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differentiate-svf

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differentiate-svf

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Library

Signal\Block Diagram

Use

Domains: Continuous. Size: 1-D. Kind: Block Diagrams.

Description

This model approximates the differentiation of an input with a state variable filter:

DifferentiateSVF

As can be seen, no differentiation is used in this model and consequently all integration algorithms can be used. In the S-domain the output of this model is equal to:

DifferentiateSVFequation

For very high values of N, the output becomes the pure derivative of the input. High values of N, however, increase simulations times. A good trade-off is a starting value of 10. If more accuracy is needed, this value can be increased.

Interface

Inputs

Description

input

 

Outputs

 

output

 

Parameters

 

N

initial

Derivative Gain Limitation.

The initial value of the output.