lemonergy· battery engineering courses

Lemonergy · Studio block

Filtered continuous derivative

Estimates a continuous derivative through a finite-bandwidth filter.

Implementation ID
native-filtered-derivative
Reviewed
2026-10-27

Behavior

H(s) = s/(τs + 1). The worked example connects this operation to signals in Lemonergy Studio.

Interface

Filtered continuous derivative interfaceInputs or arguments on the left, observed outputs on the right. Conserving terminals appear below the component. The tables give units and behavior.Filtered continuous derivativeStudio blockin0out0
Original Lemonergy interface view. Lines identify ports; they are not a completed simulation circuit.
Ports and observed outputs
NameDirectionUnitMeaning
in0input1Input; real scalar.
out0output1Derivative; real scalar.

Parameters

Defaults are initial model values. Select values for your own model and operating conditions.

Configuration fields
ParameterUnitDefaultMeaning and limits
Filter time
params[0]		s0.2Transfer s/(τ·s + 1); finite-bandwidth differentiator.
Initial filter state
tables[0]		1[0]Configured coefficients or initial values in column-major order.

Equations and rules

  • H(s) = s/(τs + 1)

Worked example

Filtered continuous derivative — worked example

Input = 1. Derivative at 1 s = 0.03368973499542734.

Open Studio example after release →
Numerical checks for the bundled synthetic example
OutputTime (s)Expected valueUnitAbsolute tolerance
Derivative
out0		10.0336897349954273412e-06

Explore the recorded outputs

Filtered continuous derivative recorded example

Filtered continuous derivative
Filtered continuous derivative against timeRecorded synthetic simulation values. Time in seconds; output in —.-0.363614301.0766150.252.5168450.53.9570750.755.3973051—Time (s)
Filtered continuous derivative: 5 — at 0 s

19 actual recorded samples. Lines are visual guides between samples. Synthetic example, not measured cell data.

Download the recorded samples (JSON) · Open this Studio example after release

Use in a workflow

Filtered continuous derivative — worked example

Estimates a continuous derivative through a finite-bandwidth filter.

  1. Filtered continuous derivative: H(s) = s/(τs + 1). The worked example connects this operation to signals in Lemonergy Studio.
    • Use the block reference for settings and connections.
    • Implementation tested locally; public release pending.
Open Studio example after release

Connected concepts

Limits and interpretation

  • Finite-bandwidth derivative s/(tau*s+1), tau>0. An ideal derivative of arbitrary input, accepted-step numerical derivative and discontinuity impulse semantics are not implemented.
  • Shapes and element types are explicit. Values must be finite; automatic reshaping and unit conversion are not performed.

Scientific and mathematical references

These sources explain the scientific and mathematical background. The behavior, interface and limits above define the Lemonergy implementation; a citation does not imply every model option in the source is implemented.

  1. Feedback Systems: An Introduction for Scientists and Engineers, second edition

    Karl J. Åström, Richard M. Murray · Princeton University Press; author-maintained FBSwiki · 2021

    Technical reference · State-space modeling, feedback and PID control. These mathematical foundations do not establish a particular software implementation.

Implementation sources

This reference follows the public interface and locally verified numerical checks for an upcoming release.

Contract: Lemonergy Studio public contract · Verification record: verification-2026-10-27

  • docs/glossary/native-block-verification.json

This implementation and its workflow uses (JSON) · Knowledge graph (JSON-LD)