Log
It realizes : y(i)=log(u(i))/log(a).
Library
MathOperations
Description
The Log block computes the logarithm of the elements of the input vector.
The Basis is defined by the user, the default block parameters results in evaluatuing the natural logarithm.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
base | Basis (>1) | Basis of the logarithm. Real value greater than 1, defaults to Exp(1). | Scalar | |
externalActivation | External activation | This parameter defines if the block receives an external activation or inherits. When External Activation is used, a additional activation port is added to the block. default is OFF. | Number | 0 |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
Port 1 | explicit | output | 1 | |
Port 2 | explicit | input | 1 | |
Port 3 | activation | input | externalActivation |
Advanced Properties
| Name | Value | Description |
|---|---|---|
always active | no | |
direct-feedthrough | yes | |
zero-crossing | no | |
mode | no | |
continuous-time state | no | |
discrete-time state | no |