- •Definition/
- •Example with cars crossing the bridge – average number during 5 minutes (example
- •Equivalent representation with the help of input
- •Equivalent representation with the help of input
- •Do not forget about the periodic properties in both spaces!
- •Original part: Ideal filtering formula -IFF
- •Example: How to transform directly the rectangle function to Dirichlet function?
- •Transformation of the part of the harmonic signal (red) to Dirichlet function (blue
- •You can realize these transformations with the help of the IFF. Any “pattern”
- •How to realize it with the help of the IFF?
- •The input and output (Pattern) functions can be obtained initially by different methods
- •Example:
- •The properties of the L-transform:
- •Idea in general case is clear. It is necessary to decompose the transfer
- •Illustration the concept of stability
- •The general idea – decomposition of the transfer function on a set of
- •Integration of original and L-image
- •Retardation theorem
- •Periodic rectangle signal
- •Multiplication/convolution theorem
- •Decomposition theorems
- •Frenel’s integrals
- •The unit (impulse) functions and their properties
- •Generalization
- •Laboratory work –p.2.
The input and output (Pattern) functions can be obtained initially by different methods including the algebraic transformations.
Smoothing of Data
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Example:
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The properties of the L-transform:
Linearity property
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Idea in general case is clear. It is necessary to decompose the transfer function on to simple fractions. Let us demonstrate this idea for the denominator presented by
the polynomial of the second order
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Illustration the concept of stability
In order to demonstrate the general case we need to add some additional properties of the L-transform
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The general idea – decomposition of the transfer function on a set of a simple fractions
Stability and instability solutions!?
Other roots? – degenerated, repeated roots? For this aim it is necessary to recall other properties of Laplace transform
Differentiation of the L-image
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Integration of original and L-image
Couple of examples
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Retardation theorem
Example – combination of the step-functions
Find the plot of this function! |
L-image of this function |
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Periodic rectangle signal
For periodic triangle signal we obtain
Translation theorem
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Multiplication/convolution theorem
Duhamel integral
The generalized multiplication theorem (Efros theorem) |
The prove |
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