kx
Dynamic
Measurement
Measurement
- The 'input' (x) or physical quantity being measured, changes over time (t) and is therefore said to be 'unsteady'
- The output (y), as a function of time y(t) and can generally be given as a factor (K) of the input as function of time:
y(t) = Kx(t)
- Mathematically, if we let f(t) be the input to the system as a function of time and y(t) be the output, then the relationship between them is