DERIV - Derivative (original) (raw)

Scilab 5.3.3

• Scilab help
• Xcos
• palettes
• Continuous time systems palette
• Continuous_pal
• CLINDUMMY_f
• CLR
• CLSS
• DERIV
• INTEGRAL_f
• INTEGRAL_m
• PID
• TCLSS
• TIME_DELAY
• VARIABLE_DELAY

Please note that the recommended version of Scilab is 2026.0.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Xcos > palettes > Continuous time systems palette > DERIV

Block Screenshot

Contents

• Derivative
• • Palette
  • Description
  • Default properties
  • DERIVATIVE Example
  • Interfacing function
  • Computational function
  • Authors

Description

The Derivative block approximates the instantaneous derivative of its input with respect to time t.

It is a measure of how a output changes as its input changes Δu. The derivative is given by:

The derivative block has no setting and the initial output for the block is zero.

Default properties

• always active: no
• direct-feedthrough: yes
• zero-crossing: no
• mode: no
• regular inputs:
  - port 1 : size [-1,1] / type 1
• regular outputs:
  - port 1 : size [-1,1] / type 1
• number/sizes of activation inputs: 0
• number/sizes of activation outputs: 0
• continuous-time state: no
• discrete-time state: no
• object discrete-time state: no
• name of computational function: deriv

DERIVATIVE Example

In this example, we compute and display the derivative waveform of a sinusoidal input signal, with amplitude 2 and frequency 1.25 Hz.

The input and output waveforms of the DERIVATIVE block are shown below:

Interfacing function

• SCI/modules/scicos_blocks/macros/Linear/DERIV.sci

Computational function

• SCI/modules/scicos_blocks/src/c/deriv.c (Type 4)

Authors

Ramine Nikoukhah - INRIA

Zhour MADINI-ZOUINE - DIGITEO